GPS wireless positioning method and system

Abstract

The present invention discloses a GPS wireless positional method and system. Said method mainly includes: control center transmitting GPS dynamic positioning beginning request to GPS positioning terminal, GPS positioning terminal regulating frequency of reporting GPS positioning information to control center, transmitting GPS positioning information to control center; said system including control center, wireless mobile communication network, GPS positioning terminal, GPS satellite; said control center transmitting dynamical wireless positioning request to said GPS positioning terminal, said GPS positioning terminal regulating reporting GPS positioning information frequency to said control center, and transmitting GPS positioning information to control center. The present invention method and system make a reasonable balance between GPS wireless application system wireless data communication quantity and GPS positioning information real time.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a GPS wireless positioning method and system. Background technique [0002] Global Positioning System GPS (Global Positioning System) is a new generation of satellite navigation and positioning system with all-round real-time three-dimensional navigation and positioning capabilities in sea, land and air. The GPS system consists of three parts: the space part—GPS satellite constellation; the ground control part—ground monitoring system; the user equipment part—GPS signal receiver. The GPS satellite sends the user data about the coordinates of the satellite itself, and the user receiver can calculate its own position data according to the data sent by the three satellites. The ground monitoring system measures and calculates the ephemeris of each satellite, and edits it into data for sending to the satellite, and then sent to the ground user in real time by the satellite. Th...

AI Technical Summary

Problems solved by technology

[0007] This technical solution has the following shortcomings: the control center controls the time and frequency of positioning information reporting, which increases the load on the control center; the large amount of communication data not only increases operating costs, but also easily leads to SMS, GPRS, CDMA and other data The blockage of the channel will affect the real-time positioning

[0009] This technical solution reduces the load on the control center and reduces some communication data overheads. However, there are still many disadvantages: because the fixed cycle is used for positioning, useless data is still frequently reported when the GPS positioning terminal is moving slowly or stationary, and When the GPS positioning terminal is moving fast, the reporting frequency is not enough, and the ideal real-time performance cannot be achieved

In the above two schemes, if the frequency of positioning information request or positioning information report is increased blindly, the purpose of grasping the GPS positioning information of the positioning terminal in close to real time can be achieved, but it will inevitably increase the amount of communication data and increase the operating cost. It may even lead to the blockage of the wireless channel; if the frequency of positioning information request or positioning information report is reduced, it will directly lead to poor real-time performance, and may lose some details of speed or direction changes that you want to master

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