| Summary: | 碩士 === 國立成功大學 === 測量工程學系 === 85 === Nowadays, Ministry of Interior has done the minimun
constraintadjustment of 105 first order statellite control
points with GPSmeasurement. But, it has not identified GPS datum
definition andTaiwan datum definition. Thus, the datum
transformation plays akey role, if we want to apply GPS
measurement result in commongeodetic measurement directly. In
datum transformation methods, except we analyze andexperiment
the characters of 7-parameters method. Due to theincrease of
common points, we wish to expand the datumtransformation method.
Based above, it is reffered that unionVeis model and least
square prediction as well as minimumcurvature method can be used
to manipulate datum transformation. Based on the experiments,
it is recommoned to use union Veismodel and least square
prediction method for detecting error ofdata firstly (abandom
common points or not) in Taiwan, thenminimum curvature method
can be utilized to form mesh fortransforming According to above
advice, common points can notonly complete fitting well, but
also keep the plane absoluteaverage of datum shift of check
points at about 30 cm.
|
|---|
