Fitting Algorithm of the Positioning Data Post-processing for Hydrography

In terms of the requirement on the positioning data post-processing in hydrographic survey,a new method for the positioning data post-processing,based on multiquadric fitting,is presented in this paper.The results show that,in the data post-processing,the quality of the positioning data can be improved by the multiquadric fitting and the precision can achieve the center meter level.The implement of new method is in favor of improving quality of the positioning achievement for hydrographic survey.