The document discusses the history and components of radar systems. It describes how radar works by transmitting pulses that reflect off targets and return to the radar's receiver. Key radar observables are discussed like target range, angle, size, speed and features. The document also covers different types of radar including pulse and continuous wave, and various applications such as air traffic control, weather monitoring, and military uses. It concludes by discussing emerging radar technologies.
Radars are very complex electronic and electromagnetic systems. Often they are
complex mechanical systems as well. Radar systems are composed of many different
subsystems, which themselves are composed of many different components. There is a great
diversity in the design of radar systems based on purpose, but the fundamental operation and
main set of subsystems is the same.
Radars are very complex electronic and electromagnetic systems. Often they are
complex mechanical systems as well. Radar systems are composed of many different
subsystems, which themselves are composed of many different components. There is a great
diversity in the design of radar systems based on purpose, but the fundamental operation and
main set of subsystems is the same.
hello readers i give my PPT presentation for about antenna and ther properties and working explain in this ppt
i hope you like it THANK YOU.......!!!!!!!
hello readers i give my PPT presentation for about antenna and ther properties and working explain in this ppt
i hope you like it THANK YOU.......!!!!!!!
Tutorial Content
This tutorial provides a broad-based discussion of radar system, covering the following topics:
-Introduction to Radars in Military and Commercial Applications
-Radar System Block Diagram
-Radar Antennas (slotted waveguide array, planar array), Transmitter (magnetron, solid-state), Receiver, Pedestal and Radome
-Plot Extraction, Tracking Algorithms and Display
-Radar Range Equation, Detection Performance
-Wave Propagation and Radar Cross Section
-Emerging and Advanced Radar Systems (phased-array, multi-beam, multi-mode, FMCW, solid-state)
In the discussion, practical systems, technical specifications and data will be used to enhance learning.In addition, simulation results will also be used to present findings.
The objective of the tutorial session is to equip participants with solid understanding of radar systems for system level applications and prepare them for advanced and professional radar courses, projects and research.
This tutorial is designed and developed based on the following references:
[1] G. W. Stimson, Introduction to Airborne Radar Second Edition, Scitech Publishing, 1998.
[2] L. V. Blake, A Guide to Basic Pulse-Radar Maximum-Range Calculation, NRL Report 6930, 1969.
[3] K. H. Lee, Radar Systems for Nanyang Technological University, TBSS, 2014.
Laser communications offer a viable alternative to RF communications for inter satellite links and other applications where high-performance links are a necessity.
This slide is for engineering and general students who are eager to learn and apply for their own work. There is a lot to learn in Microwave and Antenna. This slide is for students who want to make a presentation slide but not getting help anywhere about this topic. This slide is free to use.
power point presentation for ECE on working of radar
electronics and communication engineering ppt
all about how radar works and types of radar signal transmission
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
4. Bats use a basic form of radar
They send sound waves that reflect off of an
object just as electric radar systems do
5. The first form of radar created by humans
was the telemobiloscope
It was mainly used to detect ships to avoid
collisions
6. Radar was kept fairly secret during world
war II
Following the war, it was published that the
United States used radar to measure the
distance to the moon
It was later discovered that Hungary had
done this two years earlier than the U.S.
8. The components of a radar system.
1. Transmitter
2. Antenna
3. Receiver
4. Display unit
5. Power supply
6. Duplexer( improved radar).
9. Distance from the
radar
Measured from time
delay between
transmitted pulse and
returned signal
received
10. Remember, in general v=d/t and d=vt
The range is just a distance
Since radio waves travel at the speed of
light (v = c = 300,000 km/sec )
range = c•time/2
Why divided by 2?
11. The “2” is because the measured time is for
a round trip to and from the target. To
determine the range, you only want the time
to the object, so you take half!
12. Target
• Target range =
ct
2
where c = speed of light
t = round trip time
13.
14. Radar beams can be attenuated, reflected and
bent by the environment
• Atmospheric attenuation
• Reflection off of earth’s
surface
• Over-the-horizon
diffraction
• Atmospheric refraction
15. that the Doppler effect is the change in
frequency that occurs when a source and a
target are in relative motion.
The Doppler affect can be used in a CW radar
in order to determine velocity.
16.
17. Fd = 2Vr
λ
Fd = doppler shift
Vr = relative velocity of target with respect to
radar.
18. Motion Away:
Echo Frequency Decreases
Motion Towards:
Echo Frequency Increases
21. Employs continual
RADAR transmission
Separate transmit and
receive antennas
Relies on the
“DOPPLER SHIFT”
22. Continuous wave (CW) radars typically
determine target velocity, and can achieve
considerable ranges without the high peak
power. These radars are typically simpler,
more compact and less costly.
23. CW RF
Oscillator
Discriminator AMP Mixer
Indicator
OUT
IN
Transmitter Antenna
Antenna
24. An unmodulated CW radar is incapable of
detecting range, as there is no reference
point in the transmitted or returned signal
for measuring elapsed time.
By frequency modulating the CW signal,
differences between the transmitted and
received frequencies can be used to
estimate range.
25. Pulse Echo
Single Antenna
Comparitively low
SNR
Susceptible To
Jamming
Physical Range
Determined By PW.
Continuous Wave
Requires 2 Antennae
High SNR
More Difficult to Jam
But Easily Deceived
Amp can be tuned to
look for expected
frequencies
26. Penetration Capability
Uses electromagnetic wave so it require no
medium
Less susceptible to weather conditions
Flexible – can be used in number of ways
Beam spread can incorporate many targets
Reliable
27. Time factor
Wide beam spread
Larger targets can saturate receiver
Possibility of falsify readings
Interference sources
28. Airplanes use radar to avoid collisions and to
coordinate landings
Operators visually watch the radar outputs
and relay the information to pilots
29. Police officers use radar to detect people
who drive over the speed limit
Their radar units are compact for easy
portability and fast, accurate use
30. Ground mapping radar is often used in
construction settings
They drag the unit across the ground to
determine if there are any objects or
unstable soil where they plan on building
31. The military use radar to detect enemy
artillery as well as their own machinery
They can show where their vehicles and
soldiers are in relation to enemy machines
32. Used to study the Earth's ionosphere and its
interactions with the upper atmosphere, the
magnetosphere, and the solar wind .
33. Electrons in ionosphere
are radar targets
These electrons can
scatter radio waves
34. The strength of the echo received from the
ionosphere measures the number of
electrons able to scatter radio waves or what
we call electron.
35. Some electrons are moving
due to heat - In this case
the echo is scattered
The echo will contain a
range of frequency close
to the transmitter
frequency
As the temperature
increases, the electrons
move faster
So radar can act like a
thermometer and measure
the temperature of the
ionosphere
36. When an electron is
removed from an atom,
the remaining charged
atom is called an ion
The ion gas can have a
different temperature
from the electron gas
The electron/ion mixture
is known as a plasma and
is usually in motion (like
our wind)
So incoherent scatter
radar can also measure
wind speed
37.
38. The US Military is currently using
groundbreaking radar
This radar allows soldiers to see objects and
people through walls
39. Technology will continue to grow, and radar
will advance with it
Growth of radar technologies will be
accompanied by a wider variety of
applications
Radar in the future will most likely be as
common as cell phone applications are today
LIDAR is advanced type of radar which uses
visible light from laser.
40. REFERENCES
M. Kulkarni, “Microwave and Radar
Engineering”, 3rd edition, Umesh
Publication, 2003, pp. 493 – 536
Merri.I.skolnik, “Intoduction to Radar
System”, 3rd edition, Tata McGraw
Hill, 2003
“Types of Radar”, Engineers
Garage,2012[online]. Available:
http://www.engineersgaragee.
com/articles/type-of-radars
[accessed: September 2012]