一种雷达辐射源信号脉内特征的综合评估方法

doi:10.19665/j.issn1001-2400.2019.05.002

摘要/Abstract

摘要：

针对在雷达辐射源信号分选中脉内特征评估指标单一的问题,提出了一种新的雷达辐射源信号脉内特征的综合评估方法。该方法首先建立脉内特征的三层指标评估体系,并根据建立的评估体系进行特征评估指标度量及归一化;然后结合专家先验知识及实际环境进行了区间层次分析以确定指标的权重区间,并使用改进的投影寻踪算法建立非线性方程优化模型;最后利用非单调投影谱梯度算法实现了主客观的决策融合。仿真结果表明,该方法可以根据具体电磁环境给出最佳的脉内特征评估结果,与现有方法相比,所提的评估方法更加全面。

关键词: 雷达辐射源, 特征评估, 脉内特征, 区间层次分析, 投影寻踪, 决策融合

Abstract:

In order to solve the problem of sorting of the single evaluation index of in-pulse characteristics in radar emitter signals, this paper proposes a novel method for evaluation of in-pulse characteristics. First, a three-layer index evaluation system of in-pulse characteristics is established, and the feature evaluation index is measured and normalized based on the established evaluation system. And then, the interval analytic hierarchy process based on the expert prior knowledge and the actual environment is used to determine the index weight interval, and the nonlinear equation optimization model is established by employing the improved projection pursuit algorithm. Finally, the non-monotone projection spectral gradient algorithm is used to achieve the subjective and objective decision fusion. Simulation results show that the proposed method can give the best in-pulse feature evaluation results according to the specific electromagnetic environment and is more comprehensive than the existing methods.

Key words: radar emitter, characteristics evaluation, in-pulse characteristics, interval analytic hierarchy process, projection pursuit, decision fusion

中图分类号:

TN956

刘明骞,李坤明,王川川,张顺. 一种雷达辐射源信号脉内特征的综合评估方法[J]. 西安电子科技大学学报, 2019, 46(5): 8-14.

LIU Mingqian,LI Kunming,WANG Chuanchuan,ZHANG Shun. Method for comprehensive evaluation of in-pulse characteristics of radar emitter signals[J]. Journal of Xidian University, 2019, 46(5): 8-14.

图/表 7

表1

指标层专家区间分析结果"

时间复杂度	空间复杂度	类内类间距离	M距离	B距离	分布指标	信噪比影响显著性	信噪比敏感性	特征抗噪性	类型适应性	参数适应性
$[0.8750, 0.8843]$	$[0.1157, 0.1250]$	$[0.7065, 0.7415]$	$[0.1461, 0.1739]$	$[0.1124, 0.1196]$	$[0.0398, 0.0482]$	$[0.3018, 0.3115]$	$[0.2942, 0.3018]$	$[0.3461, 0.3566]$	$[0.4800, 0.5200]$	$[0.4800, 0.5200]$

表1

表2

图1

表3

表4

表5

表6

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环境	复杂性	分离性	稳定性	适应性
模拟环境一	[0.3225,0.3442]	[0.1209,0.1423]	[0.3049,0.3118]	[0.2231,0.2303]
模拟环境二	[0.0406,0.0422]	[0.4819,0.4843]	[0.3786,0.3856]	[0.0879,0.0989]

环境	复杂度	分离性	稳定性	适应性
模拟环境一	0.3442	0.1352	0.3049	0.2231
模拟环境二	0.0414	0.4827	0.3786	0.0879