摘要
周跳的探测与修复是GPS高精度实时定位的关键问题。针对目前大部分方法对小周跳的探测与修复不灵敏、不适用于动态接收机的问题。首先用三差法将载波相位进行处理,减少待解的未知参量,而后用卡尔曼求解三差观测量的方差和修正数向量对周跳进行探测与修复。实测数据仿真和分析的结果表明,该方法适用于单频、高动态接收机,可以快速、准确地探测与修复周跳。
Detection and reparation about cycle slip are the key problems of GPS high precision and real time positioning. Aimed at the most method that is not sensitivity for detection and reparation about small cycle slip and not applicability to the dynamic receiver. Firstly,carrier wave phase is treated with the triple difference algorithm to reduce the unknown parameter,then,the detection and reparation about cycle slip is done with the variance and reparation vector of triple difference observation,which are calculated with Kalman filter method. At last,the method is analyzed with the real data,and simulated with the Matlab. As can be seen from the simulation result,this method is applicable to the single frequency and high dynamic receiver,and can be used to detect and repair the cycle slip quickly and accurately.
出处
《科学技术与工程》
2010年第32期7886-7889,共4页
Science Technology and Engineering
基金
西省自然科学基金(SJ08F11)项目资助
关键词
周跳
卡尔曼滤波
三差法
cycle slip Kalman filter triple difference algorithm
