摘要
将Bayes估计中的全部参数加权扩展为部分参数加权,从Bayes定理出发导出了参数估值公式和精度估计公式;推导了GPS数据处理中基准站加权不当对平差值的影响公式;证明了基准站加权不当时将影响参数估值的最优性,使估值精度降低,并用算例估计了基准站加权不当对框架参数影响的大小。
This paper develops Bayesian theory from all parameter with prior weight to part parameters with prior weight. Formulas of paramater estimation and accuracy estimates are derived from Bayesian theorem. Influence formulas of improper weight attached to datum station on paramater estimation are also derived from GPS data processing. When reference stations attached improper weight, that will influe best property and accuracy of parameter estimation. The values of influence on coordinate frame parameters are estimated in two useful examples.
出处
《测绘学院学报》
北大核心
2002年第4期235-238,242,共5页
Journal of Institute of Surveying and Mapping
基金
国家自然科学基金资助项目(40 0 740 0 6)
测绘与遥感信息工程国家重点实验室基金项目
