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Virtual GPS ground receiver system and method for using said system

A receiver and ground technology, applied in the direction of radio wave measurement system, satellite radio beacon positioning system, measurement device, etc., can solve the problem of high performance cost of LSP

Inactive Publication Date: 2009-10-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Obviously, in the case of no station push, LSP must calculate all visible satellites above a certain point on the ground every time it performs a positioning operation, so a large number of visible satellite calculation operations are required, which will inevitably lead to a large performance overhead of LSP , especially when there are many concurrent location requests of the LSP

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  • Virtual GPS ground receiver system and method for using said system
  • Virtual GPS ground receiver system and method for using said system
  • Virtual GPS ground receiver system and method for using said system

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0051] The core idea of ​​the present invention is to use the wide coverage of GPS satellites and the long-term effectiveness of GPS data to pre-calculate the visible satellite data of each virtual RGPS point for direct use in positioning sessions.

[0052] This system allows users to preset fixed virtual RGPS points. When setting up a fixed virtual RGPS, the following items should be noted:

[0053] 1) The effective coverage range of virtual RGPS is determined in advance, and only one virtual RGPS can be set in each effective range. It does not need to be too dense, but it cannot be too small. For example, according to empirical values, the effective coverage range of the virtual RGPS is 500-1000 kilometers (radius), so the distance between each virtual RGPS need not be less than 500 kilometers, but it cannot be greater than 1000 kilometers. This system al...

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Abstract

The invention discloses a virtual RGPS system, which includes a virtual RGPS data unit, a virtual RGPS data budget processing unit, a visible satellite request processing unit and a temporary RGPS addition processing unit, and the system also includes: a temporary virtual RGPS deletion processing unit and a temporary Virtual RGPS delete processing unit drive unit. At the same time, the present invention also discloses a method for applying a virtual RGPS system. The virtual RGPS system pre-calculates and saves each virtual RGPS point data; After requesting the instruction, according to the rough position of the device to be positioned, match the virtual RGPS closest to the device to be positioned in the virtual RGPS data saved by itself, and return the visible satellite data in the virtual RGPS to the positioning session requester. The invention improves the efficiency of obtaining visible satellite data by the positioning session requesting party, increases the positioning speed, and improves user experience.

Description

technical field [0001] The invention relates to the technical field of mobile location services, in particular to a virtual global positioning system (GPS, Global Positioning System) ground receiver system and a method for applying the system. Background technique [0002] There are a total of 32 GPS satellites (24 main satellites and up to 8 spare satellites), with an orbital height of about 20,000 kilometers and a total of 6 circular orbits. At least 4 main satellites and several spare satellites are evenly distributed in each orbit. For the specific distribution of GPS satellites, see figure 1 . [0003] The World Wide Reference Network (WWRN, World Wide Reference Network) is one of the important components of the Assisted GPS (AGPS, Assisted GPS) positioning system. see figure 2 , figure 2 Shown is the schematic diagram of AGPS positioning principle. The WWRN provides the global GPS satellite auxiliary data required for AGPS positioning to the location service pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02G01S5/14G01S19/11
Inventor 刘冰
Owner HUAWEI TECH CO LTD