摘要
针对GPS载波相位定位中出现的周跳问题,提出一种新的周跳探测方法。基于非差相位观测值线性组合模式,以相位与伪距差法和电离层残差法相结合来探测与修复周跳。通过对同一组无周跳的数据采取人为加入周跳,比较两种周跳探测与修复方法的优缺点,以相位与伪距之差组合为辅助,检查大周跳,用电离层残差组合方法再对双频GPS数据进行进一步的周跳探测和修复。根据实例分析,验证该方法能够快速有效地探测并修复周跳,使双频载波相位法更具有实用性。
A new method of cycle slips detection is carried for the cycle slips raised in the orientation of GPS carrier phase.Combination of the phase reduce false distance law and the ionized layer remnant method of difference is used to detect and recover cycle slips based on the linearly combinational models of un-differenced phase observations.The two different methods are compared by adding cycle slips into data without cycle slips artificially,and big cycle slips are examined based on the difference between phase and false distance.The cycle slips in data of the dual frequency carrier phase are detected and recovered by the combinational method of ionized layer difference.The example verifies that the method can detect and recover cycle slip quickly and effectively and make the dual frequency carrier phase have more practicability.
出处
《测绘工程》
CSCD
2010年第6期31-34,共4页
Engineering of Surveying and Mapping
基金
中英科技创新计划资助项目(2009DFA22670)
关键词
GPS
载波相位
周跳
电离层残差
GPS
carrier phase
cycle slips
ionized layer difference
