摘要
随着我国北斗二代卫星导航系统的建设与发展,在各领域的应用越来越广泛,定位精度要求也越来越高。为了提高卫星导航系统的定位精度和稳定性,对原有的定位解算算法进行优化处理。首先分析了现有的定位解算算法、定位误差,对误差修正方法进行了仿真分析并提出了改进型加权最小二乘法,运用卫星测距误差权矩阵和卫星噪声权矩阵进行拟合得到最终的加权矩阵,以提高定位精度。仿真结果表明,优化后的加权最小二乘算法提高了北斗二代卫星导航系统的定位精度和稳定性。优化后定位结果能更好的满足各行业用户的定位需求。
With the construction and development of BeiDou -2 satellite navigation system, it is more and more widely used in various fields, and higher positioning accuracy is required. To improve positioning precision, the original positioning algorithm must be optimized. First, we analysed the existing positioning algorithms, deviation of position and method of error correction based on simulation, presented an improved method of weight least square, and used satellite locating error weighting matrix and satellite noise weighting matrix to fit the final weighting matrix and improve the positioning accuracy. Simulation results show that the improved weighted least squares algorithm can improve the positioning accuracy and stability of Beidou - 2 satellite navigation, and the optimized positioning resuhs can better meet the needs of different users.
作者
邹绪平
王相军
ZOU Xu - ping WANG Xiang - jun(Merchant Marine College, Shanghai Maritime University,Shanghai 201306, China Shanghai Rock Financial Information co. ,LTD,Shanghai 200050 ,China)
出处
《计算机仿真》
北大核心
2017年第6期80-83,360,共5页
Computer Simulation
关键词
北斗二代
卫星导航
定位解算
算法
Beidou - 2
Satellite navigation
Positioning algorithm
Algorithm
