It introduces particularly three models: city basic geographical information government affair platform, theme exploration and survey informationservice platform, and navigation location service.
介绍了城市基础地理信息政务平台、专题勘测信息公众服务平台和导航位置服务三种服务模式。
2
Position measuring instrument and method, navigation instrument and method, informationservice and audio-frequency information transmit-receive method.
位置测量仪器和方法，导航仪器和方法，信息服务及声频信息收发方法。
3
With digital group, satellite navigation, geographic informationservice and other functions provided by satellite communication, it achieved mobile emergency communication transmission on wheels.