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A positioning accuracy calculation method and device based on position information

A technology of positioning accuracy and position information, which is applied in satellite radio beacon positioning systems, measuring devices, instruments, etc.

Active Publication Date: 2022-06-28
QIANXUN SPATIAL INTELLIGENCE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a positioning accuracy calculation method and device based on position information, which solves the technical problem of positioning accuracy calculation for users in the industry

Method used

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  • A positioning accuracy calculation method and device based on position information
  • A positioning accuracy calculation method and device based on position information
  • A positioning accuracy calculation method and device based on position information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present invention provides a positioning accuracy calculation method based on position information, such as Figure 1-2 shown, as follows:

[0038] Step 1, preset the minimum value of the satellite elevation angle. Filter according to the satellite elevation angle, and exclude satellites whose satellite elevation angle is less than the preset value.

[0039] The execution steps of the preset conditions:

[0040] Step 1.1, collect all GSV sentences in an epoch, GSV (Satellites in View) refers to visible satellites, $GPGSV refers to visible satellite status output sentences, for example:

[0041] $GPGSV, 2, 1, 08, 06, 33, 240, 45, 10, 36, 074, 47, 16, 21, 078, 44, 17, 36, 313, 42*78

[0042] Standard format: $GPGSV,(1),(2),(3),(4),(5),(6),(7),…(4),(5),(6),(7) *hh(CR)(LF)

[0043] The meaning of each part is as follows:

[0044] (1) The total number of GSV statement messages; 2;

[0045] (2) Current GSV statement number: 1;

[0046] (3) Total number of visible ...

Embodiment 2

[0093] The present invention also provides a positioning accuracy calculation device based on position information, the device comprising:

[0094] The effective satellite screening unit is used to collect all GSV sentences in an epoch, analyze all GSV sentences, exclude satellites whose satellite elevation angles are less than the preset value, and obtain the remaining number of effective satellites;

[0095] The satellite ranking and signal-to-noise ratio calculation unit is used to preset the scale factor of the effective satellites involved in the accuracy calculation, sort the effective satellites, and calculate the average value of the signal-to-noise ratio of the effective satellites according to the scale factor;

[0096] The accuracy calculation unit is used to calculate the positioning accuracy according to the preset accuracy calculation model.

Embodiment 3

[0098] The present invention also provides a memory, the memory stores a computer program, and the computer program executes the following steps:

[0099] Collect all GSV sentences in an epoch, analyze all GSV sentences, exclude satellites whose elevation angles are less than the preset value, and obtain the remaining number of valid satellites;

[0100] Preset the scale factor of the effective satellites participating in the precision calculation, sort the effective satellites, and calculate the average value of the signal-to-noise ratio of the effective satellites according to the scale factor;

[0101] The accuracy calculation model is preset, and the positioning accuracy is calculated according to the accuracy calculation model.

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Abstract

The present invention provides a positioning accuracy calculation method and device based on position information. The method includes the following steps: collecting all GSV sentences in an epoch, analyzing all GSV sentences, and excluding satellites whose elevation angle is smaller than a preset value , to get the number of remaining effective satellites; preset the proportional coefficient of the effective satellites participating in the accuracy calculation, sort the effective satellites, and calculate the average value of the signal-to-noise ratio of the effective satellites according to the proportional coefficient; preset the accuracy calculation model, and calculate according to the accuracy calculation model Positioning accuracy, the preset accuracy calculation model includes three dimensions of X-axis, Y-axis, and Z-axis. The X-axis is the average value of the signal-to-noise ratio, the Y-axis is the number of effective satellites, and the Z-axis is the location point accuracy. The invention facilitates industry users to obtain accuracy calculation rules suitable for their equipment according to their daily road tests and practical data.

Description

technical field [0001] The invention relates to the technical field of positioning accuracy calculation, in particular to a positioning accuracy calculation method and device based on position information. Background technique [0002] With the development of society, people's demand for precise location is more and more urgent. At present, satellite navigation systems developed by countries around the world have been put into use, such as GPS, GLINASS, BD and so on. The accuracy evaluation of the system is not only an important part of the overall design of the satellite navigation system, but also the user needs to evaluate the positioning accuracy of the system used when positioning through the satellite navigation system to ensure that the positioning accuracy of the satellite navigation system can be used. Meet your own positioning accuracy requirements. [0003] There are many methods to describe the positioning accuracy of satellite navigation systems, the more comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 王芳
Owner QIANXUN SPATIAL INTELLIGENCE INC
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