卫星信号的盲测向是使用阵列天线进行导航终端抗干扰的基础,为了解决该问题,文中利用每颗卫星对应C/A码的 唯一性进行解扩,提高了卫星导航信号的信噪比,采用多级维纳滤波分解得到的信号子空间代替ESPRIT算法中特征分解 得到的信号子空间,提出一种基于多级维纳滤波的ESPRIT算法来实现卫星导航信号测向的应用。仿真结果表明,该算法 不但能够实现卫星导航弱信号的测向,而且能够降低ESPRIT算法的运算量,具有更好的稳健性和测向性能。

Blind direction finding in navigational signal is the use of array signal terminal for anti-jamming, This paper puts forward a new ESPRIT arithmetic to estimate the direction of navigational signal based on multi-winner filter . In order to solve the problem of blind survey in navigational signal's direction, the new ESPRIT arithmetic dispreading the C/ A code of each satellite by its uniqueness, improve the SNR, make the signal-subspace analyzed by multi-winner filter instead of the one by ESPRIT arithmetic. The result shows that the new method could inspect the DOA of puny signal and reduce the complexity of operation by ESPRIT arithmetic, has better steadiness and direction finding characteristic.