HPRF和差天线雷达导引头杂波抑制方法

doi:10.12305/j.issn.1001-506X.2023.08.19

Abstract

Abstract:

High pulse repetition frequency (HPRF) sum difference antenna radar has important applications in missile-borne. It faces the problem of ground and sea clutter suppression with multiple range ambiguity in ultra-low altitude moving target detection. In view of the above problem, a clutter suppression approach of sum-difference channel time-domain cancellation is proposed. Based on the high correlation of clutter power spectrum between sum and difference channels, this approach uses difference-difference-double difference channels data to estimate clutter covariance matrix, and fits the clutter covariance matrix of sum channel, and achieves clutter cancellation of sum channel based on minimum variance criterion, which improves the clutter suppression performance of missile-borne radar. Simulation results verify the effectiveness of the proposed approach.

Key words: high pulse repetition frequency (HPRF), sum-difference antenna, missile-borne radar, time-domain cancellation, clutter suppression

CLC Number:

TN957.51

Yali NIU, Jingwei XU, Guisheng LIAO, Qingyun KAN, Guangjun LIU. Clutter suppression approach for missile-borne HPRF radar with sum-difference antenna[J]. Systems Engineering and Electronics, 2023, 45(8): 2455-2462.

Figures/Tables 10

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参数	数值	参数	数值
载频/GHz	16	占空比	0.2
平台速度/(m/s)	400	脉冲数	256
平台高度/m	1 000	杂噪比/dB	45
脉冲重复频率/kHz	500	信噪比/dB	10
采样率/MHz	4	距离门个数	8
方位波束宽度/(°)	6	目标速度/(m/s)	-50
俯仰波束宽度/(°)	6	目标距离/km	10

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Clutter suppression approach for missile-borne HPRF radar with sum-difference antenna

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