| 卫星定位轨迹最小二乘拟合适应性分析 |
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| 引用本文： | 陈志强,鲍鹏宇,宁云转.卫星定位轨迹最小二乘拟合适应性分析[J].铁路通信信号工程技术,2020(4):21-24. |
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| 作者姓名： | 陈志强 鲍鹏宇 宁云转 |
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| 作者单位： | 北京全路通信信号研究设计院集团有限公司 |
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| 基金项目： | 中国铁路总公司科技研究开发计划系统性重大项目(P2018G008)。 |
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| 摘 要： | 卫星定位技术在列控系统深入应用,轨道信息数字化是其中的关键问题。提出一种基于卫星轨迹最小二乘拟合的轨道数据采集方法,并针对地理坐标系距离计算和非线性映射两个问题,提出3个假设条件。当待拟合的卫星定位数据满足这3个假设条件时,可以使用最小二乘方法获得轨道的近似最优解。
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| 关 键 词： | 列控系统 北斗卫星导航系统 最小二乘方法 卫星定位 经纬度 |
Adaptability Analysis of Least Square Fitting of Satellite Positioning Trajectory |
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| Chen Zhiqiang,Bao Pengyu,Ning Yunzhuan.Adaptability Analysis of Least Square Fitting of Satellite Positioning Trajectory[J].Railway Signalling & Communication Engineering,2020(4):21-24. |
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| Authors: | Chen Zhiqiang Bao Pengyu Ning Yunzhuan |
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| Institution: | (CRSC Research&Design Institute Group Co.,Ltd,Beijing 100070,China) |
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| Abstract: | With the thorough application of satellite positioning technology in train control system, the digitization of track information is the key issue. This paper puts forward a method of track data acquisition based on the least square fitting of satellite trajectory, and proposes three assumptions for the distance calculation and nonlinear mapping of geographic coordinate system. When the satellite positioning data to be fitted meets these three assumptions, the approximate optimal solution of the track can be obtained by using the least square method. |
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| Keywords: | train control system Beidou navigation satellite system least square method satellite positioning longitude and latitude |
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