摘要
在卫星导航中,抗干扰研究具有十分重要的意义。采用多重信号分类(MUSIC)算法对强干扰测向,得到干扰的波达方向,利用最小方差响应无畸变(MVDR)波束形成算法在干扰处形成零陷。由于算法在干扰处形成的零陷很窄,当干扰源和载体相对快速移动时,可能因干扰位置扰动而使自适应权和数据失配,导致算法失效。在均匀圆阵基础上,通过对圆阵的阵列结构进行角度扩展处理,提出一种零陷加宽技术,提高了算法的稳健性。仿真结果证明该方法的有效性。
In satellite navigation system,the study of anti-jamming is very important.In this paper,adopting multi-ple signal classify algorithm is to finding angel information for strong interference.Then the minimum variance distor-tionless response algorithm is used to realize interference rejection with DOA information.The adaptive algorithm can form narrow null in the direction of the jamming.When the interference moves quickly,it is possible that the weight mis-matches the data of measurement or the algorithm failed due to the perturbation of the interference location.Inferring the method of widing the nulling through expanding angel of uniform circular array,then the robustness of algorithm in-creased.It can work robustly when the interference move quickly.The result of simulation verify the efficiency of the proposed method.
出处
《电子测量与仪器学报》
CSCD
2010年第12期1082-1087,共6页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(编号:60977054)资助项目
国家重点实验室基金资助(编号:9140c3601010701)资助项目
