车载Ka-SAR距离向自适应DBF方法

doi:10.3969/j.issn.0255-8297.2023.02.009

Abstract

Abstract: The directional deviation on the topographic relief of the image arising from the low height of the vehicle is nonnegligible during the verification of digital beam-forming (DBF) using Ka-band automotive synthetic aperture radar (Ka-SAR). Due to the inevitable errors of the DBF weight coefficients using scan on receive (SCORE) algorithm, the synthetic beam pattern would deviate from the ideal state and degrade the system performance. In this paper, an adaptive range DBF processing algorithm based on multi-channel SAR is proposed. The DBF weighting coefficients are adaptively generated by interference processing and phase extraction, which improves the receiving gain. The adaptive algorithm has the advantages of high precision, simple processing flow, low computational load and real-time implementation. Finally, the effectiveness of the algorithm is verified based on simulation and experimental data.

Key words: Ka-band, synthetic aperture radar, adaptive, digital beam-forming

CLC Number:

TN959.74

WEN Jing, HUA Wei, WANG Hui, GONG Qingkun. Adaptive Range Digital Beam-Forming Method for Ka-band Automotive Synthetic Aperture Radar[J]. Journal of Applied Sciences, 2023, 41(2): 284-295.

References

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Adaptive Range Digital Beam-Forming Method for Ka-band Automotive Synthetic Aperture Radar

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