基于微弱静电放电信号探测飞行目标

Aircraft detection by faint discharge signal

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 the military technology, the demand for the stealth aircrafts detection is increasing. A system is designed to detect aircraft by the faint discharge signals, which are unavoidable during the flight process. The experiments show that the electro-static dischargers （ESDs）, which are fixed on the air- crafts, could turn the initially intense corona discharge into a soft and stable ＂rain pulse＂ discharge, while the ESD could decrease the peak power of discharge radiation by about 40 dB. Furthermore, the binary method after matched filtering is designed to enhance the detection ability of the system. is 5.06 to 50.6 km when the peak power of the discharge signal By experiments and simulation, the detectable range is -30 to -10 dBW.