CAJ | 학술논문

测量应用中，常常需要将RTK获取的三维空间坐标转换成当地高斯平面坐标和高程。一般的转换方法是采用空间七参数或平面四参数转换模型。因此为了实时获取当地坐标，需要预先求取相应的转换参数，这些参数包括椭球长半轴、椭球扁率和空间七参数或者平面四参数。本文研究实现了一种同时解算这13个参数的数学模型，可根据具体应用需要进行自由求取。并以上海地区为例，解算了8种参数组合，分析比较了不同参数对坐标转换结果的影响。
측량응용중，상상수요장RTK획취적삼유공간좌표전환성당지고사평면좌표화고정。일반적전환방법시채용공간칠삼수혹평면사삼수전환모형。인차위료실시획취당지좌표，수요예선구취상응적전환삼수，저사삼수포괄타구장반축、타구편솔화공간칠삼수혹자평면사삼수。본문연구실현료일충동시해산저13개삼수적수학모형，가근거구체응용수요진행자유구취。병이상해지구위례，해산료8충삼수조합，분석비교료불동삼수대좌표전환결과적영향。
In surveying applications ,the positioning results obtained from GPS RTK are usually presented in local plane coordinate and height respectively .Some pre-setting parameters including the semimajor axis , oblateness of the earth ellipsoid ,cartesian seven-parameters of transformation ,and four-parameters for plane coordinate transformation are needed .In this paper ,a method to solve all these 13 parameters in one model is introduced .Eight groups of parameter combination are solved for Shanghai area and the differences of results were compared .