非相干两点源比幅测角性能分析

doi:10.12305/j.issn.1001-506X.2025.10.06

摘要/Abstract

摘要：

针对空间非相干两点源场景下单脉冲比幅测角的性能分析问题，给出两点源比幅测角一般模型。在此基础上，推导非相关两点源的比幅测角解析闭合表达式，并给出3种典型情况及其约束条件。然后，分析比幅测角误差与信号功率比、方位角等误差的理论公式。最后，通过数字仿真给出两点源信号功率比、信号方位等对比幅测角的影响以及相关误差分析。结果表明：测角均值位于两点源之间；相关仿真分析结果与理论一致。本文完善了两点源比幅测角理论，为非相干两点源测角性能分析、测角系统方案优化等提供理论依据。

关键词: 单脉冲雷达, 非相干两点源, 比幅测角, 理论性能分析

Abstract:

This paper focuses on the problem of the amplitude-comparison angle measurement of the monopulse in the scene of noncoherent dual sources. The paper describes the general model of the amplitude-comparison angle measurement under dual sources. On this basis, the analytical expression of the estimated angle is derived, and the three typical cases are obtained under three classical and restriction conditions. Furthermore, amplitude-comparison angle measurement error, the theoretical errors of the estimated angle caused by the signals’ power ratio and the signals’ angles are given. Finally, the numerical simulations are provided to analyze the influences and releated error of the signals’ power ratio and the signals’ angles to the estimated angle. The results illuminate that the mean value of angle measurement between the angles of the dual sources and the validity of the derived expressions are also proved. This paper will improve the theory of the amplitude-comparison angle measurement and can also provide a consultation to the performance analyses of amplitude-comparison angle measurement under noncoherent dual sources and some scheme optimizations for the angle measurement system.

Key words: monopulse radar, noncoherent dual source, amplitude-comparison angle measurement, theoretical performance analysis

中图分类号:

TN 971

汪兵, 张圣鹋, 杨益川, 周黎明, 顾杰, 高昭昭. 非相干两点源比幅测角性能分析[J]. 系统工程与电子技术, 2025, 47(10): 3179-3187.

Bing WANG, Shengmiao ZHANG, Yichuan YANG, Liming ZHOU, Jie GU, Zhaozhao GAO. Performance analysis of amplitude-comparison angle measurement for noncoherent dual sources[J]. Systems Engineering and Electronics, 2025, 47(10): 3179-3187.

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