CAJ | 학술논문

CGCS2000（2000国家大地坐标系）建立城市城建坐标系，对各地区均是一次坐标系整合提升的好机会，通过建立高等级、多坐标系、统一的GNSS控制网，建立基于CGCS2000的城市城建坐标系统，同时解决新旧坐标系统转换的问题。由于城建坐标系需要考虑边长投影变形的问题，设置自定义中央子午线是一种简便的解决方法，此种有特殊定义的坐标系统仍然属于一种相对独立坐标系统，这种独立坐标系统与国家坐标系统保持了最大的一致，可以无精度损失地、方便地转换到国家坐标系统中。本文就建立基于CGCS2000的珠海市相对独立坐标系进行探讨，并对珠海新旧坐标系转换可能产生的问题及处理方法进行探讨。
CGCS2000（2000국가대지좌표계）건립성시성건좌표계，대각지구균시일차좌표계정합제승적호궤회，통과건립고등급、다좌표계、통일적GNSS공제망，건립기우CGCS2000적성시성건좌표계통，동시해결신구좌표계통전환적문제。유우성건좌표계수요고필변장투영변형적문제，설치자정의중앙자오선시일충간편적해결방법，차충유특수정의적좌표계통잉연속우일충상대독립좌표계통，저충독립좌표계통여국가좌표계통보지료최대적일치，가이무정도손실지、방편지전환도국가좌표계통중。본문취건립기우CGCS2000적주해시상대독립좌표계진행탐토，병대주해신구좌표계전환가능산생적문제급처리방법진행탐토。
Based CGCS2000(2000 National Geodetic Coordinate System )establishing urban coordinate system ,is a good opportunity to upgrade about coordinate system ,through the establishment of GNSS-control network of high-level, multi-coordinate system,establishing coordinate system ,at the same time solve the problem of new and old coordinate system transformation ,Due to the coordinate system need to consider the deformation of side length problem ,Set the cus-tom central meridian is a simple solution ,this has a special definition of coordinate system still belongs to a kind of rela-tively independent coordinate system , this independent coordinate system and national coordinate system can keep the biggest consistency ,without loss of precision ,convenient to transition to the national coordinate system ,this paper is built based on CGCS2000 zhuhai relatively independent coordinate system were discussed ,and the zhuhai coordinate system transformation between the old and the new possible problems and solutions are discussed .