说明：  no intro
(According to the specific circumstances of Huadu District, Guangzhou, the Guangzhou City Public Security Bureau of Huadu District branch of three-dimensional geographic information system (the Asian Games venues) the construction of the project objectives in the construction of the first phase of police use of geographic information database on the basis of the Asian Games security to the three-dimensional electronic map as the basis, the use of 3G wireless networks, real-time monitoring of vehicle equipment end of the video three-dimensional geographic information systems through the built-in 12 channel GPS module, the command center readily available equipment load end where precise location information.)