应答着陆系统(简称TLS)采用相位干涉测角原理,由于要适用于野战环境,其多径效应的抑制显得非常重要;当多径信号不止一路或者与直达信号在角度上接近的话,传统的TLS多径抑制方法效果将变得很差;对TLS的天线阵元进行了重新分配后设计应用了一种新的测角算法———空间平滑MUSIC算法,仿真结果显示现有的TLS天线结构完全可以很好地运用这一算法,在多径环境下测角精度高,并且在结合基本先验知识后能完成多径信号的有效分辨。 The TLS system adopts the principle of phase interference angle measurement. It is very important to suppress the multipath effect because it is suitable for the field environment. When the multipath signal is more than one path or is close to the direct signal, the traditional TLS The effect of multipath suppression method will become very poor. After the reallocation of antenna elements of TLS, a new algorithm called the space smoothing MUSIC algorithm is designed and applied. The simulation results show that the existing TLS antenna structure is completely This algorithm can be used well, and the measurement accuracy of the multi-path environment is high, and the multi-path signal can be effectively resolved after combining the basic prior knowledge.