北斗卫星导航空时抗干扰技术研究磁

摘要

传统的阵列抗干扰技术的主要问题是自由度有限、对多径干扰处理困难，空时抗干扰技术相对于时域、空域、频域等抗干扰方法有更多优势。在不增加阵元的条件下，空时抗干扰技术增加了空域自由度，提高了抗干扰性能。论文分析了空时抗干扰技术的基本原理，并进行了空时抗干扰算法仿真。仿真结果证明：空时抗干扰技术能抑制多个宽带、窄带干扰信号，可以提高抗干扰性能。%Need of freedom degrees and incapability under multipath circumstances are the main problems of the tradi‐tional array anti‐jamming technology .Space‐time anti‐jamming technique shows many advantages compared with time ,space or frequency field anti‐jamming methods .It greatly increases freedoms of degree and ability to suppress interferences on the situation that the number of array elements is unchanged .The principle of space‐time anti‐jamming technology is analysed , and the algorithm is simulated .The simulation results show that several wideband and narrowband interferences can be sup‐pressed ,and anti‐jamming performance is greatly improved .