Title :
Sidelobe reduction with nonlinear frequency modulated waveforms
Author :
Boukeffa, S. ; Jiang, Y. ; Jiang, T.
Author_Institution :
Coll. of Inf. & Commun. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
Pulse compression with Nonlinear Frequency Modulation (NLFM) is promising way for achieving fine resolution, good SNR, low cost, and good interference mitigation, A design method for nonlinear FM signals based on principle of Stationary phase is outlined. Ten popular methods of NLFM and LFM are investigated and their performance are assessed by measuring, sidelobe level reducing, Doppler sensitivity, and loss in SNR caused by Doppler shift for each method, all using medium pulse compression ratios. The simulation results are used to define the most suitable waveform for Sidelobe mitigation for SAR imaging system.
Keywords :
Doppler shift; FM radar; pulse compression; radar imaging; synthetic aperture radar; Doppler sensitivity; Doppler shift; SAR imaging system; medium pulse compression; nonlinear frequency modulated waveform; nonlinear frequency modulation; sidelobe mitigation; sidelobe reduction; signal-to-noise ratio; stationary phase; Doppler effect; Doppler radar; Frequency modulation; Matched filters; Shape; Signal to noise ratio; Doppler tolerance; Nonlinear Frequency Modulation; Pulse Compression; Sibelobe reduction; waveform design;
Conference_Titel :
Signal Processing and its Applications (CSPA), 2011 IEEE 7th International Colloquium on
Conference_Location :
Penang
Print_ISBN :
978-1-61284-414-5
DOI :
10.1109/CSPA.2011.5759910
