Experience with GIS data compilation or incremental update.
有GIS数据编译或者增量更新经验。
The technique of GPS assistant orientation and the data update of GIS.
分析GPS辅助定位的技术方法和地理信息系统的数据更新。
Based on user's right and limit classification management, police information update and data acquisition function are contrived, which make GIS data updating and maintaining more convenient.
根据用户权限分级管理，设定警务信息更新，数据获取功能，使得地理信息与警用数据更新、维护方便。
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