摘要
研究顾及先验信息的监测网平差方法,给出了平差函数模型和最优参数估计公式:无论是否顾及先验信息,均可采用该式来表达;分析了顾及先验信息平差的精度和适用条件;通过试验揭示了先验精度和虚拟观测值的质量与平差精度之间的关系;计算实例表明顾及先验信息的监测网平差可以提高平差结果的精度。
The deformation monitoring network the paper researched. The functional model is given prior information is considered or not, the parameter adjustment method with considering the prior information are and the optimum solution formulas are deduced. Whether the estimation formulas are the same. The estimation accuracy and applicable condition analysis were also carried out. The study reveals the relationships among prior accuracy, the quality of virtual observations and the adjustment accuracy. The calculation example of deformation monitoring network adjustment shows that considering the prior information can improve the accuracy of the parameter estimation.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第2期45-48,共4页
Journal of Geodesy and Geodynamics
基金
湖南省自然科学基金(10JJ3090)
湖南省重点学科建设项目
特殊环境道路工程湖南省重点实验室开放基金(kfj120405)
公路工程省部共建教育部重点实验开放基金(kfj110102)
关键词
参数估计
先验信息
变形监测
贝叶斯估计
测量平差
parameter estimation
prior information
deformation monitoring
Bayes estimation
surveying adjustment
