测绘通报 ›› 2018, Vol. 0 ›› Issue (1): 88-91,124.doi: 10.13474/j.cnki.11-2246.2018.0016

Previous Articles     Next Articles

Application of Large Elliptic Ellipsoid Gauss Projection in High-speed Railway

FENG Ligang1, YAO Dexin1, JIN Lixin2   

  1. 1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. The General Engineering Survey Instititute of Railways of Gansu, Lanzhou 730000, China
  • Received:2017-04-20 Online:2018-01-25 Published:2018-02-05

Abstract:

In order to reduce the problem of projection band transformation of the control point data in the east-west long projective engineering when Gaussian transformation is performed, the paper proposes to establish a large elliptical ellipsoid with the large elliptical line near the center line of the engineering line or its neighborhood. The large elliptic ellipsoid parameters are obtained according to the nonlinear programming optimal theory and ellipsoid transformation is finished,and then the Gauss projection is based on the new ellipsoid.

Key words: large elliptical line, ellipsoid transformation, non-linear optimization, projection deformation

CLC Number: