【摘要】 阐述了在应用GPS技术建立区域独立坐标系过程中的椭球变换问题。通过椭球变换的广义模型,系统地描述了椭球膨胀法、平移法、变形法三种常用的椭球变换方法,并利用广义大地坐标微分公式从理论角度分析了各方法的共同点和区别,提出了量化分析指标,分别从不同角度反映和量化了椭球变换前后对长度和平面坐标影响的情况。更多还原

【Abstract】 This paper discusses the ellipsoid transformation problem in the establishment of local independence coordinate reference system using GPS technique. Based on a general ellipsoid selection model, describes the ellipsoid expanding model, the ellipsoid shift model and the ellipsoid distortion model respectively and systematically. The similar and different points of these models are analyzed in the view of theoretical approach according the generalized geodesy differential coefficient formula. A new numerical analysis factor is given to describe the impact of before and after the transformation between different ellipsoids.更多还原