摘要
GPS初始整周模糊度的求解是利用载波相位进行测量时的关键问题。采用了对系数矩阵进行QR分解的方法,用以降低矩阵的维数。模糊度搜索时,针对Z变换可能会引入多余误差,采用了对称三角分解法对协方差矩阵进行去相关处理。实验与仿真结果表明,定位误差在0.5 cm以内,方位角和仰角误差在0.1°以内。
The solution of using carrier phase. A method initial of QR ambiguity of whole cycles of GPS is a key issue in measurement by decomposition is applied to decompose the observation matrix of sat-ellites, so as to decrease dimensions of the matrix. Symmetry triangle decomposition is used for searching for integer ambiguity as Z transform may engender error. Simulation results indicate that the position error is within 0.5 m and the azimuth angle and elevation angle errors are within 0.1 °.
出处
《现代防御技术》
北大核心
2013年第4期27-31,共5页
Modern Defence Technology
基金
国家自然科学基金(61203201)
陕西省自然科学基金(2012JQ8017)
关键词
全球定位系统
载波相位测量
整周模糊度
QR分解
对称三角分解
global position system （GPS）
carrier phase measurement
integer ambiguity
QR de-composition
symmetry triangle decomposition
