Local area network positioning terminal differential data providing system and method

Abstract

The invention discloses a local area network positioning terminal differential data providing system and method, and relates to the technical field of satellite positioning. The local area network positioning terminal differential data providing system and method achieve the purpose that differential data are provided at a low cost. The system relates to at least one positioning region, wherein each positioning region is provided with a plurality of wireless positioning terminals. The system comprises a continuous operation reference station subsystem, each positioning region is provided with a wireless local area network, each wireless local area network is provided with a differential data server, and each differential data server is connected to the continuous operation reference station subsystem through the Internet. Each wireless positioning terminal is connected to a wireless local area network of a positioning region where the wireless positioning terminal is located and requests differential data from the continuous operation reference station subsystem through a differential data server in a wireless local area network where the wireless positioning terminal is located. The local area network positioning terminal differential data providing system and method can provide the differential data for the situation that a plurality of terminals are arranged in a single region at a low cost.

Description

Technical field [0001] The present invention relates to satellite positioning technology, in particular to a technology of a local area network positioning terminal differential data providing system and its data providing method. Background technique [0002] The continuous operation reference station system is used to provide differential data to the satellite positioning terminal to achieve high-precision positioning. In the current continuous operation reference station system, each positioning terminal directly accesses the continuous operation reference station system through a 2G, 2.5G or 3G wireless network, and directly performs data communication with the continuous operation reference station system. [0003] However, in some specific occasions, there may be many positioning terminals that require differential data to obtain high-precision coordinates (for example, there are many vehicles in a driving school, and each vehicle is equipped with positioning terminals that r...

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Problems solved by technology

[0003] However, in some specific occasions, many positioning terminals may need differential data to obtain high-precision coordinates at the same time (for example, there are many vehicles in a driving school, and each vehicle is equipped with a positioning terminal that requires differential data), and these The positioning terminals are all located in the same area. If each positioning terminal directly accesses the continuous operation reference station system, and directly performs data communication with the continuous operation reference station system, the data communication cost is relatively high (communication fee and continuous operation reference station system fee) , the burden of continuous operation of the reference station system is also heavy, and from a technical point of view, these positioning terminals are located in the same area (such as the training ground of the driving school), and the difference data obtained are basically the same. All terminals request differential data

[0004] In order to solve the above problems, an independent single reference station system can be established for each application area, and the independent single reference station can be used to provide differential data for each positioning terminal in the application area, which can save data communication costs, but establish an independent single reference station The cost of software and hardware required for the reference station system is also high

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