摘要
周跳的探测一直是GPS高精度定位的研究热点。特别对于动态相对定位,若整周模糊度初始化过程中载波相位观测值发生周跳,将严重影响整周模糊度的确定。本文通过分析组合载波相位观测值和伪距观测值的特性,提出了一种利用基于相对定位中的双频周跳自动改正方法。通过对静态和动态实测数据的分析,证明了该方法能有效探测并修复周跳。
Cycle slip detection has been always on the focus of GPS precise positioning. Especially in kinematics differential GPS, in would be difficult to determine the integer ambiguity if cycle slip was happened to carrier phase measurement during the ambiguity initialization. By analyzing the carrier phase and pseudo range measurements, a method based on double frequency differential GPS positioning is proposed in this paper. A test including static and kinematics data is carried out, and it proves that this method is effective in cycle slip detection and correction.
出处
《工程勘察》
CSCD
北大核心
2008年第2期43-45,56,共4页
Geotechnical Investigation & Surveying
基金
国家自然科学基金资助(40674003).
关键词
GPS
周跳
相对定位
GPS
cycle slip
differential positioning
