BDS网络RTK参考站三频整周模糊度解算方法

doi:10.11947/j.AGCS.2017.20160179

测绘学报 ›› 2017, Vol. 46 ›› Issue (4): 442-452.doi: 10.11947/j.AGCS.2017.20160179

BDS网络RTK参考站三频整周模糊度解算方法

高猛¹, 徐爱功¹, 祝会忠¹, 葛茂荣^1,2, 杨秋实¹

1. 辽宁工程技术大学测绘与地理科学学院, 辽宁阜新 123000;
2. 德国地学研究中心, 波茨坦 14473

收稿日期:2016-04-22 修回日期:2017-02-01 出版日期:2017-04-20 发布日期:2017-05-05
通讯作者: 徐爱功 E-mail:xu_ag@126.com
作者简介:高猛(1988-),男,博士生,研究方向为高精度GNSS定位算法与研究。
基金资助:
国家重点研发计划（2016YFC0803102）；国家自然科学基金（41504010；41474020；41504030）；国家863计划（2014AA123101）；辽宁省高等学校创新团队项目（LT2015013）；辽宁省博士启动基金（20141141；201501126）

The Algorithm of Triple-frequency Ambiguity Resolution between BDS Network RTK Reference Stations

GAO Meng¹, XU Aigong¹, ZHU Huizhong¹, GE Maorong^1,2, YANG Qiushi¹

1. School of Geomatics, Liaoning Technical University, Fuxin 123000, China;
2. German Research Center for Geosciences, Potsdam 14473, Germany

Received:2016-04-22 Revised:2017-02-01 Online:2017-04-20 Published:2017-05-05

摘要/Abstract

摘要： 北斗卫星导航系统是目前唯一一个全星座提供三频观测数据的卫星导航定位系统，三频观测值有助于载波相位整周模糊度的快速、准确固定。本文提出了一种BDS网络RTK参考站三频整周模糊度解算方法。首先利用B2、B3频率的观测值及严格的模糊度固定标准确定超宽巷整周模糊度，将固定的超宽巷整周模糊度与其他宽巷整周模糊度的线性关系作为约束条件，然后估计宽巷整周模糊度、相对天顶对流层延迟误差和电离层延迟误差，并搜索确定宽巷整周模糊度。利用固定的宽巷整周模糊度与三频载波相位整周模糊度的整数线性关系，将线性关系加入载波相位整周模糊度参数估计观测模型中，然后确定载波相位整周模糊度。使用实测的CORS网BDS三频观测数据进行算法验证，结果表明，该方法可正确有效地实现参考站间三频载波相位整周模糊度的快速解算。

关键词: BDS, 网络RTK, 三频, 整周模糊度, 相对天顶对流层延迟误差, 电离层延迟误差

Abstract: BeiDou navigation satellite system is currently the only system which the whole constellation offers triple-frequency observation data, triple-frequency observation is conducive to carrier phase ambiguity fixing quickly and accurately. The algorithm of triple-frequency integer ambiguity resolution between BDS network RTK reference stations is proposed. The observation of B2 frequency and B3 frequency and the strict criterion of ambiguity fixing are used to determine extra-wide-lane integer ambiguity. The linear relationship between fixed extra-wide-lane integer ambiguity and other wide-lane integer ambiguity is selected as constraint conditions, then the wide-lane integer ambiguity, relative zenith tropospheric delay error and ionospheric delay error are estimated and the wide-lane integer ambiguity can be fixed by search mode. There is a kind of integer linear relationship between fixed wide-lane integer ambiguity and triple-frequency carrier phase integer ambiguity, this linear relationship is added to the observation model of carrier phase ambiguity parameter estimation and the integer ambiguity can be fixed. This algorithm is tested by the measured triple-frequency data of BDS CORS network. The results indicate that triple-frequency carrier phase ambiguity can be fixed accurately and effectively with the method.

Key words: BeiDou navigation satellite system, network RTK, triple-frequency, integer ambiguity, relative zenith tropospheric delay error, ionospheric delay error

中图分类号:

P288

高猛, 徐爱功, 祝会忠, 葛茂荣, 杨秋实. BDS网络RTK参考站三频整周模糊度解算方法[J]. 测绘学报, 2017, 46(4): 442-452.

GAO Meng, XU Aigong, ZHU Huizhong, GE Maorong, YANG Qiushi. The Algorithm of Triple-frequency Ambiguity Resolution between BDS Network RTK Reference Stations[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(4): 442-452.

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BDS网络RTK参考站三频整周模糊度解算方法

The Algorithm of Triple-frequency Ambiguity Resolution between BDS Network RTK Reference Stations

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