为实现城市部件信息采集的快速、高精度、智能化，研制出基于GPS、GIS及PDA的内外一体化城市部件信息采集器，并对该采集器所采用的连续运行服务综合系统（CORS）技术、测距交会原理、地图漫游和数据库理论、基于软件设计思想的集成方法进行研究。基于PDA模式阐述了采集器的基本原理和功能，以CORS为主，辅助激光测距交会测定城市部件空间位置，分析基于移动GIS的部件信息识别和属性录入、保存、更新的关键技术。实验表明：该采集器测定城市部件空间位置的点位精度为20 cm左右，满足规范要求，解决了GPS无信号情况下的定位问题。

In order to realize gathering the urban components information fast, accurately and intelligently, a information acquisition collector integrating the inside and outside urban components was developed based on GPS, GIS and PDA. The technology of CORS, principle of distance intersection, theory of map roaming and database for urban components acquisition was investigated based on the integrated method in software design field. Firstly, we introduce CORS and the laser ranging technology in this paper. Secondly, by based on PDA pattern elaborate the basic principle and function of the collector. Then, analyze the key technologies, using CORS as the main mode, laser ranging intersection as auxiliary mode to determine the components spatial positions as well as the attribute data based on mobile GIS. Finally, introduce the development and test procedure of the device. Experiment shows that the accuracy of the poisoning results of urban components is about 20 cm, which meets the specification. Solve the problem of GPS positioning at the case of no signal.