Cart (Loading....) | Create Account
Close category search window
 

Mainlobe clutter cancellation by DPCA for space-based radars

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Wang, H.S.C. ; Aerosp. Corp., El Segundo, CA, USA

The author reviews the principle of displaced phase center antenna (DPCA) techniques for the cancellation of mainlobe clutter by introducing correction signals in the first stage of a multistage delay-line canceler. An equivalent network transfer function H(f, theta ) was used to demonstrate the canceler's shifting null response point for scatterers at various azimuthal positions theta off the radar beam center. The moving target indicator (MTI) clutter improvement factor (IF) is formulated in terms of a specified transfer function. Assuming that the radar antenna is a 25798-element rectangular array with unweighted element excitation on transmit and amplitude-weighted according to a Gaussian function on receive, the IF is calculated by an accurate evaluation of the double integrals numerically. The results for an L-band space-based radar with a platform velocity of 7.053 km/s are summarized in a series of curves showing IF in decibels versus clutter internal Doppler spread for various angles of radar beam scan in azimuth and elevation and for different values of radar pulse repetition frequency (PRF). From these results, it is concluded that, even in the worst scan and environment conditions, a 40-dB or better IF can be maintained for the L-band radar if a sufficiently high PRF, about 2 kHz, is used.<>

Published in:

Aerospace Applications Conference, 1991. Digest., 1991 IEEE

Date of Conference:

3-8 Feb. 1991

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.