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Multi-mode differential positioning method and device

A differential positioning and pseudo-range differential technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve the problems of large size and inconvenient portability of terminals, and achieve the effect of improving accuracy

Inactive Publication Date: 2017-04-05
DATANG SEMICON DESIGN
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0022] The traditional differential system generally adopts the radio station mode, which needs to be equipped with a high-power antenna to receive differential data, and the terminal is bulky and inconvenient to carry

Method used

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  • Multi-mode differential positioning method and device
  • Multi-mode differential positioning method and device

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Embodiment Construction

[0060] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0061] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0062] figure 2 is a schematic diagram of the structure of the differential positioning system in an embodiment of the present invention. Such as figure 2 As shown, in this embodiment, a GNSS receiver is added to the base station, and the GNSS may inc...

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PUM

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Abstract

The invention discloses a multi-mode differential positioning method and device used in a cell base station, a broadcasting base station and / or a WiFi base station, wherein the cell base station communicates with a mobile terminal through a mobile network, the broadcasting base station communicates with the mobile terminal through FM, the WiFi base station communicates with the mobile terminal via WiFi. The method comprises steps of: in the case that a GNSS is turned on, receiving a satellite signal; selecting a positioning mode, and if the mobile network, FM or WiFi is not turned on, enabling the GNSS to receive the satellite signal and performing independent positioning; if at least one of the mobile network, FM And WiFi is turned on, performing differential positioning. The multi-mode differential positioning method and device may perform high-precision differential positioning.

Description

technical field [0001] The invention relates to the field of positioning technology, in particular to a multi-mode differential positioning method and system. Background technique [0002] In recent years, the positioning function has become a basic function, which greatly meets people's positioning needs. As the price of positioning chips continues to drop, the positioning function is also popularized to more people. Now the Global Navigation Satellite System (GNSS, Global Navigation Satellite System) includes four major systems, the Global Positioning System (GPS, Global Position System), Beidou, GLONASS, and Galileo. There are usually two positioning methods: pseudo-range measurement and carrier phase measurement. Among them, pseudo-range difference is used in navigation, mobile communication and other fields, and a positioning accuracy of about 10 to 20 meters can be obtained. Carrier phase measurement is mainly used in the field of surveying and mapping, and the accur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/48
CPCG01S19/48
Inventor 仲智刚龚炜炜于娜
Owner DATANG SEMICON DESIGN
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