测绘学报 ›› 2019, Vol. 48 ›› Issue (5): 555-562.doi: 10.11947/j.AGCS.2019.20170611

• 大地测量学与导航 • 上一篇    下一篇

基于椭球不确定性的平差模型与算法

宋迎春1,2, 夏玉国1,2, 谢雪梅1,2,3   

  1. 1. 有色金属成矿预测与地质环境监测教育部重点实验室(中南大学), 湖南 长沙 410083;
    2. 中南大学地球科学与信息物理学院, 湖南 长沙 410083;
    3. 中南林业科技大学土木工程学院, 湖南 长沙 410004
  • 收稿日期:2017-10-31 修回日期:2018-07-15 出版日期:2019-05-20 发布日期:2019-06-05
  • 通讯作者: 谢雪梅 E-mail:xiexuemei_2003@126.com
  • 作者简介:宋迎春(1963-),男,博士,教授,研究方向为测量数据处理理论与方法。E-mail:csusyc@csu.edu.cn csusyc@qq.com
  • 基金资助:
    国家自然科学基金(41574006;41674009;41674012)

Adjustment model and algorithm based on ellipsoid uncertainty

SONG Yingchun1,2, XIA Yuguo1,2, XIE Xuemei1,2,3   

  1. 1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, China;
    2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;
    3. School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China
  • Received:2017-10-31 Revised:2018-07-15 Online:2019-05-20 Published:2019-06-05
  • Supported by:
    The National Natural Science Foundation of China (Nos. 41574006;41674009;41674012)

摘要: 测量平差模型中的参数通常存在一些不确定的附加信息或先验信息,充分利用它们可以对部分参数进行约束,从而保证参数解的唯一性和稳定性。本文利用椭球集合描述不确定性,建立了一个新的带有椭球不确定性的平差模型。以两个椭球交集的外接椭球的特征矩阵的迹最小平差准则,分析了不确定度的传播规律,给出了带有椭球不确定性的平差方法。最后,通过算例验证了算法的有效性,说明了平差解与带权混合估计的关系。

关键词: 不确定性, 椭球约束, 平差模型, 病态问题, 集员估计

Abstract: In surveying adjustment models, there usually is some uncertain additional information or prior information on parameters, which can constraint on the parameters, and guarantee uniqueness and stability of parameters solution.In this paper, ellipsoidal sets are used to describe uncertainty, so an adjustment model with ellipsoidal uncertainty is established. The minimization in matrix trace of circumscribed ellipsoid with two ellipsoid intersections is regarded as a proposed adjustment criterion, the propagation law of uncertainty is analyzed, and the adjustment method with ellipsoid uncertainty is given. Finally, a numerical example is given to test and verify the effectiveness of the proposed algorithm, and the relation between the adjustment result and the weighted mixed estimation is illustrated.

Key words: uncertainty, ellipsoid constraint, adjustment model, ill-posed problem, set membership estimation

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