周跳探测中一种改进的电离层残差法  

Improvement of ionospheric residual method in cycle slip detection

作　　者：卢祥[1] 何骞[1] 刁锦通[1] 

机构地区：[1]广州市城市规划勘测设计研究院,广东广州510000

出　　处：《测绘工程》2016年第1期17-20,共4页Engineering of Surveying and Mapping

摘　　要：高精度GPS定位的核心问题之一是周跳探测,针对电离层残差法不能较好适用于低采样率情形的不足,提出基于站间单差观测值的电离层残差法。在短基线中,利用站间单差较大地消弱电离层的影响,所提方法能弥补电离层残差法不能较好适用于高采样率情形的不足。利用实测数据实验证明,改进的电离层方法在采样间隔为30s时同样适用,可以将周跳显著地分离。One of the core problems of high precision GPS positioning is the cycle slip detection.For ionospheric residual method cannot use in low sampling rate situation,an improvement is proposed based on a single difference between stations.In short baseline,the difference between stations greatly weakens the influence of the ionosphere,and the proposed method can compensate for ionospheric residual method＇s deficiencies.Using the measured experimental data,it shows that the improved method is applicable in 30 s sampling interval,which can significantly seperate the cycle slips.

关 键 词：电离层残差法 站间单差观测值 周跳探测 

分 类 号：P228[天文地球—大地测量学与测量工程]