测绘通报 ›› 2017, Vol. 0 ›› Issue (10): 1-6.doi: 10.13474/j.cnki.11-2246.2017.0306

• 学术研究 •    下一篇

等距离球面高斯投影

陈成1, 金立新2,3, 李厚朴1, 刘强1   

  1. 1. 海军工程大学导航工程系, 湖北 武汉 430033;
    2. 中铁第一勘察设计院集团有限公司, 陕西 西安 710043;
    3. 甘肃铁道综合工程勘察院有限公司, 甘肃 兰州 730000
  • 收稿日期:2017-01-04 修回日期:2017-05-05 出版日期:2017-10-25 发布日期:2017-11-07
  • 作者简介:陈成(1990-),男,博士,主要研究方向为地图投影与地球重力场。E-mail:chenchengzyq@163.com
  • 基金资助:
    国家自然科学基金(41574009;41571441;41604010)

A Kind of Gauss Projection Based on the Equidistant Sphere

CHEN Cheng1, JIN Lixin2,3, LI Houpu1, LIU Qiang1   

  1. 1. Department of Navigation, Naval University of Engineering, Wuhan 430033, China;
    2. China Railway First Survey and Design Institute Group Co. Ltd., Xi'an 710043, China;
    3. The General Engineering Survey Institute of Railways of Gansu Co. Ltd., Lanzhou 730000, China
  • Received:2017-01-04 Revised:2017-05-05 Online:2017-10-25 Published:2017-11-07

摘要: 针对传统高斯投影直接基于等角横切圆柱投影而带来的不能直接用球面坐标换算等问题,研究了一种运用等距离球面进行投影的高斯投影,即等距离球面高斯投影。借助等距离纬度正反解公式,推导了等距离球面高斯投影的正反解公式,分析了其经纬线变形情况;基于投影公式,计算和分析了等距离球面高斯投影的长度变形、角度变形、面积变形及子午线收敛角等参数;最后与传统高斯投影进行比较,说明了该投影的可用性。

关键词: 高斯投影, 等距离球面, 等距离纬度, 长度变形, 子午线收敛角

Abstract: A kind of Gauss projection based on the equidistant sphere is studied by reason of the problem of the impracticality of calculation by using the spherical coordinates for the traditional Gauss projection based on the horizontal elliptic cylinder. First, the direct and inverse solutions of the Gauss projection based on the equidistant sphere are derived by using the direct and inverse solutions of the rectifying latitude with respect to the geodetic latitude, which help to calculate the distortions of meridians and parallels. Then, the length distortion, angular distortion, area distortion, and convergence of meridians of the Gauss projection based on the equidistant sphere are analyzed. Finally, in comparison with the traditional Gauss projection as regards these distortion parameters, the Gauss projection based on the equidistant sphere is available in practice.

Key words: Gauss projection, equidistant sphere, rectifying latitude, length distortion, convergence of meridians

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