ESTABLISHING REGIONAL CRUSTAL MOVEMENT VELOCITY FIELDWITH COLLOCATION MODEL BASED ON DISPLACEMENT PRINCIPLE
Li Chong 1 2) ; Li Jiancheng 1) ; and Qu Wei 3)
1)School of Geodesy and Geomatics, Wuhan University, Wuhan 430079;2)Sichuan Quality Supervision and Testing Center of Surveying and Mapping Product, Chengdu 610041;3)School of Geological Engineering and Surveying Engineering,Chang’an University, Xi’an 710054
Abstract：For the research on regional crustal movement, collocation model is always used to estimate the points which need attention without observation.However,because of its tendency characteristics of function model and its active characteristics of statistic model, accurate covariance matrix of the model is hard to be determined.This paper has analyzed and compared some popular covariance function, then brought up a new collocation model based on displacement principle. The new model can build up different collocation model aiming at different points, thus many avoid the accuracy loss of using experiential covariance function. The accuracy of the new model is apparently higher than normal collocation model through special verification.
Li Chong ,Li Jiancheng ,and Qu Wei . ESTABLISHING REGIONAL CRUSTAL MOVEMENT VELOCITY FIELDWITH COLLOCATION MODEL BASED ON DISPLACEMENT PRINCIPLE[J]. jgg, 2012, 32(5): 33-36.
