DocumentCode :
3502530
Title :
Sidelobe reduction for matched filter range processing
Author :
Varshney, Lav R. ; Thomas, Daniel
Author_Institution :
Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA
fYear :
2003
fDate :
5-8 May 2003
Firstpage :
446
Lastpage :
451
Abstract :
Linear frequency modulation (LFM) matched filtering results in range sidelobes. These sidelobes are often objectionable because they may mask small targets or may be mistaken for targets themselves. Various methods of sidelobe control are investigated and their performance is measured. The methods of sidelobe reduction include dual apodization, spatially variant apodization, and leakage energy minimization. Nonlinear frequency modulation (NLFM) matched filtering is also investigated. A simulation was run to compare LFM with sidelobe control and NLFM, all using moderately low pulse compression ratios. Results suggest that generally, NLFM matched filtering has better detection and estimation characteristics than LFM with sidelobe control.
Keywords :
chirp modulation; frequency modulation; matched filters; minimisation; nonlinear filters; radar detection; radar interference; radar signal processing; dual apodization; leakage energy minimization; linear frequency modulation; matched filtering; nonlinear frequency modulation; pulse compression ratio; range sidelobes; sidelobe control; sidelobe reduction; spatially variant apodization; Chirp modulation; Continuous phase modulation; Filtering; Frequency modulation; Matched filters; Phase modulation; Pulse compression methods; Pulse modulation; Pulse width modulation; Radar detection;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radar Conference, 2003. Proceedings of the 2003 IEEE
Print_ISBN :
0-7803-7920-9
Type :
conf
DOI :
10.1109/NRC.2003.1203439
Filename :
1203439
Link To Document :
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