基于OTR和SHT的射频隐身雷达信号设计
收稿日期: 2015-07-02
修回日期: 2016-03-01
网络出版日期: 2016-03-17
基金资助
国家自然科学基金(11264031);南昌航空大学科研启动金(EA201504015)
Radio frequency stealth radar signal design based on OTR and SHT
Received date: 2015-07-02
Revised date: 2016-03-01
Online published: 2016-03-17
Supported by
National Natural Science Foundation of China (11264031);Nanchang Hangkong University Science Foundation (EA201504015)
为了提高雷达的射频(RF)隐身性能,结合最优匹配照射-接收机(OTR)理论与序贯假设检验(SHT)方法,提出了一种新的射频隐身雷达信号设计方法。通过发射信号了解外界环境信息,然后反馈这些信息给雷达系统,系统根据这些信息自适应设计雷达发射信号,形成一个闭环系统。以雷达目标识别为具体应用,实验仿真表明,设计的雷达信号自适应变化,减小了信号间的相关性,并且减少了照射次数,降低了辐射功率,从而实现了雷达系统的射频隐身性能。
关键词： 射频隐身; 最优匹配照射-接收机; 序贯假设检验; 自适应设计; 闭环系统
肖永生 , 周建江 , 黄丽贞 , 张向阳 . 基于OTR和SHT的射频隐身雷达信号设计[J]. 航空学报, 2016 , 37(6) : 1931 -1939 . DOI: 10.7527/S1000-6893.2016.0058
Combined with the optimum transmit-receiver (OTR) method and the sequential hypothesis testing (SHT) method, a new signal design method is proposed to improve the radar radio frequency (RF) stealth performance. The channel information is gained through the transmission waveform and fed back to the radar system, and the radar system adaptively designs the transmission waveform according to the channel information. It is a closed-loop system. The correlations between transmission waveforms are decreased because of the change of these transmission waveforms, and the number of illuminations is reduced for adopting the sequential hypothesis testing which lowers the transmission power of the radar system. The radar system using the new method possesses the radio frequency stealth performance. The simulation results of the target recognition application show the validity and feasibility of the method.
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