一种基于地图数据的隧道拟合打点方法  

A Virtual Marking Method for Tunnels Based on Map Data

作　　者：黄冰 HUANG Bing(China Mobile Group Fujian Company Limited,FuZhou 350005,China)

机构地区：[1]中国移动通信集团福建有限公司,福建福州350005

出　　处：《长江信息通信》2025年第1期61-63,共3页Changjiang Information & Communications

摘　　要：文章提供了一种基于地图数据的隧道拟合打点实现方法,解决了目前在隧道测试中GPS信号丢失导致隧道打点准确度较低,人工设定难度大等问题,可适用于高速、高铁隧道测试中GPS信号丢失无法记录经纬度的问题。该方法具体包括:借助已有隧道地图数据信息,利用轨迹数据压缩算法对隧道地图数据进行压缩,计算压缩后各点位与下一点位的方位角,生成目标轨迹点信息数据库。寻找最近目标轨迹点信息数据库中的轨迹点作为原点,结合采集的时间及速率,计算生成当前GPS信号丢失的经纬度位置进行拟合打点。This paper provides a method of virtual marking points in tunnels based on map data,which solves the problems of low accuracy of tunnel marking points and difficulty in manually setting them in tunnel testing due to loss of GPS signals.It is suitable for use in tunnel testing in high-speed and high-speed railways where GPS signals are lost and cannot record latitude and longitude.The method includes the following specific steps:Utilize existing tunnel map data information,compress tunnel map data using the Douglas-Peucker(DP)algorithm for trajectory data,calculate the azimuth of each point after compression,and generate a target trajectory point information database.Find the nearest trajectory point in the target trajectory point information database as the origin,and combine the collected time and speed to calculate and generate the current GPS signal loss latitude and longitude for virtual marking points.

关 键 词：轨迹填充 定位 经纬度 无线测试 

分 类 号：TP92[自动化与计算机技术]