Use of Highly Accurate GPS in Network-Based Barrier-Free Map Creation System

近年来，通信技术、地理信息系统和智能信息系统的进步对社会技术系统产生了巨大的影响。特别是，高精度全球定位系统(GPS)的新技术使得以合理的成本实时获得移动对象的厘米级定位数据成为可能。本文提出了地理信息系统(GIS)的总体结构，以帮助用户利用互联网和高精度全球定位系统(GPS)创建无障碍街道地图。该系统的目的是提供一个有效的工具，支持为坐轮椅的肢体残疾人创建和使用基于网络的无障碍街道地图。轮椅配备了GPS天线和平板电脑，用于计算当前位置，精度为厘米级，以导航街道上的人。服务器从轮椅上收集在当地服务区周围移动的位置。将采集到的数据转化为有用的无障碍信息并集成到现有的地理信息中，在服务器中存储和共享。为了最大限度地减少用户的输入量，系统依靠智能信息技术构建地图的图形结构，并对路况进行推理。

Recent advances of communication technology, geographic information systems (GIS) and intelligent information systems have been making a great impact on the socio-technical systems. In particular, the new technology of high-accuracy global positioning systems (GPS) has made it possible to get centimeter-class positioning data of mobile objects in realtime at a reasonable cost.This work presents the general architecture of geographic information systems (GIS) for assisting the users in creating barrier-free street maps by using the Internet and the highly accurate global positioning systems (GPS). The purpose of the system is to provide an effective tool for supporting the creation and the use of network-based barrier-free street maps for physically-handicapped people in wheelchairs. The wheelchairs are equipped with the GPS antenna and the tablet PC for computing the current positions with a cm-class accuracy to navigate the people in the streets. The server collects the positions from the wheelchairs moving around the local service area. The collection of the data is stored and shared in the server after transformed into useful barrier-free information and integrated into the existing geographic information. To minimize the amount of the input by the users, the system relies on the intelligent information technology to construct the graphical structure of the maps and reason about the street conditions.