CAJ | 학술논문

在地籍测量中我们常用的坐标系是西安80坐标系和一些地方坐标系，且多数情况下用的是平面坐标系（一般，高程需单独处理）。另外，地籍测量一般作业区域不大，可将其视为平面。坐标系转换问题可简化为平面坐标系之间的转换，其转换一般用的是四参数模型。本文详细推导了建立简化的坐标转换四参数模型的过程，再运用最小二乘平差原理求出四参数的精确解，然后对其进行精度评定，最后给出算例验证了模型在满足精度的前提下，具有广泛的实用性。
재지적측량중아문상용적좌표계시서안80좌표계화일사지방좌표계，차다수정황하용적시평면좌표계（일반，고정수단독처리）。령외，지적측량일반작업구역불대，가장기시위평면。좌표계전환문제가간화위평면좌표계지간적전환，기전환일반용적시사삼수모형。본문상세추도료건립간화적좌표전환사삼수모형적과정，재운용최소이승평차원리구출사삼수적정학해，연후대기진행정도평정，최후급출산례험증료모형재만족정도적전제하，구유엄범적실용성。
In cadastral survey ,it often use Xi'an 80 coordinate system and some local coordinate systems ,and in most cases , use planar coordinate system(Generally ,dealing with the elevation alone) .In addition ,the scope of work is limited ,so we can see it as a plane .So ,the problem of coordinate system conversion could reduce the problems of the conversion between plane coordinate systems .Usually it use the four parameters model .In this paper ,we develop the process of building the four parameters simplified model ,solving the exact solution by using the least squares principle of adjustment ,then evaluate its precision .Under the precondition of satisfying the precision ,it give an example to prove its comprehensive commodity .