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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。
In order to improve the radio frequency (RF) stealth performance of radar, a new design method of RF stealth radar signal is proposed based on OTR theory and sequential hypothesis testing (SHT). By transmitting signals to understand the external environment information, and then feedback the information to the radar system, the system adaptively design the radar transmit signals based on these information to form a closed-loop system. The radar target identification is used as a specific application. The experimental simulation shows that the designed radar signals are adaptively changed to reduce the correlation between signals, and reduce the number of irradiation and the radiation power, so as to achieve the radio frequency stealth performance of the radar system.