顾及先验信息的变形监测网平差

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 adjustment method with considering the prior information are the paper researched. The functional model is given and the optimum solution formulas are deduced. Whether the prior information is considered or not, the parameter 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 net work adjustment shows that considering the prior information can improve the accuracy of the parameter estimation.