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Pseudo-random frequency hopping fuze technology based on signal reconstruction

机译：基于信号重构的伪随机跳频引信技术

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摘要

To solve the problems of poor fixed distance precision and difficult engineering implementation of the pseudo-random frequency hopping fuze, a new signal processing method for the fuze based on signal reconstruction is proposed in this study. First, the transmitted signal is used to generate a set of local reference signals for the matched filter. Then all the local reference signals are applied to coherent integrate with the reflected echo, respectively. Finally, any channel of these correlation peak values exceeding the presupposed threshold can be taken as fixed distance successfully. Furthermore, the relative speed between the missile and target can be approximately estimated by the corresponding channel number. The simulation results show that the method can detect the target precisely, which means that the problem of mismatched filter has been solved. Moreover, the method is easy to be implemented, which can greatly improve real-time property of the fuze, thus it has practical value for engineering application.
机译：为解决伪随机跳频引信固定距离精度差，工程实现困难的问题，提出了一种基于信号重构的引信信号处理新方法。首先，传输的信号用于为匹配的滤波器生成一组本地参考信号。然后，将所有本地参考信号分别与反射回波进行相干积分。最后，这些相关峰值的任何通道超过预设阈值都可以成功地作为固定距离。此外，导弹和目标之间的相对速度可以通过相应的通道数来近似估计。仿真结果表明，该方法能够准确地检测出目标，解决了滤波器不匹配的问题。而且，该方法易于实现，可以大大提高引信的实时性，对工程应用具有实用价值。

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