GPS 高程转换的总体最小二乘组合方法

摘要

In the current research on GPS height transformation ,single calculation methods are used only . However ,due to different calculation methods applicable for different conditions ,though for the solution of the same set of data ,the precision of each will also have advantages and disadvantages .In view of the above problems ,this paper puts forward the total least squares combination method of GPS height transformation;it makes the combination of a variety of different height transformation methods and calculates the weight of different schemes .Calculations are performed by using the actual engineering data to verify the feasibility and effectiveness of the method .T he test results show that the method can effectively improve the accuracy of height transformation .%在现有G PS高程转换的研究中，通常只采用单一的解算方法，然而，不同的计算方法由于适用的条件不同，在对同一组数据进行解算时，解算的精度也各有优劣。针对以上问题，文中提出G PS高程转换的总体最小二乘组合方法，对多种不同的高程转换方法进行组合，运用总体最小二乘法计算不同方法的权值，结合实际工程数据，验证该方法的可行性。计算结果表明，提出的方法能够有效地提高高程转换精度。