一种基于正弦波高精度互模糊函数的通信卫星干扰定位技术

通信卫星系统易遭到敌方恶意干扰、地面无意干扰，对通信卫星系统的干扰排查具有重要意义，而通信卫星系统的干扰定位一直是重难点问题。在双星定位互模糊函数算法的基础上，提出了一种基于正弦波高精度互模糊函数频差估计方法，同时针对利用两颗静止通信卫星实现干扰定位时主信号和辅助信号信噪比差异大、辅助信号微弱的问题，采用改进的互模糊度函数实现双星TDOA和FDOA的测量，完成对通信卫星系统干扰信号的定位。仿真试验表明，采用本算法，对通信卫星系统干扰信号的定位精度较高，满足系统实际运用要求。

A communication satellite jamming positioning technology based on sine wave high-precision mutual ambiguity function

Communication satellite system is vulnerable to hostile interference and unintentional ground interference, which is of great signification to the interference investigation of communication satellite system, and the interference positioning of communication satellite system has always been a key and difficult problem. Based on the double satellite positioning mutual ambiguity function algorithm, a high precision mutual ambiguity function of sine wave is proposed in this paper. At the same time, aiming at the problem of large difference in signal and auxiliary weak auxiliary signal when using two static communication satellites to realize interference positioning. The improved mutual ambiguity function is used to realize the measurement of double satellite TDOA and FDOA, completing the positioning of interference signals of communication satellite system. Simulation results show that the proposed algorithm is had high positioning accuracy for interference signals of communication satellite system and met the requirements of practical application of the system.