This presentation shows the basic application of gis in indian railways. Only brief description is given, Rest of the information can be found on the internet.
The document provides an overview of GPS (Global Positioning System) including:
- GPS uses 24 satellites and their ground stations as reference points to calculate positions accurate to within meters.
- It works globally in all weather and allows users to determine their location, velocity, and time.
- GPS was originally developed by the US Department of Defense but is now widely used by civilians as well as the military.
The document discusses various methods of georeferencing, which is assigning accurate locations to spatial information. The most comprehensive method is using latitude and longitude, which defines locations based on angles from the equator and Greenwich Meridian. However, the Earth's curved surface poses issues for technologies that work with flat maps and data. Therefore, map projections are used to translate locations on the spherical Earth onto flat planes or surfaces, though all projections introduce some distortion. Common projections include cylindrical, conic, and the Universal Transverse Mercator system.
A GIS has five key components: hardware, software, data, people, and methods. Hardware is the computer system that runs GIS software. GIS software provides tools to store, analyze, and display geographic data. Data is perhaps the most important component and can come from in-house collection, commercial providers, or other existing databases. People are needed to manage the system and apply it to problems. A successful GIS operates according to implementation plans and business rules unique to each organization.
This document discusses map projections, which are methods for translating the three-dimensional surface of the Earth onto a two-dimensional map. It describes three types of developable projection surfaces - conic, cylindrical, and planar - that are used to create different map projections. Specific projections are then outlined, including what geometric properties they preserve or distort (shape, area, distance, direction) and their common uses. The document provides a detailed overview of different GIS map projection techniques.
The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information to users with GPS receivers. It was developed by the U.S. Department of Defense in the 1970s to overcome limitations of previous navigation systems. GPS uses 24 satellites that orbit the Earth and transmit signals that allow receivers to determine their precise location, speed and direction. The system works by calculating the time delay of signals from at least 3 satellites to determine the user's position through trilateration. GPS has both military and civilian applications including vehicle navigation, map-making, tracking valuable assets, and outdoor recreational activities.
Types of Platforms
1. Airbrone Platforms
2. Spacebrone Platforms
Platforms are Vital Role in remote sensing data acquisition
Necessary to correct the position the remote sensors that collect data from the objects of interest
This document discusses differential GPS (DGPS), which improves the accuracy of GPS positioning. It works by using a stationary GPS receiver at a known location to calculate error corrections, which are transmitted to a roving receiver to improve its position accuracy. DGPS can reduce GPS errors from sources like atmospheric delays, satellite orbit issues, and multipath effects, providing sub-meter accuracy compared to the 5-10 meter accuracy of standard GPS. It allows real-time position correction or post-processed correction through data from a fixed base station.
The document provides an overview of GPS (Global Positioning System) including:
- GPS uses 24 satellites and their ground stations as reference points to calculate positions accurate to within meters.
- It works globally in all weather and allows users to determine their location, velocity, and time.
- GPS was originally developed by the US Department of Defense but is now widely used by civilians as well as the military.
The document discusses various methods of georeferencing, which is assigning accurate locations to spatial information. The most comprehensive method is using latitude and longitude, which defines locations based on angles from the equator and Greenwich Meridian. However, the Earth's curved surface poses issues for technologies that work with flat maps and data. Therefore, map projections are used to translate locations on the spherical Earth onto flat planes or surfaces, though all projections introduce some distortion. Common projections include cylindrical, conic, and the Universal Transverse Mercator system.
A GIS has five key components: hardware, software, data, people, and methods. Hardware is the computer system that runs GIS software. GIS software provides tools to store, analyze, and display geographic data. Data is perhaps the most important component and can come from in-house collection, commercial providers, or other existing databases. People are needed to manage the system and apply it to problems. A successful GIS operates according to implementation plans and business rules unique to each organization.
This document discusses map projections, which are methods for translating the three-dimensional surface of the Earth onto a two-dimensional map. It describes three types of developable projection surfaces - conic, cylindrical, and planar - that are used to create different map projections. Specific projections are then outlined, including what geometric properties they preserve or distort (shape, area, distance, direction) and their common uses. The document provides a detailed overview of different GIS map projection techniques.
The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information to users with GPS receivers. It was developed by the U.S. Department of Defense in the 1970s to overcome limitations of previous navigation systems. GPS uses 24 satellites that orbit the Earth and transmit signals that allow receivers to determine their precise location, speed and direction. The system works by calculating the time delay of signals from at least 3 satellites to determine the user's position through trilateration. GPS has both military and civilian applications including vehicle navigation, map-making, tracking valuable assets, and outdoor recreational activities.
Types of Platforms
1. Airbrone Platforms
2. Spacebrone Platforms
Platforms are Vital Role in remote sensing data acquisition
Necessary to correct the position the remote sensors that collect data from the objects of interest
This document discusses differential GPS (DGPS), which improves the accuracy of GPS positioning. It works by using a stationary GPS receiver at a known location to calculate error corrections, which are transmitted to a roving receiver to improve its position accuracy. DGPS can reduce GPS errors from sources like atmospheric delays, satellite orbit issues, and multipath effects, providing sub-meter accuracy compared to the 5-10 meter accuracy of standard GPS. It allows real-time position correction or post-processed correction through data from a fixed base station.
Geo synchronous and Sun synchronous SatellitesTilok Chetri
There are three main types of satellite orbits:
1) Polar orbits have an inclination of 90 degrees, allowing satellites to observe the entire Earth as it rotates. They complete an orbit every 90 minutes.
2) Sun synchronous orbits allow satellites to pass over the same location at the same local time each day. These orbits are between 700-800 km in altitude.
3) Geosynchronous orbits circle the Earth at the same rate it rotates, allowing satellites to continuously observe nearly half of the Earth. These orbits are used for weather monitoring and communication satellites. Each orbit type has advantages and disadvantages for different applications.
This document discusses methods for calculating the heights of objects like trees and buildings from aerial photos. It describes the relief/radial displacement method, where the displacement between the top and bottom of an object seen in a single aerial photo is used along with the distance from the principal point to determine height. It explains that relief displacement occurs due to perspective projection and varies with object elevation relative to the datum. An example problem demonstrates using measured displacement and distance to calculate an object's height given the flying height.
This document provides an overview of key concepts in GIS including shapefiles, grids, rasters, vectors, DEM, TIN, coordinate systems, and common file formats. It discusses the differences between raster and vector data, and explains that shapefiles are commonly used to store vector data while grids are used for raster data. DEM and TIN are introduced as methods for representing elevation data. The document also covers projected and unprojected coordinate systems and provides examples of coordinate systems. Common file formats for both raster and vector data are listed.
This document discusses remote sensing platforms and sensors. It describes the different types of orbits used by remote sensing satellites, including low Earth orbit, sun synchronous orbit, and geostationary orbit. It also outlines the various platforms that can be used, such as ground-based, airborne, and space-borne. Finally, it examines the characteristics of remote sensing sensors, including spatial, spectral, radiometric, and temporal resolution.
Remote sensing and GIS techniques are useful tools for civil engineering projects. There are several models that can be used to represent the shape of the Earth, including flat, spherical, and ellipsoidal models. The ellipsoidal model is needed for accurate measurements over long distances. A geodetic datum defines the parameters of the reference ellipsoid and the orientation of the coordinate system grid. Common datums include NAD27 and NAD83, and transformations allow conversion between them. Map projections, such as Mercator and UTM, are used to represent the 3D Earth on a 2D surface, inevitably distorting some spatial properties like shape, area, or distance.
This document provides an introduction to Geographic Information Systems (GIS). It defines GIS as a system designed to store, manipulate, analyze and display spatially referenced data. The key components of a GIS are hardware, software and data. Common GIS software includes desktop programs like ArcGIS and open-source options like QGIS. GIS can incorporate different types of spatial data like raster, vector and remote sensing data along with associated attribute tables. Example applications discussed are in hydrology, including watershed analysis and flood modeling.
This document discusses aerial photography and how to determine flight direction from aerial photographs. It begins by defining aerial photography and noting that quality is determined by factors like the camera lens and material. Aerial photographs are classified by camera orientation and focal length. Annotations on photographs like fiducial marks, principal points, and X/Y coordinates are used to determine flight direction by finding matching or conjugate points between overlapping photographs. Careful planning of factors like scale, camera format, and overlap is needed to acquire the photographs and cover the study area.
Digital Elevation Model (DEM) is the digital representation of the land surface elevation with respect to any reference datum. DEM is frequently used to refer to any digital representation of a topographic surface. DEM is the simplest form of digital representation of topography. GIS applications depend mainly on DEMs, today.
Geographic Information Systems (GIS) is a computer system that uses software and hardware to capture, store, analyze and manage spatially referenced data. GIS can be used for various applications such as crime mapping, transportation planning, and infrastructure management. Specifically for road networking, GIS helps with the design, surveying, construction, operation, and maintenance of road networks. It allows users to integrate data, visualize information, and make informed decisions at various stages of the infrastructure life cycle. GIS is becoming increasingly important in Sri Lanka for applications such as transportation planning, rural development, and infrastructure projects.
This document discusses three methods for measuring height from aerial photographs: relief displacement, shadow length, and stereoscopic parallax. Relief displacement measures height by how far an object is shifted from its true position in an aerial photo due to its elevation. Shadow length measures height by using the length of an object's shadow and the sun angle. Stereoscopic parallax measures height by comparing the difference in an object's position between two overlapping aerial photos taken from different positions. Formulas are provided for calculating height from measurements obtained using each of these three methods.
A Digital Terrain Model (DTM) is a digital file that provides a detailed 3D representation of the topography of the Earth's surface. It consists of terrain elevations at regularly spaced intervals that can be used to create 3D visualizations and analyze slope, aspect, height, and other topographical features. DTMs with draped aerial imagery can help with planning, engineering, and environmental impact assessments by providing accurate 3D models of land surfaces. They are used across a variety of industries and applications.
Aerial photographs and their interpretationSumant Diwakar
Aerial photographs provide valuable information about the coastal and terrestrial environment when interpreted correctly. Vertical aerial photographs can be used to update existing maps and create new maps. Simple instruments can be used to correct horizontal distortion in aerial photographs and transfer information to line maps. More advanced photogrammetric equipment is required to correct for height displacement. Stereoscopic analysis of overlapping aerial photographs allows for three-dimensional interpretation of terrain and features.
Role of electromagnetic Radiation in Remote SensingNzar Braim
This document provides an overview of electromagnetic radiation and its role in remote sensing. It defines key characteristics of electromagnetic waves like amplitude, wavelength, frequency, and speed. It describes the electromagnetic spectrum and different radiation types. Laws governing radiation like Kirchhoff's law, Stefan-Boltzmann law, and Wien's displacement law are covered. The document also discusses how radiation interacts with the atmosphere through scattering, absorption, and refraction.
This document discusses key concepts related to data in GIS systems. It describes the different types of spatial and attribute data as well as vector and raster data formats. It explains how data is organized into layers and how those layers can be queried and overlaid to integrate information from different sources and analyze spatial patterns in the data.
This document discusses geodetic systems and how they represent the Earth mathematically. It defines key concepts like datums, ellipsoids, and coordinate systems. Specifically, it explains that datums define geodetic systems using reference ellipsoids that approximate the geoid and Earth's irregular shape. Common datums like NAD27, NAD83, and WGS84 are described that use different ellipsoids and reference points. It also outlines how latitude, longitude, and elevation are used in geographic coordinate systems to specify locations on Earth.
Application of gis & rs in urban planning sathish1446
Remote sensing uses sensors aboard satellites or aircraft to acquire spatial, spectral and temporal data about objects without physical contact. This data is digitized and processed into images. GIS is a system that integrates hardware, software and data to capture, store, analyze and display spatial or geographic information. Remote sensing and GIS are useful tools for urban planning applications such as land use/cover mapping, environmental monitoring, updating basemaps, studying urban growth, transportation systems, and site suitability analysis. GIS allows for overlaying of maps, buffering, and route analysis to support zoning, land management, emergency response and other planning needs. Together, remote sensing and GIS provide timely, reliable spatial data and analysis functions for addressing challenges
This document discusses GIS topology, which establishes rules for how geographic features share geometry and spatial relationships. Topology ensures data quality, enhances analysis, and manages coincident geometry. It has three components: connectivity between nodes and arcs, area definition using polygon boundaries, and contiguity to determine adjacent features. Topological rules prevent errors like overlaps, gaps, dangles and ensure proper containment of points and boundaries.
DEFINITION :
GIS is a powerful set of tools for collecting, storing , retrieving at will, transforming and displaying spatial data from the real world for a particular set of purposes
APPLICATION AREAS OF GIS
Agriculture
Business
Electric/Gas utilities
Environment
Forestry
Geology
Hydrology
Land-use planning
Local government
Mapping
11. Military
12. Risk management
13. Site planning
14. Transportation
15. Water / Waste water industry
COMPONENTS OF GIS
DATA INPUT
SPATIAL DATA MODEL
Data Model:
It describes in an abstract way how the data is represented in an information system or in DBMS
Spatial Data Model :
The models or abstractions of reality that are intended to have some similarity with selected aspects of the real world
Creation of analogue and digital spatial data sets involves seven levels of model development and abstraction
SPATIAL DATA MODEL
Conceptual model : A view of reality
Analog model : Human conceptualization leads to analogue abstraction
Spatial data models : Formalization of analogue abstractions without any conventions
Database model : How the data are recorded in the computer
Physical computational model : Particular representation of the data structures in computer memory
Data manipulation model : Accepted axioms and rules for handling the data
SPATIAL DATA MODEL
SPATIAL DATA MODEL
Objects on the earth surface are shown as continuous and discrete objects in spatial data models
Types of data models
Raster data model
vector data models
RASTER DATA MODEL
Basic Elements :
Extent
Rows
Columns
Origin
Orientation
Resolution: pixel = grain = grid cell
Ex: Bit Map Image (BMP),Joint Photographic Expert Group (JPEG), Portable Network Graphics(PNG) etc
RASTER DATA MODEL
VECTOR DATA MODEL
Basic Elements:
Location (x,y) or (x,y,z)
Explicit, i.e. pegged to a coordinate system
Different coordinate system (and precision) require different values
o e.g. UTM as integer (but large)
o Lat, long as two floating point numbers +/-
Points are used to build more complex features
Ex: Auto CAD Drawing File(DWG), Data Interchange(exchange) File(DXF), Vector Product Format (VPF) etc
VECTOR DATA MODEL
RASTER vs VECTORRaster is faster but Vector is corrector
TESSELLATIONS OF CONTINUOUS FIELDS
Triangular Irregular Network: (TIN)
TIN is a vector data structure for representing geographical information that is continuous
Digital elevation model
TIN is generally used to create Digital Elevation Model (DEM)
DIGITAL ELEVATION MODEL
DATA STRUCTURES
Data structure tells about how the data is stored
Data organization in raster data structures
Each cell is referenced directly
Each overlay Is referenced directly
Each mapping unit is referenced directly
Each overlay is separate file with general header
A Presentation on Railway Passenger Reservation System (PRS) by Sourabh KumarSourabh Kumar
A Presentation on Indian Railway Passenger Reservation System (PRS) by Sourabh Kumar. Set of 29 slides All in one and up to date.Prepared during the B.Tech Training Seminar.
The document describes the development of a safety information system for unmanned railway level crossings in India using geographic information systems (GIS). Unmanned level crossings on the Shahdra-Shamli-Tapri railway route were surveyed using GPS to collect location data and characteristics. This data was stored and analyzed in a GIS database along with accident statistics from 2008-2013. A spatial map was created showing the railway lines, level crossings, roads, villages etc. as different layers. Queries could then identify accidental level crossings. The system aims to inform road users in advance about level crossing characteristics to increase safety awareness.
Geo synchronous and Sun synchronous SatellitesTilok Chetri
There are three main types of satellite orbits:
1) Polar orbits have an inclination of 90 degrees, allowing satellites to observe the entire Earth as it rotates. They complete an orbit every 90 minutes.
2) Sun synchronous orbits allow satellites to pass over the same location at the same local time each day. These orbits are between 700-800 km in altitude.
3) Geosynchronous orbits circle the Earth at the same rate it rotates, allowing satellites to continuously observe nearly half of the Earth. These orbits are used for weather monitoring and communication satellites. Each orbit type has advantages and disadvantages for different applications.
This document discusses methods for calculating the heights of objects like trees and buildings from aerial photos. It describes the relief/radial displacement method, where the displacement between the top and bottom of an object seen in a single aerial photo is used along with the distance from the principal point to determine height. It explains that relief displacement occurs due to perspective projection and varies with object elevation relative to the datum. An example problem demonstrates using measured displacement and distance to calculate an object's height given the flying height.
This document provides an overview of key concepts in GIS including shapefiles, grids, rasters, vectors, DEM, TIN, coordinate systems, and common file formats. It discusses the differences between raster and vector data, and explains that shapefiles are commonly used to store vector data while grids are used for raster data. DEM and TIN are introduced as methods for representing elevation data. The document also covers projected and unprojected coordinate systems and provides examples of coordinate systems. Common file formats for both raster and vector data are listed.
This document discusses remote sensing platforms and sensors. It describes the different types of orbits used by remote sensing satellites, including low Earth orbit, sun synchronous orbit, and geostationary orbit. It also outlines the various platforms that can be used, such as ground-based, airborne, and space-borne. Finally, it examines the characteristics of remote sensing sensors, including spatial, spectral, radiometric, and temporal resolution.
Remote sensing and GIS techniques are useful tools for civil engineering projects. There are several models that can be used to represent the shape of the Earth, including flat, spherical, and ellipsoidal models. The ellipsoidal model is needed for accurate measurements over long distances. A geodetic datum defines the parameters of the reference ellipsoid and the orientation of the coordinate system grid. Common datums include NAD27 and NAD83, and transformations allow conversion between them. Map projections, such as Mercator and UTM, are used to represent the 3D Earth on a 2D surface, inevitably distorting some spatial properties like shape, area, or distance.
This document provides an introduction to Geographic Information Systems (GIS). It defines GIS as a system designed to store, manipulate, analyze and display spatially referenced data. The key components of a GIS are hardware, software and data. Common GIS software includes desktop programs like ArcGIS and open-source options like QGIS. GIS can incorporate different types of spatial data like raster, vector and remote sensing data along with associated attribute tables. Example applications discussed are in hydrology, including watershed analysis and flood modeling.
This document discusses aerial photography and how to determine flight direction from aerial photographs. It begins by defining aerial photography and noting that quality is determined by factors like the camera lens and material. Aerial photographs are classified by camera orientation and focal length. Annotations on photographs like fiducial marks, principal points, and X/Y coordinates are used to determine flight direction by finding matching or conjugate points between overlapping photographs. Careful planning of factors like scale, camera format, and overlap is needed to acquire the photographs and cover the study area.
Digital Elevation Model (DEM) is the digital representation of the land surface elevation with respect to any reference datum. DEM is frequently used to refer to any digital representation of a topographic surface. DEM is the simplest form of digital representation of topography. GIS applications depend mainly on DEMs, today.
Geographic Information Systems (GIS) is a computer system that uses software and hardware to capture, store, analyze and manage spatially referenced data. GIS can be used for various applications such as crime mapping, transportation planning, and infrastructure management. Specifically for road networking, GIS helps with the design, surveying, construction, operation, and maintenance of road networks. It allows users to integrate data, visualize information, and make informed decisions at various stages of the infrastructure life cycle. GIS is becoming increasingly important in Sri Lanka for applications such as transportation planning, rural development, and infrastructure projects.
This document discusses three methods for measuring height from aerial photographs: relief displacement, shadow length, and stereoscopic parallax. Relief displacement measures height by how far an object is shifted from its true position in an aerial photo due to its elevation. Shadow length measures height by using the length of an object's shadow and the sun angle. Stereoscopic parallax measures height by comparing the difference in an object's position between two overlapping aerial photos taken from different positions. Formulas are provided for calculating height from measurements obtained using each of these three methods.
A Digital Terrain Model (DTM) is a digital file that provides a detailed 3D representation of the topography of the Earth's surface. It consists of terrain elevations at regularly spaced intervals that can be used to create 3D visualizations and analyze slope, aspect, height, and other topographical features. DTMs with draped aerial imagery can help with planning, engineering, and environmental impact assessments by providing accurate 3D models of land surfaces. They are used across a variety of industries and applications.
Aerial photographs and their interpretationSumant Diwakar
Aerial photographs provide valuable information about the coastal and terrestrial environment when interpreted correctly. Vertical aerial photographs can be used to update existing maps and create new maps. Simple instruments can be used to correct horizontal distortion in aerial photographs and transfer information to line maps. More advanced photogrammetric equipment is required to correct for height displacement. Stereoscopic analysis of overlapping aerial photographs allows for three-dimensional interpretation of terrain and features.
Role of electromagnetic Radiation in Remote SensingNzar Braim
This document provides an overview of electromagnetic radiation and its role in remote sensing. It defines key characteristics of electromagnetic waves like amplitude, wavelength, frequency, and speed. It describes the electromagnetic spectrum and different radiation types. Laws governing radiation like Kirchhoff's law, Stefan-Boltzmann law, and Wien's displacement law are covered. The document also discusses how radiation interacts with the atmosphere through scattering, absorption, and refraction.
This document discusses key concepts related to data in GIS systems. It describes the different types of spatial and attribute data as well as vector and raster data formats. It explains how data is organized into layers and how those layers can be queried and overlaid to integrate information from different sources and analyze spatial patterns in the data.
This document discusses geodetic systems and how they represent the Earth mathematically. It defines key concepts like datums, ellipsoids, and coordinate systems. Specifically, it explains that datums define geodetic systems using reference ellipsoids that approximate the geoid and Earth's irregular shape. Common datums like NAD27, NAD83, and WGS84 are described that use different ellipsoids and reference points. It also outlines how latitude, longitude, and elevation are used in geographic coordinate systems to specify locations on Earth.
Application of gis & rs in urban planning sathish1446
Remote sensing uses sensors aboard satellites or aircraft to acquire spatial, spectral and temporal data about objects without physical contact. This data is digitized and processed into images. GIS is a system that integrates hardware, software and data to capture, store, analyze and display spatial or geographic information. Remote sensing and GIS are useful tools for urban planning applications such as land use/cover mapping, environmental monitoring, updating basemaps, studying urban growth, transportation systems, and site suitability analysis. GIS allows for overlaying of maps, buffering, and route analysis to support zoning, land management, emergency response and other planning needs. Together, remote sensing and GIS provide timely, reliable spatial data and analysis functions for addressing challenges
This document discusses GIS topology, which establishes rules for how geographic features share geometry and spatial relationships. Topology ensures data quality, enhances analysis, and manages coincident geometry. It has three components: connectivity between nodes and arcs, area definition using polygon boundaries, and contiguity to determine adjacent features. Topological rules prevent errors like overlaps, gaps, dangles and ensure proper containment of points and boundaries.
DEFINITION :
GIS is a powerful set of tools for collecting, storing , retrieving at will, transforming and displaying spatial data from the real world for a particular set of purposes
APPLICATION AREAS OF GIS
Agriculture
Business
Electric/Gas utilities
Environment
Forestry
Geology
Hydrology
Land-use planning
Local government
Mapping
11. Military
12. Risk management
13. Site planning
14. Transportation
15. Water / Waste water industry
COMPONENTS OF GIS
DATA INPUT
SPATIAL DATA MODEL
Data Model:
It describes in an abstract way how the data is represented in an information system or in DBMS
Spatial Data Model :
The models or abstractions of reality that are intended to have some similarity with selected aspects of the real world
Creation of analogue and digital spatial data sets involves seven levels of model development and abstraction
SPATIAL DATA MODEL
Conceptual model : A view of reality
Analog model : Human conceptualization leads to analogue abstraction
Spatial data models : Formalization of analogue abstractions without any conventions
Database model : How the data are recorded in the computer
Physical computational model : Particular representation of the data structures in computer memory
Data manipulation model : Accepted axioms and rules for handling the data
SPATIAL DATA MODEL
SPATIAL DATA MODEL
Objects on the earth surface are shown as continuous and discrete objects in spatial data models
Types of data models
Raster data model
vector data models
RASTER DATA MODEL
Basic Elements :
Extent
Rows
Columns
Origin
Orientation
Resolution: pixel = grain = grid cell
Ex: Bit Map Image (BMP),Joint Photographic Expert Group (JPEG), Portable Network Graphics(PNG) etc
RASTER DATA MODEL
VECTOR DATA MODEL
Basic Elements:
Location (x,y) or (x,y,z)
Explicit, i.e. pegged to a coordinate system
Different coordinate system (and precision) require different values
o e.g. UTM as integer (but large)
o Lat, long as two floating point numbers +/-
Points are used to build more complex features
Ex: Auto CAD Drawing File(DWG), Data Interchange(exchange) File(DXF), Vector Product Format (VPF) etc
VECTOR DATA MODEL
RASTER vs VECTORRaster is faster but Vector is corrector
TESSELLATIONS OF CONTINUOUS FIELDS
Triangular Irregular Network: (TIN)
TIN is a vector data structure for representing geographical information that is continuous
Digital elevation model
TIN is generally used to create Digital Elevation Model (DEM)
DIGITAL ELEVATION MODEL
DATA STRUCTURES
Data structure tells about how the data is stored
Data organization in raster data structures
Each cell is referenced directly
Each overlay Is referenced directly
Each mapping unit is referenced directly
Each overlay is separate file with general header
A Presentation on Railway Passenger Reservation System (PRS) by Sourabh KumarSourabh Kumar
A Presentation on Indian Railway Passenger Reservation System (PRS) by Sourabh Kumar. Set of 29 slides All in one and up to date.Prepared during the B.Tech Training Seminar.
The document describes the development of a safety information system for unmanned railway level crossings in India using geographic information systems (GIS). Unmanned level crossings on the Shahdra-Shamli-Tapri railway route were surveyed using GPS to collect location data and characteristics. This data was stored and analyzed in a GIS database along with accident statistics from 2008-2013. A spatial map was created showing the railway lines, level crossings, roads, villages etc. as different layers. Queries could then identify accidental level crossings. The system aims to inform road users in advance about level crossing characteristics to increase safety awareness.
Summer training report_on_indian_railwayanirudh patel
Indian Railways began with the first passenger train running between Bombay to Thane in 1853. It has since expanded to become one of the largest rail networks in the world, covering over 63,000 km across India. The network was developed primarily under British rule to facilitate economic and administrative needs. It has played a vital role in India's development, serving as a critical transportation system and integrating force for the nation.
Information Technology plays a vital role not only in a particular field, it provides various kinds of solutions and services to the various problems prevailing in many fields.Indian Railways exploits information technology at the maximum extent.It uses the information technology in an efficient way for providing better passenger services.
The online reservation system and unreserved ticketing system helps to solve the every day problems of the world biggest Indian Railway network
report on ACD (anti collision devices) in IEEE format by Tarun Khaneja ( 9034...Tarun Khaneja
1. The document describes an Anti-Collision Device (ACD) system used on trains in India to prevent accidents.
2. The ACD system uses GPS and radio transmitters on trains to constantly monitor train positions and speeds. If two trains are approaching each other on the same track and a collision is imminent, the ACDs will automatically apply the brakes to stop the trains.
3. The ACD system provides many safety and operational benefits over traditional railway safety systems, such as automatically detecting and preventing collisions in situations where human error could occur. It is being implemented across India's railway network to improve safety.
Railway_Presentation pdf (1) In this I have added whatever I have learned .pdfAmanKumar411419
The document provides an overview of several key technological systems used by Indian Railways. It discusses the Integrated Passenger Information System (IPIS) which disseminates real-time train information to passengers. It also describes the Passenger Reservation System (PRS) which facilitates online booking of over 1 million tickets daily. Additionally, the document outlines the RailNet intranet system for quick data transmission across railway divisions and the use of optical fiber communication for enhanced data capacity and transmission.
This document provides an overview of the Indian railway system presented at a seminar for railway managers. It discusses the history and organization of the 17 railway zones in India. It then summarizes several key departments and technologies used in Indian railways, including the passenger reservation system (PRS), unreserved ticketing system (UTS), freight operation information system (FOIS), communication mediums like RailNet and optical fiber cables, and interactive voice response systems (IVRS).
The document discusses information technology initiatives on Indian Railways. It outlines challenges around increasing efficiency and adapting to changes. Current IT systems on the railways are described as legacy applications in need of upgrades. The document then provides details on key IT systems implemented for passenger and freight transport, including the Passenger Reservation System (PRS), Unreserved Ticketing System (UTS), and Freight Operations Information System (FOIS). Future plans are discussed to further expand these systems and improve connectivity across the railway network.
Intelligent Collision avoidance and monitoring system for railway using wirel...Editor IJMTER
In the current railway systems, it is becoming ever more necessary to have safety
elements in order to avoid accidents. One of the important causes that can provoke serious accidents
is the existence of obstacles on the tracks, either fixed or mobile. This project deals about one of the
efficient methods to avoid train collision and obstacle detection. A GPS system is being used to
pinpoint the location of faults on tracks. The project presents a solution, to provide an intelligent
train tracking and management system to improve the existing railway transport service. The solution
is based on powerful combination of mobile computing, Global System for Mobile Communication
(GSM), Global Positioning System (GPS) technologies and software. The inbuilt GPS module
identifies the train location with a highest accuracy and transfers the information to the central
system. The availability of the information allows the train Controller to take accurate decisions as
for the train location. Positioning data along with train speed helps the central system to identify the
possible safety issues and react to them effectively using the communication methods provided by
the system.
Role of information technology in indian railwayNitesh Patil
Indian Railway was first introduced in 1853 running between Mumbai and Thane. It is now the second largest railway system in the world by size, with over 63,000 km of track and over 6,900 stations. It is fully owned by the Indian government and employs over 1.6 million people, making it one of the largest employers worldwide. Information technology has been widely adopted by Indian Railways, including online ticket booking, freight tracking, passenger information systems, and apps for ticket status. This has helped increase efficiency and revenue but some issues around capacity and functionality remain.
The document discusses anti-collision devices used in trains. It describes how anti-collision devices (ACD) use radio frequency and GPS to automatically brake trains 3 km ahead of a blockade to prevent collisions from human error or equipment failure. The ACD system was invented by Rajaram Bojji and installed on over 2,700 km of track in India, preventing 82% of accidents from 1997-2000. The ACD provides additional safety without replacing existing signaling and is a cost-effective solution without needing track cabling or inputs from train crews.
This document provides an overview of Intelligent Transport Systems (ITS) including a brief history, applications, and examples of ITS implementations in India. Some key points:
- ITS apply information technologies like sensors and computers to improve transport network operations, acquiring data on traffic and using it to guide traffic, enhance safety, and reduce costs.
- Common ITS applications include traffic monitoring, traveler information systems, vehicle control systems, and public transport management.
- Early ITS development began in the 1960s with systems in the US and Europe, with many countries now implementing ITS technologies and applications.
- India has piloted various ITS such as automatic traffic control systems in major cities, travel
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The document summarizes an industrial training presentation at the Government Engineering College in Ajmer about communications systems used in Indian railways. It discusses the key communication mediums like overhead lines and optical fiber cables. It then explains various digital systems used for tasks like freight tracking (FOIS), reservations (PRS), ticketing (UTS), signaling, and more. The document provides an overview of the different railway zones and their divisions across India and concludes with references used in the presentation.
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1. Presented by :-
Sumeet parmar
(120107232)
Sumit vikram
singh(120107234)
Abrar ahmed
(120107015)
APPLICATION OF GIS IN INDIAN
RAILWAYS
2. INDIAN RAILWAYS
Indian Railways is one of the world’s largest
rail networks under a single management.
It is the lifeline of the nation, the Indian Railways started
its service 161 years ago on 16 April 1853.
The Route Length is around 63,332 Km with more than
8000 stations & There are around 250,000 wagons and
9045 Locos.
It carries over 13 million passengers & 1.3 million tones
of freight everyday
The Gross Traffic Receipts is Rs.90,000 Crores.
3. NEED FOR GIS SYSTEM IN IR
ASSET MANGEMENT
Assets in IR are classified as: fixed(distributed),
moving, fixed (location specific)
GIS simplifies the management of geographically
distributed assets.
DESIGN & SAFETY
Decrease the probability of accidents and malfunctions
Real time monitoring of trains , Rail Radar, a live train
tracking service that runs on Google Maps
INFORMATION MANAGEMENT SYSTEM
Center for railway management system
FOIS
PRS
WISE
LRDSS
4. ASSET MANAGEMENT
Indian railways is a geographically distributed
organization
Assets are spread across the country
Types of assets :
Fixed (distributed): tracks, overhead ecltrified lines
Fixed(location specific ): station,yards
Moving : locomotives, coaches and wagons.
Simplifies the management of assets
5. ASSET MANAGEMENT
(CONT’D)
Assets management is done by base maps and
various maintenance and management systems
Base maps : Basic topgraphic sheets developed by
survey of india followed by adding
layers of assets owned by IR, finally adding
subsequent layers
Maintenance systems :
LMS : Locomotive management system
WISE : Workshop management system
TMS : Track management system
AWT : Automatic wagon tracking
6. INFORMATION MANAGEMENT
SYSTEM
CRIS : CENTRE FOR RAILWAY INFORMATION
SYSTEM
The Centre for Railway Information Systems (CRIS)
designs, develops, implements and maintains most
of the important information systems of Indian
Railways
It is located in Chanakyapuri, New Delhi. CRIS was
established in 1986 by the Ministry of Railways of India.
A unique feature of CRIS is collaboration by IT
specialists and railway experts on deputation from the
Indian Railways
7. INFORMATION MANAGEMENT
SYSTEM
PRS : PASSENGER RESERVATION SYSTEM
A nationwide online passenger reservation and
ticketing system, developed and maintained by CRIS, is
a client-server application developed
in C and Fortran on a Digital OpenVMS operating
system using RTR (Reliable Transaction Router)
as middleware.
CONCERT (Country-wide Network of Computerised
Enhanced Reservation & Ticketing) interconnects the
four regional computing systems (in New
Delhi, Mumbai, Kolkata and Chennai) into a national
PRS grid. . It allows a passenger anywhere to book
9. INFORMATION MANAGEMENT
SYSTEM
FOIS : FREIGHT OPERATIONS INFORMATION
SYSTEM
FOIS began as an application to track and monitor
the movement of wagons, locomotives and unit trains.
Now it is a complete management module for freight
trains handling the billing and revenue collections as
well.
10. INFORMATION MANAGEMENT
SYSTEM
BENEFITS OF FOIS :
It gives a total transparent system with continuos cargo
visibility
It provides an up to date business enviroment to the
customers with instant access to information regarding
their consignments in transit for just in time inventory.
Increased revenue
Savings in time and cost of
handling in yards
Improved customer service
and satisfaction
11. INFORMATION MANAGEMENT
SYSTEM
OTHER MANAGEMENT SYSTEMS
RBCS : RAIL BUDGET
COMPILATION SYSTEM
CMS : CREW MANAGEMENT
SYSTEM
MMIS : MATERIAL MANAGEMENT
INFORMATION SYSTEM
HRMS : HUMAN RESOURCE
MANAGEMENT SYSTEM
TMS : TRACK MAAGEMENT
SYSTEM
12. SAFETY
Indian Railways plans to fit GPS devices on each train and
which will track Google Maps for general usage. For each
train the cost of the GPS device would come to around Rs
70,000 to Rs 100,000 for each train. The tracking
instruments are expected to provide precision of 10
meters and delay of 2 minutes. These devices will be fitted
in nearly 100 trains.
The move is expected to help prevent accidents and avert
loss of lives. The Centre for Railway Information Systems
(CRIS), the technology arm of the Indian Railways, has
developed a GPS-based solution with help of Indian
Space Research Organization (ISRO), which can provide
exact location of a train with an accuracy of 10 metres,
and latency of 2 minutes, on a real-time basis.
ISRO’s INSAT-3C satellite will aid in location of moving
13. SAFETY
Every year about 400 gangmen are run over by
trains while working on the rail tracks.
To check these deaths, railways will use
Satellite Imaging for Rail Navigation (SIMRAN). This train
tracking technology has been developed by IIT-Kanpur and
Research Design and Standards Organisation (RDSO).
SIMRAN :
In March 2010, Indian Railways had announced a project
called Satellite Imaging for Rail Navigation (SIMRAN),
which aimed at providing real-time train tracking through
GPS and mobile (GSM) technologies.
GWS and ULCGWS are by products of simran
14. SAFETY
GWS :
It stands for gangmen warning system
Every year about 400 gangmen are run
over by trains while working on the rail
tracks
GWS is a byproduct of SIMRAN which works on GSM
technology
GWS would alert a gangman about an approaching train
from a distance of 2,000 metres. The gangman will have to
walk with a device which will warn him against the
approaching train.
Developed at a cost of Rs 30 lakh by IIT-KANPUR
15. SAFETY
ULCGWS :
It stands for Unmanned Level Crossing Gates
Warning System.
The accidents at unmanned level crossings are rampant in
railways. There have been several instances where
vehicles hit the boom barriers and disrupted movement of
trains.
SIMRAN tracks trains through GPS, GSM and/or RF tags.
The technology has been developed jointly by RDSO and
IIT-K.
In this, a device would be installed at level crossings, both
manned and unmanned, to alert road-users about the
approaching train.
The signal would change colour when the train is 2,000
16. SAFETY
ACD :
It stands for ANTI COLLISION DEVICE.
Train Collision prevention system
invented by Rajaram Bojji and patented
by Konkan Railway Corporation Ltd.
They take inputs from GPS satellite system for position
updates and network among themselves for exchanging
information using their data radio modems to take
decisions for timely auto-application of brakes to prevent
dangerous 'collisions', thus forming a 'Raksha Kavach'
(meaning a '(Train) Safety shield').
17. CONCLUSION
Indian Railways has used Information Technology
and GIS to improve the experience of passengers
and freight customers.
Increasingly, IT applications with the help of GIS are
being developed to address internal efficiency and
effectiveness. Indian Railways now finds itself in an
age in which rapid assimilation of IT in all walks of life
opens up greater opportunities.
GIS has increased the effectiveness of management
and safety in indian railways and will be of great use
in this sector.