ps4_3a.m
close all; clear all; f0 =100e6; N =32768; tau=2e-6; B=10e6; % % % % Starting frequency of chirp (Hz) Number of points to sample pulse Pulse duration (seconds) Student input: Bandwidth of chirp (Hz)
dt=2*tau/N; % Setup time axis t=(-tau:dt:tau-dt
PROBLEM SET 4
ECE 714 Winter Quarter 2010
Assigned:
Due:
February 8th
February 17th in class
Instructor: Joel Johnson
Problem 1
(a) Find the range at which the radar echo from low grazing angle surface clutter equals receiver
noise for the following radar
PROBLEM SET 3
ECE 714 Winter Quarter 2010
Assigned:
Due:
January 22nd
February 1st in class
Instructor: Joel Johnson
Problem 1
In this problem we will use Monte Carlo simulation to study the effect of pre- and post-detection
integration. It is desired to
PROBLEM SET 2
ECE 714 Winter Quarter 2010
Assigned:
January 13th
Due:
January 22nd in class
Instructor: Joel Johnson
Problem 1
A 3.5 GHz radar system requires a minimum signal to noise ratio at the detector of 7 dB. The
radar has a peak transmit power of
PROBLEM SET 1
ECE 714 Winter Quarter 2010
Assigned:
Due:
January 4th
January 13th in class
Instructor: Joel Johnson
Problem 1
The time delays to and from three targets are 1.5 msec, 1.8 msec, and 2 msec, respectively.
(a) Find the range of these three tar
c clear all; close all; % Include post-detection integration of n-pulses % Includes Swerling case 0 or case 2 target % Number of realizations N N=1e6; % Number of pulses to integrate n na=[1 10]; % Signal to noise ratio for each value of n % Student formu
26: SAR 3b
Systems
SEASAT SAR Image
SEASAT SAR Image
SIR-C SAR Images
ERS-1
ERS-1
ERS-1 Image
ERS-1 SAR Image
50
100
150
200
250
300
350
400
450
500
100
200
300
400
500
600
700
DERA X-band Canberra SAR
DERA X-band Canberra SAR
radar frequency
X-band (9.75
24: SAR 2b
Synthetic Aperture Radar
Principles
historical background
SAR principles
SAR processing
SAR techniques
autofocus
MTI
interferometric SAR
spotlight mode
wide swath techniques
polarimetric SAR
non-cooperative ISAR
Applications
spaceborne SAR
airc
23: SAR 2 SAR Techniques
Synthetic Aperture Radar
Principles
historical background
SAR principles
SAR processing
SAR techniques
interferometric SAR
spotlight mode
wide swath techniques
polarimetric SAR
non-cooperative ISAR
Applications
spaceborne SAR
airc
21. Tracking - 2
Tracking Filters
Tracking
measured position
xn-xp
smoothed track
predicted position
New smoothed position xs=xp+ (xn-xp)
xp= next predicted position of the target
xn= measured target position
Tracking Filters
Tracking
= 1 joins data
= 0
PROBLEM SET 5
ECE 714 Winter Quarter 2010
Assigned:
Due:
February 17th
February 26th in class
Instructor: Joel Johnson
Problem 1
A radar system operates at a center frequency of 6.5 GHz, and uses a 1.5 kHz prf.
(a) Find the unambiguous range of this radar
PROBLEM SET 6
ECE 714 Winter Quarter 2010
Assigned:
Due:
February 26th
March 12th in class
Instructor: Joel Johnson
Problem 1
A synthetic aperture radar system operates at a center frequency of 9.65 GHz and uses a pulse of
bandwidth 300 MHz. The radar is
4.
(a)
Describe the essential features and advantages of pulse compression.
Distinguish between linear-FM pulse compression and phase-coded pulse
compression, describing the form of the transmitted signal and the processing
methods appropriate to each.
clear all; close all; % Include post-detection integration of n-pulses % Includes Swerling case 0 or case 1 target % Number of realizations N N=1e6; % Number of pulses to integrate n na=[1 10]; % Signal to noise ratio for each value of n % Student formula
clear all; close all; % Include post-detection integration of n-pulses % Number of realizations N N=1e6; % Number of pulses to integrate n na=[1 10]; % Signal to noise ratio (dB) for each value of n % Student formula: put correct values of SNR1 and SNR2 b
clear all; close all; % Include pre-detection integration of n-pulses % Number of realizations N N=1e6; % Number of pulses to integrate n na=[1 10]; % Signal to noise ratio (dB) for each value of n % Student formula: put correct values of SNR1 and SNR2 be
ECE 714 Project Description 2012
1. Write a description of any radar system of your choice explaining its
essential design parameters: Guidance; your report should be approximately 5 to
6 pages in length. Include figures where they aid you explanation. Re
19. Electronic Scanning 2
Phased Array Technology
PRINCIPAL COMPONENTS OF AN ACTIVE PHASED ARRAY RADAR!
Radiating elements
LNA
c
c
HPA
LNA
LNA
c
HPA
HPA
Low noise amplifier
High power amplifier
Phase shifter
LNA
c
HPA
Circulator
Beam former
Processor
TR Q
4. Displays
4.1 Cathode Ray Tubes
4.2 Types of display
4.3 Modern displays
6: Displays
Displays
Displays are used to present in visual form the information contained in the
radar echo signal, i.e. in a form suitable for operator interpretation and
action