基于部分整周模糊度固定的非差GPS精密单点定位方法

doi:10.11947/j.AGCS.2015.20150056

测绘学报 ›› 2015, Vol. 44 ›› Issue (11): 1210-1218.doi: 10.11947/j.AGCS.2015.20150056

基于部分整周模糊度固定的非差GPS精密单点定位方法

潘宗鹏¹, 柴洪洲¹, 刘军², 董冰全¹, 刘鸣¹, 王华润¹

1. 信息工程大学地理空间信息学院, 河南郑州 450001;
2. 北京空间信息中继传输技术研究中心, 北京 100094

收稿日期:2015-02-02 修回日期:2015-05-10 出版日期:2015-11-20 发布日期:2015-11-25
作者简介:潘宗鹏(1990-),男,硕士生,研究方向为GNSS精密定位。E-mail:panzongpeng@yeah.net
基金资助:
国家自然科学基金(41274045;41374041)

GPS Partial Ambiguity Resolution Method for Zero-difference Precise Point Positioning

PAN Zongpeng¹, CHAI Hongzhou¹, LIU Jun², DONG Bingquan¹, LIU Ming¹, WANG Huarun¹

1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450001, China;
2. Beijing Space Information Relay and Transmission Technology Research Center, Beijing 100094, ChinaAbstract

Received:2015-02-02 Revised:2015-05-10 Online:2015-11-20 Published:2015-11-25
Supported by:
The National Natural Science Foundation of China(Nos.4127404541374041)

摘要/Abstract

摘要： 近年来,精密单点定位(PPP)模糊度固定技术不断发展,模糊度正确固定后可以提高短时间的定位精度。然而固定错误的模糊度,将引起严重的定位偏差,因此对PPP模糊度固定的成功率和可靠性进行研究很有必要。本文探讨了采用非差小数偏差(FCBs)改正的PPP模糊度固定方法;同时提出了一种分步质量控制的PPP部分模糊度固定(PAR)策略。通过欧洲CORS数据对该方法进行验证,结果表明:PPP模糊度固定可以提高小时解静态PPP定位精度。同时,采用部分模糊度固定策略,能够有效控制未收敛模糊度影响,提高用户端PPP模糊度固定成功率。

关键词: 精密单点定位, 模糊度解算, 质量控制, 成功率

Abstract: With the development of ambiguity resolution for precise point positioning(PPP) in recent years, it can improve positioning accuracy of PPP with short time observations since ambiguities can be fixed to right integers. However, unacceptable errors would be introduced into coordinate parameters if ambiguities are fixed to wrong integers. It's necessary to investigate the reliability and success rate of ambiguity-fixed PPP. This paper investigates PPP ambiguity fixing method based on zero-differenced fractional-cycle biases(FCBs). A partial ambiguity resolution(PAR) strategy based on cascaded quality control is proposed. Data sets from Europe CORS are used to validate and demonstrate PAR strategy. Results have showed that PPP ambiguity fixing can improve positioning accuracy of hourly PPP solution. When the strategy of PAR is applied, the influence of un-convergence ambiguities can be controlled efficiently and the success rate of PPP ambiguity fixing is improved.

Key words: precise point positioning, ambiguity resolution, quality control, success rate

中图分类号:

P228

潘宗鹏, 柴洪洲, 刘军, 董冰全, 刘鸣, 王华润. 基于部分整周模糊度固定的非差GPS精密单点定位方法[J]. 测绘学报, 2015, 44(11): 1210-1218.

PAN Zongpeng, CHAI Hongzhou, LIU Jun, DONG Bingquan, LIU Ming, WANG Huarun. GPS Partial Ambiguity Resolution Method for Zero-difference Precise Point Positioning[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(11): 1210-1218.

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基于部分整周模糊度固定的非差GPS精密单点定位方法

GPS Partial Ambiguity Resolution Method for Zero-difference Precise Point Positioning

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