摘要
对多种平面与球面应变场计算模型进行分析,指出何种模型属于无偏差应变计算模型,何种模型为有偏差应变计算模型,何种模型偏差可以修正,何种模型只适用于均匀介质的应变计算而不能外延,何种模型可以用于作连续应变场的求解与分析;给出利用应变结果计算球面差异运动(位移)的修正关系,并论证了球面应变模型中非微分项的含义。
There exists many kinds of calculation models of plane and spherical strain fields,but the results are different.It is analyzed the representative models,and points out which model has unbias as well as which one has deviation,which models deviation can be corrected as well as which one can only be used to the strain computing of uniform medium but can not be extended and which model can be used the calculation and analysis of continuous strain field.Besides,it＇s also provides the correction relationship for computing spherical difference movement（displacement）by strain results,and demonstrates the meaning of the non-differential term in spherical strain model.
出处
《大地测量与地球动力学》
CSCD
北大核心
2010年第4期59-63,共5页
Journal of Geodesy and Geodynamics
基金
中国地震局地震预测研究所基本科研业务专项(02092401)
中国地震局"强化华北地区强震监视跟踪项目"
"十一五"国家科技支撑课题(2006BAC01B03-01-01)
关键词
GNSS
水平应变计算
模型适应性
偏差修正
应变滤波
GNSS
horizontal strain calculation
model applicability
deviation correction
strain filtering
