摘要
给出了似单差法单历元直接解算GPS监测点变形量的数学模型 ,对影响变形量精度的误差进行了定性分析 ,主要研究了模型误差产生的原因并提出了相应的改进算法。试验数据的数值结果表明 ,采用改进算法后 ,本文给出的似单差模型也是正确的。最后 ,对似单差法的主要特点进行了总结。
This paper gives the mathematical model of the similar single\|difference methodology used to solve the GPS monitoring points deformation values directly in single epoch,the errors influencing the accuracy of deformations are analyzed qualitatively,the cause of model error is researched mainly and the improved algorithm is advanced.The numerical results of test data show,using improved algorithm,that the similar simgle\|difference model given in this paper is correct,Finally,the main characteristics of the similar single\|difference methodology are concluded.
出处
《铁路航测》
2002年第3期1-4,共4页
Railway Air Survey
基金
国土资源部科技基金资助项目 ( 2 0 0 0 10 2 0 30 4 )
关键词
似单差模型
误差分析
GPS监测
似单差法
变形量
算法改进
变形监测
全球定位系统
GPS monitoring
Similar Single\|difference Methodology
Single epoch
Deformation value
Model error
Algorithm improvement
Characteristics
