测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2015年
4期
219-221
,共3页
GPS坐标转换%高程异常%曲面拟合%坐标系
GPS坐標轉換%高程異常%麯麵擬閤%坐標繫
GPS좌표전환%고정이상%곡면의합%좌표계
GPS coordinate transformation%height anomaly%curved surface fitting%coordinate system
GPS由于其高精度、速度快、全天候的特点，在工程测量及城市工程网的建立、更新和改造中广泛应用。但是GPS测量结果为WGS－84坐标，而实际应用的坐标系往往是1954北京坐标系和1980西安坐标系。本文针对GPS坐标转换过程中由于利用公共点求解转换参数，而将原有坐标系中系统误差引入转换过程中的情况，探讨将曲面拟合法应用到坐标转换中来处理转换残差的可行性，并通过工程实例证明了该方法可行。
GPS由于其高精度、速度快、全天候的特點，在工程測量及城市工程網的建立、更新和改造中廣汎應用。但是GPS測量結果為WGS－84坐標，而實際應用的坐標繫往往是1954北京坐標繫和1980西安坐標繫。本文針對GPS坐標轉換過程中由于利用公共點求解轉換參數，而將原有坐標繫中繫統誤差引入轉換過程中的情況，探討將麯麵擬閤法應用到坐標轉換中來處理轉換殘差的可行性，併通過工程實例證明瞭該方法可行。
GPS유우기고정도、속도쾌、전천후적특점，재공정측량급성시공정망적건립、경신화개조중엄범응용。단시GPS측량결과위WGS－84좌표，이실제응용적좌표계왕왕시1954북경좌표계화1980서안좌표계。본문침대GPS좌표전환과정중유우이용공공점구해전환삼수，이장원유좌표계중계통오차인입전환과정중적정황，탐토장곡면의합법응용도좌표전환중래처리전환잔차적가행성，병통과공정실예증명료해방법가행。
Because the technology of GPS position has the prominent advantages of high precision, fast speed and all-weather, it is widely used in the engineering survey and setting-up, upgrading and transforming of the urban engineering work.However, the GPS measurement result in the WGS -84 coordinate, and the practical application of the coordinate system is often BJ -54 coordinate system and the Xi’ an 80 coordinate system. In this paper, aims at the use of public point of solving the transformation parameters in the process of GPS coordinates conversion, and introducing system error in the original coordinate system to the process of transforma-tion, to explore the feasibility of application of curved surface fitting method in coordinate transformation to deal with the transformation residual, and through the engineering example proves the feasibility of this method.
