测绘通报 ›› 2025, Vol. 0 ›› Issue (5): 152-158.doi: 10.13474/j.cnki.11-2246.2025.0525

• 技术交流 • 上一篇    

最优抵偿投影面算法在控制高速公路控制网投影变形中的应用

刘永义1, 李宏超1, 吕国卿2   

  1. 1. 河南测绘职业学院, 河南 郑州 451464;
    2. 河南省测绘工程院, 河南 郑州 450003
  • 收稿日期:2024-09-29 发布日期:2025-06-05
  • 通讯作者: 李宏超。E-mail:lhc_1015@163.com
  • 作者简介:刘永义(1986—),男,硕士,讲师,主要研究方向为卫星定位技术及应用。E-mail:280306440@qq.com
  • 基金资助:
    河南测绘职业学院青年科研基金(2023CHQN07)

Application of optimal compensatory projection surface algorithm in controlling projection deformation of expressway control network

LIU Yongyi1, LI Hongchao1, Lü Guoqing2   

  1. 1. Henan College of Surveying and Mapping, Zhengzhou 451464, China;
    2. Henan Surveying and Mapping Engineering Institute, Zhengzhou 450003, China
  • Received:2024-09-29 Published:2025-06-05

摘要: 针对高速公路平面控制测量中常见的投影变形超限问题,本文分析了东西走向长跨度高速公路平面控制网中的投影变形产生的原因及特征,提出了投影控制阈值的确定方法,并验证了此方法可以方便地判断出抵偿投影面的有效范围。定义了最优抵偿投影面的两个参数,在此基础上,提出了快速确定抵偿投影面最优解的方法,设计了确定抵偿投影面最优解的技术路线。基于具体工程实例数据的试验结果表明,本文方法确定的最优抵偿投影面投影变形最大值为17.7 mm/km,最优抵偿投影面相对于参考椭球面的投影变形控制作用在10.4~14.4 mm/km,相对于25 mm/km的限差而言,最优抵偿投影面对于投影变形控制作用非常明显。本文的研究成果在高速公路控制网的投影变形控制方面有一定的实用价值。

关键词: 投影变形, 控制, 阈值, 最优抵偿投影面, 高速公路控制网

Abstract: In response to the common problem of projection deformation exceeding the limit in expressway plane control survey,this paper analyzs the causes and characteristics of projection deformation in the plane control network of east-west long span expressways.It proposes a method for determining the projection control threshold and this method has been test that it is convenient to determine the effective range of the compensatory projection plane.Two parameters are defined for the optimal compensatory projection plane.Furthermore,a method for quickly determining the optimal solution of the compensating projection plane is proposed.It designs a technical route for determining the optimal solution for compensating projection surfaces.The maximum projection deformation of the optimal compensatory projection surface determined by the proposed method is 17.7 millimeter per kilometer and the control effect of the projection deformation of the optimal compensatory projection surface on the reference ellipsoid surface is between 10.4~14.4 millimeter per kilometer based on the specific engineering example dataspecific data.It is shown that the optimal compensatory projection plane has a significant effect on controlling projection deformation compared to the limit of 25 millimeter per kilometer.The research results of this paper have certain practical value in the projection deformation control of expressway control networks.

Key words: projection deformation, control, threshold, optimal compensatory projection plane, expressway control network

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