计算机工程 ›› 2010, Vol. 36 ›› Issue (2): 244-246.doi: 10.3969/j.issn.1000-3428.2010.02.086

• 开发研究与设计技术 • 上一篇    下一篇

基于高斯投影的经纬度距离参数修正方法

胡伟凡1,杨恢先2,3,于 洪3,魏 娟1   

  1. (1. 湘潭大学信息工程学院,湘潭 411105;2. 湘潭大学材料与光电物理学院,湘潭 411105;3. 琼州学院物理系,五指山 572200)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-20 发布日期:2010-01-20

Latitude and Longitude Distance Parameter Correction Method Based on Gauss Projection

HU Wei-fan1, YANG Hui-xian2,3, YU Hong3, WEI Juan1   

  1. (1. Department of Information Engineering, Xiangtan University, Xiangtan 411105;2. Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan 411105;3. Department of Physics, Qiongzhou University, Wuzhishan 572200)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-20 Published:2010-01-20

摘要: 当经纬度求算实际距离时,要满足中小范围内和大范围内2点求取距离的误差要求,而误差会随着经度差增大呈非线性增长。针对此,改进经典高斯投影算法,拆分计算跨带经度的2点距离,利用经度差作为控制变量得到修正系数,对线性叠加的距离进行修正。实验结果表明,该方法能减少跨带误差,有效控制计算误差。

关键词: 高斯投影, 投影带, 分带, 最小二乘拟合

Abstract: When two difficulties in calculating practical distance by longitude and latitude degree should satisfy the error range requested not only in small scope but also in large scope, the error will be enlarged nonlinearly as the longitude enlarged. This paper improves the classical Gauss projection algorithm, splits two points distance of computing crotch strap longitude, makes the longitude difference as a control variable to get the modification factor, amends the distance of linear superposition. Experimental result shows that this method can efficiently reduce errors between areas and control the error range effectively.

Key words: Gauss projection, projection area, zonation, Least Square(LS) fitting

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