极化单脉冲导引头角反质心干扰检测方法

doi:10.12305/j.issn.1001-506X.2025.08.07

摘要/Abstract

摘要：

单脉冲雷达导引头受到角反质心干扰时，测角结果会产生偏差，从而偏离舰船目标。对抗质心干扰的前提是干扰存在性检测。本文针对极化阵列体制，详细分析单目标和多目标的极化复单脉冲比的统计特性，进而根据恒虚警检测原理推导超椭球判决域的闭式解，提出利用极化复单脉冲比的多目标判决算法。在此基础上，根据舰船的距离向扩展特性，提出角反质心干扰存在性检测方法。仿真结果表明，所提算法的检测性能优于常规单脉冲雷达；目标极化散射矩阵会影响所提算法的检测性能；在设定的两种场景下，所提算法均能有效检测。

关键词: 角反质心干扰, 极化复单脉冲比, 超椭球判决域, 干扰存在性检测

Abstract:

When the monopulse radar seeker is subjected to angular centroid jamming, the angle measurement results are biased, causing the missile to deviate from the ship target. The premise of countering centroid jamming is the detection of interference presence. This paper focuses on the polarized array system and analyzes the statistical characteristics of the polarization complex monopulse ratio for single and multiple targets in detail. Subsequently, based on the principle of constant false alarm detection, a closed-form solution for hyper-ellipsoid decision domain is derived, and a multi-target decision algorithm using the polarization complex monopulse ratio is proposed. On this basis, considering the range extension characteristics of the ship, a detection method for the presence of angular centroid jamming is proposed. Simulation results show that the detection performance of the proposed algorithm is superior to that of conventional monopulse radar, the target polarization scattering matrix affects the detection performance of the proposed algorithm; and the proposed algorithm can effectively detect in the two scenarios that are set.

Key words: corner reflector centroid jamming, polarimetric complex monopulse ratio, hyper-ellipsoid decision domain, jamming presence detection

中图分类号:

TN 958

岳旭龙, 王罗胜斌, 徐振海. 极化单脉冲导引头角反质心干扰检测方法[J]. 系统工程与电子技术, 2025, 47(8): 2486-2497.

Xulong YUE, Luoshengbin WANG, Zhenhai XU. Detection method of corner reflector centroid jamming in polarization monopulse seeker[J]. Systems Engineering and Electronics, 2025, 47(8): 2486-2497.

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