线性相位的GNSS接收机空时干扰抑制算法

Algorithm of linearly phased space-time interference suppression for GNSS receiver

针对空时自适应抗干扰引起的GNSS信号失真问题,提出了一种能够减轻信号失真的GNSS接收机空时处理干扰抑制算法.首先推导了用于GNSS接收机干扰抑制空时处理结构的等效时域滤波器,分析了空时处理对GNSS信号的影响;然后提出了一种具有线性相位特性的空时处理干扰抑制算法;最后进行了仿真.仿真结果表明,该算法在不影响干扰抑制性能的前提下能够明显改善空时处理对GNSS信号带来的影响.

Aimed at the problem of GNSS signal distortion induced by the space-time adaptive anti-jamming,a space-time processing interference suppression algorithm is proposed for reducing the GNSS receiver signaldistortion. In this paper, an equivalent time-domain filter is deduced for the spece-time processing configuration ofthe GNSS receiver interference suppression, the impact of space-time processing on the GNSS signals analysed,then an algorithm proposed for inreference suppression with the linearly phased space-time processing, andfinally, the simulation is performed. Simulation results show that this proposed algorithm can improve greatly theinfluence of space-time processing on the GNSS signals without degrading the performance on interferencesuppression.