The Target Detection Based On Multi-channel Signal Processing

Owing to the rapid improvement of social information and network,high-tech weapons and equipment have developed significantly.More specifically,in modern battlefields,the diversification of aerial weapons and equipment have become more complex.Attacking weapons cannot simply use infrared fuzes to attack targets by using after-tail attack.Therefore,it has become an increasingly important topic that research on combat missions through the cooperation of radar proximity fuzes and directional warheads in the study of air-to-air ammunition fuses.Based on the design of pulsed Doppler radar fuses,the paper designs a target detection system with multiple channels of signal processing by using the technology of conformal arrays.The main content of this article includes:Firstly,the current overall development background and engineering application advantages of conformal arrays are introduced.According to the characteristics of the general air-to-air ammunition projectiles using cylindrical profiles,the signal model and the directional function of the circular array and the cylindrical array are analyzed successively.Based on this,it will prepare for the follow-up array signal processing analysis.Secondly,the two main array signal processing algorithms in current signal processing technology are summarized.The Spatial Spectrum estimation algorithm and Beam Forming algorithm are described successively.According to the shadowing effect of the cylindrical body,an algorithm suitable for the signal processing of the cylindrical conformal array is selected for each of the two algorithms.Finally,by analyzing the status of target detection and the development of pulsed Doppler fuze,combined with the related content of conformal array and array signal processing algorithms,the paper proposes an overall design of a multi-channel signal processing target detection system with nine antenna arrays distributed uniformly around the shell.By combining the conformal array with the fuse and the analysis of the multiple echo signals,the design greatly improves the accuracy of the detection of the target azimuth by the fuze.At the same time,it elaborated the design of the system’s overall workflow,frequency synthesizers,the transmission and reception module of the fuse pulse signal,and the signal processing system module.According to the conformal signal model and signal processing method of the uniform circular array established in the paper,the verification of the algorithm direction is verified and analyzed,and the feasibility of the design scheme is determined.