电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2015年
7期
792-796
,共5页
卫星导航接收机%空时联合抗干扰%矩阵求逆%功率倒置算法
衛星導航接收機%空時聯閤抗榦擾%矩陣求逆%功率倒置算法
위성도항접수궤%공시연합항간우%구진구역%공솔도치산법
satellite navigation receiver%space-time anti-jamming%matrix inversion%power inversion algorithm
针对卫星导航接收机易被干扰的特点，研究了空时联合抗干扰算法，并提出了一种简化的复正定厄米矩阵求逆实现方法。首先，给出了空时联合抗干扰算法的基本模型。随后，在详细分析传统复正定厄米矩阵求逆算法基础上，给出了改进的复正定厄米矩阵求逆方法的具体步骤。最后，基于数字信号处理( DSP)的硬件平台，对运算量进行了对比分析。仿真结果表明，改进的复正定厄米矩阵求逆方法加法和乘法运算量都大幅度降低，比传统算法运算速度加快了三分之一。算法简单可靠，易于实现，适用于工程应用中实时性要求较高的场合。
針對衛星導航接收機易被榦擾的特點，研究瞭空時聯閤抗榦擾算法，併提齣瞭一種簡化的複正定阨米矩陣求逆實現方法。首先，給齣瞭空時聯閤抗榦擾算法的基本模型。隨後，在詳細分析傳統複正定阨米矩陣求逆算法基礎上，給齣瞭改進的複正定阨米矩陣求逆方法的具體步驟。最後，基于數字信號處理( DSP)的硬件平檯，對運算量進行瞭對比分析。倣真結果錶明，改進的複正定阨米矩陣求逆方法加法和乘法運算量都大幅度降低，比傳統算法運算速度加快瞭三分之一。算法簡單可靠，易于實現，適用于工程應用中實時性要求較高的場閤。
침대위성도항접수궤역피간우적특점，연구료공시연합항간우산법，병제출료일충간화적복정정액미구진구역실현방법。수선，급출료공시연합항간우산법적기본모형。수후，재상세분석전통복정정액미구진구역산법기출상，급출료개진적복정정액미구진구역방법적구체보취。최후，기우수자신호처리( DSP)적경건평태，대운산량진행료대비분석。방진결과표명，개진적복정정액미구진구역방법가법화승법운산량도대폭도강저，비전통산법운산속도가쾌료삼분지일。산법간단가고，역우실현，괄용우공정응용중실시성요구교고적장합。
For the shortcoming that the satellite navigation receiver is easy to be interfered,a joint space-time method is researched and an improved complex Hermitian positive definite matrix inversion method is proposed based on matrix inversion part. First,the joint space-time method is presented. Second,according to the analysis of the traditional Hermitian positive definite matrix inversion method,an improved method is proposed,and the detailed process is given. Finally,the computations of addition,multiplication,division are compared based on Digital Signal Processing( DSP) hardware platform. Simulation results show that the computation of the improved method is significantly reduced. The improved method is simple,reliable,and easy to implement and can be applied in engineering applications where real-time requirement is strict.
