基于扩频的雷达通信一体化信号的设计

摘要

为应对日益复杂的电磁环境，作战平台不得不配备越来越多的电子设备，这无疑会增大作战平台体积，增加彼此之间的干扰。为解决这一问题，一种最为有效的途径就是实现作战平台的一体化。基于信号共享的思想，设计了一种基于 MSK（最小频移键控）直接序列扩频的雷达通信一体化信号，并分别从频谱以及雷达模糊函数的角度对其进行了深入分析。理论分析表明，所设计的一体化信号具有恒包络、频谱利用率高、低截获概率以及可用于实现多址通信等众多优点。仿真结果表明，该一体化信号具有近似图钉形的模糊函数，可用于实现雷达与通信的一体化。%In the face of increasingly complicated electromagnetic environment,combat platform has to be equipped with more and more electronic equipment,which undoubtedly increases the combat platform size and the interference between each other.To deal with this problem,one of the most effective ways is to im-plement a integrated combat platform.Following the principle of signal sharing,a integrated radar-communi-cation signal is designed based on MSK direct sequence spread spectrum.Then the spectrum and radar ambi-guity function of the integrated signal are analyzed.Theoretical analysis indicates that the integrated signal not only has a constant envelope and higher spectrum efficiency,but also has a lower intercept probability and can be used to implement multiple access communication.The simulation results show that the integrated signal has a approximate thumbtack ambiguity function,which makes it suitable to implement the integration of radar and communication.