The document provides an overview of a presentation on remote sensing and GIS and their applications. It discusses what remote sensing is, the steps involved which include the source, sensors, and processing units. It describes different types of remote sensing based on the energy source, including passive sensors like Landsat and active sensors like LIDAR and RADAR. It outlines applications of remote sensing in areas like agriculture, natural resource management, and national security. It also provides an introduction to GIS, describing it as a computer-based information system for capturing and displaying spatially referenced data, and listing some of its functions and advantages.

1. A PRESENTATION ON
REMOTE SENSING & GIS AND IT’S
APPLICATION
SRI VENKATESWARA ENGINEERING
COLLEGE
PRESENTING BY: CH.GOPI CHAND
CIVIL ENGINEERING

2. Outlines
• Remote sensing
• GIS
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3. Remote sensing
• Remote sensing is the collection of information about an
object without being in direct physical contact with the
object.
• The processes of collecting information about Earth
surfaces and phenomena using sensors not in physical
contact with the surfaces and phenomena of interest.
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4. Some remote sensers
Remote Sensing & GIS Applications
Directorate

5. Steps in remote sensing
• A – Source
• B - Atmospheric interaction
• C – Target
• D – Sensor
• E - Receiving unit:
• F - Processing unit
• G - Information system
• H – Information

6. Steps in remote sensing

8. • Types of remote sensing
Based on source of energy
types
Passive sensors
•Landsat
•ASTER
•Quickbard
•Ikonos
Active Sensors
•LIDAR
•RADAR

11.  Optical remote sensing.
 Thermal remote sensing.
 Micro wave remote sensing.

12. Optical remote sensing
 In optical remote sensing , the sensors can only record
the radiation in visible bands, near infrared and short
wave infrared bands.
 Depending on the number of spectral bands used,
optical remote sensing can be classified into following
divisions:
1. Multispectral imaging system
2.Superspectral Imaging Systems

13. Thermal remote sensing
Thermal infrared radiation refers to electromagnetic
waves with a wavelength of between 3.5 and 20
micrometers.
Nowadays, both multi- and hyperspectral thermal
sensors are used

14.  1 mm to 1 m of electromagnetic spectrum
 Microwave sensing encompasses both active
and passive forms of remote sensing
 Longer wavelength microwave radiation can
penetrate through cloud cover, haze, dust, and
all but the heaviest

15. Platforms
Platforms are:
•Ground based
•Airborne
•Spaceborne
Sensing from 1 meter to 36,000 km height
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16. Aerial Camera Multispectral Satellite Radar Satellite Hyperspectral Sensor
Landsat/Ikonos/Quickbard Hyperion
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17. Application of Remote
sensing
 Urbanization & Transportation
◦ Updating road maps
◦ Asphalt conditions
◦ Wetland delineation
• Agriculture
– Crop health analysis
– Precision agriculture
– Compliance mapping
– Yield estimation
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18.  Natural Resource Management
◦ Habitat analysis
◦ Environmental assessment
◦ Pest/disease outbreaks
◦ Impervious surface mapping
◦ Lake monitoring
◦ Hydrology
◦ Landuse-Landcover monitoring
◦ Mineral province
◦ Geomorphology
◦ Geology
• National Security
-Targeting
- Disaster mapping and monitoring
-Damage assessment
-Weapons monitoring
-Homeland security
-Navigation
-Policy
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20. GIS (GEO GRAPHICAL INFORMATION
SYSTEM)
 Geographic Information System
(GIS) is a computer based
information system
 A system for capturing, storing, checking,
integrating, manipulating, analysing and
displaying data which are spatially referenced to
the Earth.

21. What GIS Does ?
 Mapping and *cartography
 Query
 Select
 Distance:
 Buffers
 Overlay
 Clip
 Merge
 Raster analysis
 3D
Continued….

22. Techniques used in GIS
Relating info. from
different sources
Data capture
Data integration
Projection and registration
Data structures
Data modeling

23. Advantages GIS
• Can cope with larger amounts of data
• Can cover large study areas (the whole world if necessary)
• Can cope with unlimited and frequent edits and changes
• More robust and resistant to damage
• Faster and more efficient
• Requires less person time and money

24. THANK‘Q’