GPS周跳探测的方法研究

¹同济大学测量与国土信息工程系,上海市四平路1239号,200092;²南京工业大学土木工程学院,南京市中山北路200号,210009;³现代工程测量国家测绘局重点实验室,上海市四平路1239号,200092

基金项目: 国家863计划资助项目(2007AA12Z345)

详细信息

Cycle Slip Detection of GPS Data

¹Department of Surveying and Geo-informatics,Tongji University,1239 Siping Road,Shanghai 200092,China;²College of Civil Engineering,Nanjing University of Technology,200 North Zhongshan Road,Nanjing 210009,China;³Key Laboratory of Advanced Engineering Survey of SBSM,1239 Siping Road,Shanghai 200092,China

Funds: 国家863计划资助项目(2007AA12Z345)

摘要: 在分析Blewitt方法的基础上,加入一种新的方法共同探测周跳。新方法将无电离层组合作为基本观测值,对其进行星间差分,差分结果消除了电离层延迟和接收机钟差的影响,而且差分后的组合观测值具有良好的光滑性,有利于周跳的探测。实验证明,3种方法共同使用可以更准确地探测出周跳发生的位置。
- 周跳探测 /
- 无电离层组合 /
- 星间差分
Abstract: On the basis of the theory of Blewitt,a new method is introduced.The new method uses the ionosphere-free combination LC.Differencing LC data between pairs of satellites is not effective to the ionospheric delay and receiver clock variations.Therefore it is useful for cycle slip detection.The wide-lane combination,the ionospheric combination and satellite difference of the ionosphere-free combination are all used to detected cycle slip.The results show that the combination of the three methods can accurately detect cycle slip.
- cycle slip /
- ionosphere-free combination /
- satellite difference