摘要
探测与修复周跳是GPS数据处理中的一个关键问题。针对GPS载波相位定位中出现的周跳问题,本文提出了一种新的周跳探测与修复的方法:首先组成双差相位观测方程,并根据观测文件中的近似坐标求得基线约束条件;随后利用基线约束条件直接求解各个历元的模糊度值,并依据历元间的模糊度变化来探测与修复周跳。通过编写应用程序和实例验证表明这种方法是有效且实用的。
Detection and recovery of cycle-slip is a key issue for GPS data processing. To the problem of cycle slips in OPS carrier phase positioning, this paper presented a new method of cycle slips detection and recovery ： First of all, the double difference phase observation equation was composed, and the baseline constraints were obtained through the approximate coordinates in observing files; second, each epoch ambiguity value was obtained directly by the baseline constraints; then detected and recovered the cycle slips ac- cording to the basis of inter-epoch ambiguity changes. The written applications and the verification of example in this paper showed that the method was effective and practical.
出处
《测绘科学》
CSCD
北大核心
2011年第2期76-77,共2页
Science of Surveying and Mapping
关键词
探测与修复
周跳
GPS
基线约束
模糊度
detection and recovery
cycle-slip
GPS
baseline constraint
ambiguity
