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随着军事技术的发展,对隐身飞机的探测需求日益增加。依据飞行目标在飞行过程中难以避免的放电现象,设计一套利用微弱静电放电信号探测飞行目标的技术。实验证实飞行器上安装的静电放电器可将剧烈的电晕放电转变成柔和稳定的“雨淋脉冲”放电,放电辐射的峰值功率下降约40dB。进一步采用匹配滤波二值法提高系统探测能力,根据实验和仿真计算,对-30~-10dBW的微弱放电辐射信号探测距离可达5.06~50.6km。
With the development of military technology, there is an increasing demand for the detection of stealth aircraft. Based on the unavoidable discharge phenomenon of the flight target in flight, a technique of detecting the flight target by using the weak electrostatic discharge signal is designed. Experiments confirmed that the electrostatic discharge device installed on the aircraft can convert a violent corona discharge into a gentle and stable “rain shower” discharge, and the peak power of discharge radiation is reduced by about 40 dB. The matched filtering binary method is further used to improve the detection ability of the system. According to the experiment and simulation calculation, the detection range of the weak discharge radiation signal of -30 ~ -10dBW can reach 5.06 ~ 50.6km.