法方程叠加的多模GNSS双差精密算法

doi:10.13474/j.cnki.11-2246.2018.0322

测绘通报 ›› 2018, Vol. 0 ›› Issue (10): 88-92.doi: 10.13474/j.cnki.11-2246.2018.0322

法方程叠加的多模GNSS双差精密算法

肖玉钢¹, 王峥¹, 陈华², 喻守刚¹

1. 长江空间信息技术工程有限公司(武汉), 湖北武汉 430010;
2. 武汉大学测绘学院, 湖北武汉 430079

收稿日期:2017-12-18 出版日期:2018-10-25 发布日期:2018-10-31
作者简介:肖玉钢(1984-),男,博士,工程师,研究方向为GNSS高精度定位定轨算法。E-mail:xiaoyugang@cjwsjy.com.cn
基金资助:
国家杰出青年科学基金（41525014）；国家自然科学基金（41374033）

A Precise Multi-GNSS Data Processing Algorithm with Double Difference Observations Based on the Normal Equation Stacking Technique

XIAO Yugang¹, WANG Zheng¹, CHEN Hua², YU Shougang¹

1. Changjiang Spatial Information Technology Engineering Co., Ltd., Wuhan 430010, China;
2. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

Received:2017-12-18 Online:2018-10-25 Published:2018-10-31

摘要/Abstract

摘要： 多模GNSS数据解算模型与方法是目前卫星导航领域的研究热点。本文提出了基于法方程叠加的多模GNSS双差算法，推导了数据处理模型中先验初值统一、先验约束消除与添加、法方程叠加的方法。基于变形监测试验平台的实测数据对算法的有效性和精度进行了验证。结果表明：在短基线条件下，基于法方程叠加的GPS/BDS多模双差算法能够达到平面1 mm、高程2 mm以内的精度水平，可满足大部分变形监测工程的需要。

关键词: 多模GNSS, 双差, 法方程叠加, 变形监测

Abstract: The mathematical models and methods of multi-GNSS data processing are the current focus of GNSS research. In this paper, an effective double-difference algorithm for multi-GNSS is proposed based on the normal equations stacking technique. The formula for unifying the priori values of parameters from different GNSS is derived, as well as the means of removing and re-imposing the priori constraints and the normal equation stacking method. The availability and accuracy of the new algorithm is verified in this paper with the observations from the deformation monitoring experimental platform. The results show that the accuracy for short baselines is better than 1 mm for the horizontal components, 2 mm for the vertical components with this new multi-GNSS data processing algorithm and the GPS/BDS observations, which could satisfy most of the deformation monitoring projects.

Key words: multi-GNSS, double difference, normal equation stacking, deformation monitoring

中图分类号:

P228

肖玉钢, 王峥, 陈华, 喻守刚. 法方程叠加的多模GNSS双差精密算法[J]. 测绘通报, 2018, 0(10): 88-92.

XIAO Yugang, WANG Zheng, CHEN Hua, YU Shougang. A Precise Multi-GNSS Data Processing Algorithm with Double Difference Observations Based on the Normal Equation Stacking Technique[J]. 测绘通报, 2018, 0(10): 88-92.

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法方程叠加的多模GNSS双差精密算法

A Precise Multi-GNSS Data Processing Algorithm with Double Difference Observations Based on the Normal Equation Stacking Technique

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