三维时差频差定位算法研究  

Research on Three-dimensional TDOA-FDOA Location Algorithm

作　　者：杨书玲[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2013年第7期15-16,64,共3页Radio Engineering

摘　　要：针对目前双机时差频差算法二维定位精度低的问题,提出了一种三维空间双机时差频差定位算法。建立了三维空间中时差方程、频差方程和地球椭球方程的定位方程组,利用高斯—牛顿迭代法求解目标的位置。理论分析了三维空间中双机时差频差定位算法的几何稀释精度(GDOP),仿真试验分析了时差误差和频差误差对定位的影响,验证了三维空间双机时差频差定位算法能够满足工程实践的定位需求。A three-dimensional TDOA-FDOA location algorithm with dual-aircraft is proposed in this paper to solve the problem of low precision in two-dimensional TDOA-FDOA location algorithm.Firstly,the position is determined by solving a group of equations of TDOA,FDOA and earth ellipsoid through Gauss-Newton algorithm.Secondly,the GDOP of three-dimensional TDOA-FDOA location algorithm with dual-aircraft is particularly analyzed and simulation is performed to analyze the influence of TDOA-FDOA errors.The simulation results show that the three-dimensional TDOA-FDOA algorithm can meet the location precision requirement.

关 键 词：TDOA-FDOA 高斯牛顿法 GDOP 三维定位 

分 类 号：TN911[电子电信—通信与信息系统]