摘要
高程异常模型的建立是否合适 ,对 GPS水准高程测量的精度产生重要影响。从数据诊断原理出发 ,研究了对拟合模型参数作显著性数据判据 ,据此建立高程异常模型。使 GPS水准中预估其它各点高程的精度有明显提高 。
Whether elevation abnormality models are built properly has great effects on the precision of GPS level elevation survey. In this paper, judgements of markedness of fitting model parameters are studied and elevation abnormality models are built on the basis of the principle of data diagnoses. The precision of elevation of other points estimated is obviously improved.
出处
《大坝观测与土工测试》
2000年第4期16-18,共3页
Dam Observation and Geotechnical Tests
关键词
高程异常
GPS水准
模型诊断
差值模型
elevation abnormality
GPS level
model diagnoses
difference model
