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The application of L-curve in Euler parameter estimation

HU Ya-xuan,WANG Qing-liang,HAO Ming(Second Crust Monitoring and Application Center,CEA,Xi'an 710054,China)  
With the development of space geodesy,more and more observations can be used to inverse the Euler vector of the plate.However,ill-condition problem may be found in the vectors estimation which relates to rotation of Eurasia plate.In order to solve the problem,the paper introduced L-curve method and estimated the errors of the results.The experiment showed that the precision of plate Euler parameter estimated by L-curve method was very high.The residual velocity could be used to analyze the internal deformation characteristics of the block.
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