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Wide-area differential positioning method, apparatus, and terminal, and computer-readable storage medium

A wide-area differential and differential positioning technology, which is applied in the field of satellite positioning and can solve problems such as the inability of ordinary user terminals to achieve wide-area differential positioning.

Active Publication Date: 2018-03-06
深圳市时空导航科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, embodiments of the present invention provide a wide-area differential positioning method, device, terminal, and computer-readable storage medium to solve the technical problem that ordinary user terminals cannot achieve wide-area differential positioning in the prior art

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Embodiment Construction

[0025] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0026] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0027] figure 1 It shows a schematic diagram of interaction between user terminals 131-133 and differential GNSS server 120 provided by the embodiment of the present invention to realize wide-area differential positioning. Including GBAS message 111, SBAS message 112,...

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Abstract

The invention, which relates to the field of satellite positioning, provides a wide-area differential positioning method, apparatus, and terminal, and a computer-readable storage medium. The method comprises: a differential positioning request sent by a user terminal is received, wherein the differential positioning request carries initial positioning information of the user terminal and feature information corresponding to a data format that can be received by a receiver of the user terminal; a wide-area differential correction number meeting a preset condition is obtained from a database; and according to the initial positioning information and the wide-area differential correction number meeting the preset condition, a positioning correction number of the user terminal is calculated, wherein the format of the positioning correction number corresponds to the feature information. Because the positioning correction number that can be received by the receiver of the user terminal is calculated based on the initial positioning information and the wide-area differential correction number, the user terminal is able to carry out positioning accurately by using the positioning correctionnumber without any modification on the user terminal, so that the positioning accuracy of the user terminal is improved with low costs.

Description

technical field [0001] The invention belongs to the technical field of satellite positioning, and in particular relates to a wide-area differential positioning method, device, terminal and computer-readable storage medium. Background technique [0002] The Global Navigation Satellite System (GNSS) has developed rapidly in recent years and has been widely used around the world. The current GNSS mainly includes the Global Positioning System (GPS) of the United States, the GLONASS satellite navigation system of Russia, the Beidou of China and the Galileo of the European Union and other satellite navigation systems. GNSS performs positioning by measuring the distance from the receiver of the user terminal to multiple satellites. However, various errors, such as satellite orbit error, satellite clock error and ionospheric delay, etc., will affect the distance from the satellite to the receiver of the user terminal, thereby reducing the positioning accuracy of GNSS. At present, ...

Claims

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Application Information

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IPC IPC(8): G01S19/42G01S19/41
CPCG01S19/41G01S19/42
Inventor 翁多杰
Owner 深圳市时空导航科技有限公司
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