基于KL散度的雷达信号波形抗截获性能评估

王旭东; 陆威*; 闫贺

doi:10.11999/JEIT161124

基于KL散度的雷达信号波形抗截获性能评估

doi: 10.11999/JEIT161124

基金项目:

国家自然科学基金 (61201208)，中国博士后科学基金(2014M561643)，中央高校基本科研业务费专项资金(NJ20150018)

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出版历程
- 收稿日期: 2016-10-21
- 修回日期: 2017-03-17
- 刊出日期: 2017-08-19

Anti-interception Performance Evaluation of Radar Signal Waveform Based on KL Divergence

Funds:

The National Natural Science Foundation of China (61201208), China Postdoctoral Science Foundation (2014M561643), The Fundamental Research Funds for the Central Universities (NJ20150018)

摘要

摘要: 该文给出了一种对13类常用雷达信号波形的抗截获性能进行评价的新方法，可为雷达波形的设计者提供评价波形抗截获性能的一般性准则。该准则假定白噪声信号具有最好的抗截获性能，通过将不同雷达信号波形和白噪声信号进行比较，得出雷达信号和白噪声的相似程度。首先，利用Wigner半圆法推出白噪声和雷达信号的特征分布函数，然后用KL散度来表示雷达信号和白噪声之间的相似性，较小的KL散度值，意味着较强的抗截获性能，反之亦然。理论推导和仿真验证表明这种评价准则可对不同雷达信号波形的抗截获性能进行有效评价。
- 雷达信号波形 /
- 抗截获性能 /
- 评价准则 /
- KL散度 /
- Wigner半圆法
Abstract: This paper presents a new method for evaluating the anti-interception performance of thirteen kinds of radar signals, which can be used to guide radar waveform designing. The method assumes that white noise signal has the best anti-interception performance, by comparing different radar signals with it, the similarity degree of radar signal and white noise signal can be obtained. First, the characteristics distribution function of white noise and radar signal distribution function are introduced using Wigner semicircle law. Second, KL divergence is used to represent the similarity between radar signal and white noise. Small value of KL divergence means better anti interception performance, and vice versa. Theoretical derivation and simulation results show that this method can evaluate the anti interception performance of different radar signals effectively.
- Radar signal waveform /
- Anti-interception performance /
- Evaluation criterion /
- KL divergence /
- Wigner semicircle law

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