부산대학교 도서관

Differential GPS satellite positioning can eliminate pseudo range and pseudo range-calendar, can ionosphere delay and troposphere delay of the elimination of pseudo range, and the US government can reduce the impact of SA policies on satellite, positioning accuracy greatly enhanced. Therefore, the differential GPS positioning technology has been a rapid development and wide application in recent years. Pseudo range-distance differential positioning technology in the application of remote telemetry armed police vehicles; armed police patrol vehicles for rapid activation and reasonable arrangements helpful, greatly improving the security and the armed police force to hunt down fugitives in the area. Thus, some foreign countries have established this advanced system. Some cities in China have begun to establish this system, the application has great prospects.