A Study on the Performance Improvement in Sidelobe Suppression for Pulse Compression of LFM Signal

Shin, Jeong-Hoon

Journal of the Korea Institute of Military Science and Technology 2006;9(3):95-100.

Jeong-Hoon Shin

LFM 신호의 펄스압축에 대한 부엽억제 성능향상 기법연구

신정훈

국방과학연구소

Abstract

The pulse compression technique using Linear FM signal is commonly used for improving the performance of both the detection range and range resolution in radar system. In general, the compressed LFM waveform has relatively large sidelobe level which may prevent a target from being detected when strong jammer or clutter signal is near the target signal. In this paper, we propose a new weighting method which uses the square-root weight to suppress the sidelobe level. Typical applications are missile seekers and tracking radar systems where target tracking range is available prior to the signal processing. By computer simulation, we show that the performance of the proposed method is better than that of the conventional weighting methods in terms of sidelobe suppression.

Key Words: Pulse Compression, LFM, Sidelobe Suppression