车载GPS道路信息采集和更新系统研究  

Study on Car-borne GPS Road Information Collecting and Update System

作　　者：李德仁[1] 陈小明[2] 郭丙轩 仲思东[4] 

机构地区：[1]武汉测绘科技大学校长办公室,武汉市珞喻路129号430079 [2]武汉测绘科技大学地学测量工程学院,武汉市珞喻路129号430079 [3]武汉测绘科技大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079 [4]武汉测绘科技大学光电工程学院,武汉市珞喻路129号430079

出　　处：《武汉测绘科技大学学报》2000年第2期95-99,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金!编号 49631050

摘　　要：介绍了车载道路信息采集和更新系统 (CRICUS)的设计和研究进展。该系统利用 3S集成技术采集道路信息并生成数字道路网数据库。初步实验表明 ,该系统的定位精度可达 1m。This paper introduces a car_borne road information collecting and update system (CRICUS).This system is capable to collect road network information and create digital road network effectively by means of integration of GPS and GIS. With a car_borne GPS,the trajectory of the car can be logged while the car runs along the road.5m differential positioning accuracy can be reached by using the cheapest GPS receiver with differential ability.Furthermore,by using carrier phase differential technique,decimeter to centimeter level accuracy can be obtained within a range of several hundred kilometers.In addition ,the road_relative information can also be recorded along with the GPS position data to generate road network database. This system consists of two components:field data collecting module and post_mission data processing module. Field data collecting module is composed of a GPS reference station and a mobile unit mounted on a vehicle.The mobile unit includes a GPS receiver and a computer with a field data collecting software installed.The field data collecting software is capable of collecting road spatial and attribute data,storing all data in the hard disk of computer while the car moving,and then transferring all data to computer in the office for subsequent data processing in post_mission data processing module.The GPS data will be recorded automatically and attribute data will be entered through keyboard or voice.The implementation of voice input will make the field work more efficient especially when the car is running on uneven road.The post_mission data processing module has three main functions:GPS data processing,attribute data editing and data output.GPS data will be differentially corrected and smoothed,then the GPS positions will be corrected to the centerline of the road.The attribute editing will retrieve the attribute value which is recorded in voice form and modify the attribute value wrong entered by keyboard in the field.Data output will arrange the spatial and attribute data into a road netwo

关 键 词：遥感 道路网 GIS GPS 信息采集 更新系统 

分 类 号：P228[天文地球—大地测量学与测量工程] P9[天文地球—测绘科学与技术]