基于压缩感知的卫星干扰源定位  

Satellite Interference Localization Based on Compressive Sensing Theory

作　　者：赵宏伟[1] 刘波[1] 谢广钱[1] 刘恒[1] 

机构地区：[1]西安空间无线电技术研究所,西安710100

出　　处：《电讯技术》2015年第5期467-471,共5页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61201089)~~

摘　　要：针对传统测向方法实际应用性能较差的问题,提出了一种基于压缩感知的卫星干扰源定位方法。根据干扰信号方位角的空间稀疏性,建立了波达方向(DOA)估计模型,构造出基于阵列流型的过完备原子库和随机单位向量测量矩阵,最后结合信源估计技术和正交匹配追踪(OMP)算法实现干扰目标的方位估计。仿真验证了该方法能同时估计相干干扰信号的强度和角度,适合快速变化的干扰目标定位,并且具有较低的计算复杂度和更好的工程易用性。相关研究对压缩感知理论在卫星干扰源定位中的应用具有一定参考意义。The conventional direction finding methods have poor performance in the actual application. A satellite interference localization method based on the compressive sensing（ CS） theory is proposed. Based on the interference signal angle’s sparseness in angle space,the corresponding direction of arrival（ DOA） model,and the over-complete dictionary of atoms and measuring matrix by randomly sampling unit vector are constructed. Combined with the source estimation technology,the estimation using orthogonal matching pursuit（ OMP） algorithm is obtained. The simulation results show that the method can estimate simultane-ously the coherent signal amplitude and bearing and is suitable for the rapidly moving interference targets. It has smaller computational load and better engineering usability. Research in this paper promotes the ap-plication of compressive sensing in satellite interference localization.

关 键 词：卫星干扰源定位 波达方向估计 压缩感知 正交匹配追踪 

分 类 号：TN975[电子电信—信号与信息处理]