中文摘要：

随着电磁环境越来越复杂,全球卫星导航系统（GNSS）受到的干扰越来越多。基于均匀间距阵列的抗干扰算法已广泛运用于GNSS干扰抑制中,但是均匀线性阵列抑制干扰的性能受到天线阵元个数和阵列孔径的严格限制。本文提出了一种基于联合互质阵列的卫星导航抗干扰算法,能够在不增加阵元的情况下获得较大的阵列孔径,提高了干扰来向估计性能且不需要知道干扰个数。该方法首先利用互质阵列的空间谱估计方法估计出干扰来向,然后,利用估计出的干扰来向构造干扰子空间,并通过正交子空间投影算法抑制干扰。算法提高了卫星导航系统的抗干扰性能,仿真实验验证了该算法的有效性。

英文摘要：

With the more complex electromagnetic environment,Global Navigation Satellite System（ GNSS） receivers were interfered more and more seriously. The interference suppression algorithms based on the uniform array have been widely used in GNSS anti-jamming technology. However,the interference suppression performance of the uniform linear array is strictly limited by the number of array elements. This paper proposed an interference suppression algorithm based on coprime array. It can obtain a larger array aperture in the case of the same element number of uniform array,improve the performance of direction of arrival（ DOA） estimation while it does not need to know the number of the interference. The proposed method uses the sparse spatial spectrum estimation method to estimate the DOA of interference. Then the interference subspace is formed based on the estimated DOAs of interference,and orthogonal subspace projection algorithm is used to suppress interference. The simulation results verify the effectiveness of the proposed algorithm.