SAR processing with non-linear FM chirp waveforms.

Doerry, Armin Walter

Sandia National Laboratories

关键词: Signal-To-Noise Ratio;    Image Processing Synthetic Aperture Radar.;    Wave Forms;    Radar.;    Synthetic Aperture Radar.;   

DOI  :  10.2172/902597
RP-ID  :  SAND2006-7729
RP-ID  :  AC04-94AL85000
RP-ID  :  902597

美国|英语

来源: UNT Digital Library

【 摘 要 】

Nonlinear FM (NLFM) waveforms offer a radar matched filter output with inherently low range sidelobes. This yields a 1-2 dB advantage in Signal-to-Noise Ratio over the output of a Linear FM (LFM) waveform with equivalent sidelobe filtering. This report presents details of processing NLFM waveforms in both range and Doppler dimensions, with special emphasis on compensating intra-pulse Doppler, often cited as a weakness of NLFM waveforms.