水雷主动声引信低截获特性分析

Low probability analysis of interception of underwater mine active fuze

从声纳方程和信号检测两方面分析了主动声引信实现低截获的可行性和技术途径。数据仿真表明,接收机检测阈在6 dB以下,有数量级为104以上的信号长度,发射波形为随机形式时,水雷主动引信实现低截获特性是可行的。

Low probability of interception by sonar and technological means were studied based on the sonar equation and theory of signal detection. The idea of low probability of intercept was applied to resolving the problems such as system capabilities, safety, high transmitter power consumption, and stealth of active fuze of mine. Simulations indicate that in order to get LPI, the active fuze detection threshold should be below 6 dB, and the signal length should be bigger that 104, and the sending waveform should be random.