A continuous geodetic reference system has been requested in positioning in the world because of big use of GNSS including GPS, GLONAS, Galileo etc. Many countries as like Japan, US and Europe have been changed their geodetic reference system from loc...
A continuous geodetic reference system has been requested in positioning in the world because of big use of GNSS including GPS, GLONAS, Galileo etc. Many countries as like Japan, US and Europe have been changed their geodetic reference system from local to global. As the revision of Survey Law, Korean reference ellipsoid changed from Bessel 1841 to GRS80 and Korean geodetic reference system also changed from Suwon datum to Global geodetic reference system. So, official coordinates of all national control points have to be transformed to GRS80 coordinates.
The purpose of this study is to obtain seven parameter of coordinates transformation on cadastral control points in Jinju area. For this purpose, GPS surveying was accomplished using Trimble5700 receivers and Topcon Regacy receivers on the geodetic network which consist of twelve cadastral control points and national triangulation points in Jinju.
After data processing as like baseline analyses and network adjustment, fanal geographical coordinates referred to Bessel 1841 and GRS80 ellpsoid could be obtained.
Finally, seven parameter of coordinates transformation from local datum to global geodetic reference system of cadastral control points in Jinju area could be obtained by use of Molodensky - Badekas mathematical model and the values of seven parameter is like below. The values of datum shift △X, △Y, △Z is -124.8628 m, 468.2271m, 648.4965m and the values of orientation parameter X, Y, Z axis is 20.3528, 28.8650, 3.8459, respectively and the value of scale factor is -57.9773ppm.