The Strengthened Signal Optimal Algorithm with Adaptive Orthogonal Jammer Constraint Used in Navigation Receivers of Two Satellites
LU Yan-e1,3, TAN Zhan-zhong1, YANG Jun2, DING Zi-ming1, ZHENG Yu-gui1
1. The School of Electronics & Information Engineering,Beihang University,Beijing 100083,China;2. The School of Management,Huazhong University of Science Technology,Wuhan,Hubei 430074,China;3. The College of Telecommunication Engineering, The Air Force Engineering University,Xi'an,Shaanxi 710077,China
Abstract：A strengthened signal Optimal Algorithm with Adaptive Orthogonal Jammer Constraint (OAAOJC) is proposed,which can be used in the anti-jamming of the the Navigation Receivers of Two Satellites.This algorithm eliminates the jammers and receives two satellite signals through determining the Orthogonal Jammer Subspace(OJS) and the quiescent weight vector(the weight vector under the condition of no jammers) and projecting the quiescent weight vector onto OJS.To calculate the quiescent weight vector,the strengthened signal optimal algorithm with equal SNR is presented,which can make the CRPA with small diameter from two beams in directions of the two satellites in condition of no jammer.In order to obtain OJS,the MUSIC algorithm is introduced and the threshold which is used to distinguish the jammer subspace and OJS is given through analyzing the effect of the sampling number and the CRPA 's inconsistency on the perturbation of the minimum eigenvalue.This algorithm is characterized by stable voltage output,microsecond level update ratio of the weight vector and large jammer-eliminating-ratio with certain gains for satellite signals.
卢艳娥;谈展中;杨 军;丁子明;郑玉簋. 用于双卫星导航系统用户接收机抗干扰的自适应 干扰正交约束下的最佳信号增强算法[J]. 电子学报, 2004, 32(8): 1239-1243.
LU Yan-e;TAN Zhan-zhong;YANG Jun;DING Zi-ming;ZHENG Yu-gui. The Strengthened Signal Optimal Algorithm with Adaptive Orthogonal Jammer Constraint Used in Navigation Receivers of Two Satellites. Chinese Journal of Electronics, 2004, 32(8): 1239-1243.
2004, Vol. 32 
