星载分布式雷达相参合成效率随机误差影响分析

孙 旭; $2; $2; $2

引用本文:	孙旭，范明意，张佳佳，程木松. 星载分布式雷达相参合成效率随机误差影响分析[J]. 雷达科学与技术, 2025, 23(3): 343-348.[点击复制]
	SUN Xu, FAN Mingyi, ZHANG Jiajia, CHENG Musong. Analysis of Random Error Effects on Coherent Combination Efficiency of Spaceborne Distributed Radar[J]. Radar Science and Technology, 2025, 23(3): 343-348.[点击复制]

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星载分布式雷达相参合成效率随机误差影响分析
孙旭，范明意，张佳佳，程木松
中国电子科技集团公司第三十八研究所，安徽合肥 230088

摘要:

受幅度和相位不一致的影响，星载分布式雷达在目标区域的合成效率会随着幅相误差的存在而发生变化。本文在场叠加原理和数理统计方法的基础上，建立了随机幅度相位误差与合成效率之间的理论关系，并仿真分析了在幅度和相位误差分别满足均匀分布、指数分布和正态分布条件下的发射相参效率变化规律。结果表明，所建立的模型可用于分析随机幅度和相位误差对发射相参合成效率的影响，幅相误差的增大会导致发射相参合成效率降低，且随着节点数不断增加，相位误差对合成效率的影响也随之增加。

关键词: 星载分布式雷达发射相参随机误差合成效率

DOI：DOI:10.3969/j.issn.1672-2337.2025.03.012

分类号:TN958

基金项目:基础加强计划研究项目（No.2019-JCJQ-ZD-343-00）

Analysis of Random Error Effects on Coherent Combination Efficiency of Spaceborne Distributed Radar

SUN Xu, FAN Mingyi, ZHANG Jiajia, CHENG Musong

The 38th Research Institute of China Electronics Technology Group Corporation, Hefei 230088, China

Abstract:

Due to inconsistency of the amplitude and phase, the coherent combination efficiency of spaceborne distributed radar in the target area will change with the existence of amplitude and phase errors. In this paper, a theoretical relationship between random amplitude-phase errors and expected combination efficiency is established based on the superposition principle and mathematical statistics method. It simulates and analyzes the variation efficiency of the emission coherent efficiency under the condition that the amplitude and phase errors satisfy the uniform distribution, exponential distribution and normal distribution respectively. The results indicated that the model can be used to analyze the influence of random amplitude-phase errors on combination efficiency of coherent emission. The increase of amplitude-phase errors will lead to the decrease of combination efficiency, and with the increase of the number of array nodes, the influence of phase error on the combination efficiency will also increase.

Key words: spaceborne distributed radar coherent emission random error combination efficiency