Radar Warning Receivers
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Date
2018-10-17T12:50:38Z
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Abstract
Radar is an electromagnetic system used for detection, ranging and location of objects. It
operates by transmitting a particular type of waveform, i.e., a pulse modulated sine wave.
Radar can be designed to see through those conditions that are impervious to normal human
vision, such as darkness, haze, fog, rain and snow. Angular resolution, detection range and
Doppler performance are important attributes of Radar.
Radars are generally classified on the type of that is being transmitted, namely continuouswave
radars and pulse wave Radars.
Continuous-wave radars is a short-range measuring set. This kind radars is often used as
“Radar Altimeters” to measure the exact height during the landing procedure of an aircraft by
employing frequency sweeps and calculating the time taken by the pulse to travel to the
target and return.
Pulse wave Radar is a 4D radar system capable of detecting both target 3D location as well
as measuring radial velocity (range-rate). It uses the Doppler Effect to measure velocity.
Digital receivers play an important role in characterizing radar waveforms. Digital receivers
are modern devices that incorporate very high speed samplers to digitize the RF waveforms
that are received. Digitized RF samples are subjected to digital signal processing algorithms
in order to detect existence of a signal and also to measure its parameters namely amplitude,
frequency, phase and time of arrival etc.
Radars are the main threat against which electronic warfare system works. The task of
Electronic Warfare System is to detect radar pulse and take appropriate counter measures.
This project aims to simulate a Radar signal, detect and estimate the simulated Radar signal
by a Radar Warning Receiver.
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D V Tharun, Rohith P, Sunil Kumar A, 1NH14EE018, 1NH12EE041, 1NH14EE077