中文摘要：

针对电子战截获接收机不能适应复杂战场电磁环境的实际情况,分析了接收信号造成非完整性的具体原因,根据非完整信号截获时间起点变化和谱泄漏的实际情况,首先采用基于分段加窗自相关的方法对非完整信号的初始相位进行了校正,然后再通过波形模式匹配的方法搜索整周期的起止点,其次在起止点已知的基础上对信号采取整周期重采样或收发时长调整的两种方式建立非完整信号自适应的动态截获模型。最后通过仿真实验给出了该算法对典型LPI雷达LFM信号的实现效果,表明其能够有效改善现有电子战截获接收机系统中信号截获时间起点限制和频谱泄露造成的信号能量缺失对后续处理性能的影响,较好地解决了现代战场电磁环境下的复杂信号缺失问题。

英文摘要：

For EW intercept receiver cannot adapt to the complex battlefield electromagnetic environment of the actual situation,the specific reasons of non integrity caused by the received signal is analyzed. According to intercepted time starting changes of nonholonomic signal and situation of spectral leak,signal initial phase of nonholonomic signal is corrected by autocorrelation method based on segmentation windowed. The starting and ending points of the entire cycle are searched through the waveform pattern matching method. Nonholonomic signal adaptive dynamic interception model is established for two ways of signal resampling in full period and adjusting of sending and receiving time. Effect of the algorithm to typical LPI radar LFM signal is given by simulation experiment. The results show that influence of the algorithm to the performance of subsequent processing are effectively improve,including the starting point time limit of the existing EW intercept receiver system in signal interception and the loss of signal energy caused by spectral leakage. The modern battlefield electromagnetic environment of complex signal loss problem is solved.