雷达反隐身的若干问题与技术途径

On Radar Anti-Stealth Techniques and Its Problems

本文通过将飞行器雷达隐身的基础归结为使飞行器雷达截面积(RCS)减缩20～30dB和使雷达难以对其进行连续跟踪这两点,指出了雷达反隐身的若干难点。从抑制飞行器 RCS 下降和提高雷达灵敏度的观点出发,讨论了两类雷达的反隐身问题及其技术途径。它们具体包括频域、空间域和极化域的反隐身技术,基于雷达目标回波信号特征检测的微弱信号检测技术等。

On the basis of the facts that aircraft stealth to radar is based on reducing radar cross-section (RCS)of an aircraft by 20～30 dB and making it very difficult for radar to track an aircraft continuously, a few difficult points about radar anti-stealth techniques are pointed out.Also,two classes of radar anti- stealth techniques and methods based on suppressing the reduction of RCS of a stealth aircraft and improving the detection sensitivity of radar systems are discussed.Specifically,these techniques include frequency-do- main,spatial domain,polarization domain anti-stealth methods and weak signal detection techniques based on the detection of radar target return signatures.