DocumentCode :
3273958
Title :
SAR-ECCM using phase-perturbed LFM chirp signals and DRFM repeat jammer penalization
Author :
Soumekh, Mehrdad
Author_Institution :
Dept. of Electr. Eng., State Univ. of New York, USA
fYear :
2005
fDate :
9-12 May 2005
Firstpage :
507
Lastpage :
512
Abstract :
This work is concerned with developing radar signaling strategies and algorithms that enhance the performance of a synthetic aperture radar (SAR) to image targets in the presence of digital radio frequency memory (DRFM) repeat jammers. The approach is based on a manipulation/alteration of the transmitted signal and/or its parameters in the fast-time domain at every position of the synthetic aperture (pulse repetition interval, PRI); this scheme is known as pulse diversity. In particular, we utilize a modulated form of the transmitted chirp signal and/or vary the rate of the chirp at each PRI; the modulation and/or the rate is varied from one PRI to another, and these variations are only known to the user. The merits of these pulse diversity methods are studied using the autocorrelation and cross-correlation of these signals. We also present a signal processing method for penalizing a DRFM jammer that tries to repeat the radar signal.
Keywords :
chirp modulation; correlation methods; digital radio; diversity reception; electronic countermeasures; jamming; military radar; radar imaging; synthetic aperture radar; DRFM repeat jammer penalization; SAR-ECCM; autocorrelation method; crosscorrelation method; digital radio frequency memory; fast-time domain; manipulation-alteration method; phase-perturbed LFM chirp signal; pulse diversity method; pulse repetition interval; radar imaging; radar signal processing method; radar signaling strategy; synthetic aperture radar; transmitted chirp signal; Chirp modulation; Digital communication; Diversity methods; Frequency; Jamming; RF signals; Radar imaging; Radar signal processing; Signal processing algorithms; Synthetic aperture radar;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radar Conference, 2005 IEEE International
Print_ISBN :
0-7803-8881-X
Type :
conf
DOI :
10.1109/RADAR.2005.1435879
Filename :
1435879
Link To Document :
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