机载单通道雷达实波束扫描的前视探测

Abstract

Abstract:

Traditional side-looking synthetic aperture radar (SAR) and Doppler beam-sharpening (DBS) technologies cannot generate images of the areas in flight direction with high azimuth resolution. To alleviate this problem, an innovative approach based on real-beam scanning is presented. Moreover, both the feasibility and the applicable conditions of azimuth super-resolution are discussed. According to the model of echoes in which receiver power is modulated by beam gain, a modified Capon algorithm is employed to calculate the spatial spectrum. Numerical simulation indicates that it can achieve forward-looking imaging for an airborne single-channel radar, and its performance is better than that of Capon when strong signals and weak signals are in co-existence.

Key words: synthetic aperture radar, Doppler beam-sharpening, forward-looking imaging, beam scanning, super-resolution

CLC Number:

YANG Zhiwei, HE Shun, LIAO Guisheng. Forward-looking Detection for Airborne Single-channel Radar with Beam Scanning[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(12): 2240-2245.

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Forward-looking Detection for Airborne Single-channel Radar with Beam Scanning

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