기타원점지역 지적측량기준점의 통일 좌표 산출 연구

GPS 관측 자료로 서로 다른 원점 지역의 지적측량 좌표를 통일했다.

The coordinate of cadastral control points located over the area of different surveying origins is computed in a single surveying origin by trilateration adjustment of GPS baseline measurements. In every different surveying origins, wellmatched control points are selected and mutually coinciding coordinates are computed by free network adjustment. Then, the coordinate of the other control points over the area is computed by joining these points to the adjusted points. In practice, by using 18 points of Gari, 17 points of Gyeyang, and 33 points of Central origin in Incheon, the coordinates of total 68 points in every surveying origin are computed.

Between the points of different surveying origins, it is found that there are quantitative differences in azimuth and scale factors, and the approximate point coordinate of other surveying origins is calculated by correcting the scale and azimuth.