L5: Radar Equation-Pulse Integration-RCSVan Atta-Cosec Antennas
The Radar Equation
Consider an isotropic antenna, fed with transmit power Pt .
The power density, in Watts/m2 , at range r is:
Pt .
1
4r
ECE4390
HW1
Due by Friday, 3.February 2017
1) A radar mounted on an automobile is to be used to determine the distance to a
vehicle traveling directly in front of it. The radar operates at a frequency
2. Radar Basics - 2
ERS-1 Earth Resources Satellite
Terra SAR - X
SEASAT Shuttle SAR Image
Airborne SAR Image of the
Pentagon
source: Sandia Corporation -http/www.sandia.gov !
Stealth aircraft
Radar E
ECE4390
Homework 2
Due by: Thursday, 7 March 2013
1. A VHF radar at 220MHz has a maximum unambiguous range of 180nmi.
(a) What is the first blind speed (in knots)?
(b) Repeat for an L-band radar at 12
Radar (Radio Detection And Ranging) Principle
Most common radar waveform: a series of short-duration rectangular-shaped
pulses modulating a sinewave carrier [pulse train]
Range to the target: determ
Integration of Radar Pulses
Scanning radar :
prf fp , antenna beamwidth qB (deg)
scans at a rate of qS o (deg/sec) = qS o /360 (revolutions/sec)
= qS o /6 (revolutions/min) = wr [rpm] for a 360deg ro
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ECE 4390
HW 1
Due by TUESDAY 2/5/13
1. The average time between false alarms is specified as 30 min and the receiver
bandwidth is 0.4 MHz.
(a) What is the probability of false alarm?
(b) What is the t
5: Noise, Clutter and Detection - 1
Contents!
3.1
3.2
3.3
3.4
3.5
Noise and statistics!
Detection against noise!
Clutter and clutter models!
CFAR!
Computer simulation of radar performance!
Noise
x
If