Method for reducing positioning drift of Big Dipper satellite navigating and positioning device

A technology of navigation and positioning and Beidou satellites, which is applied in the field of satellite positioning, can solve the problems of inaccurate positioning of Beidou navigation and positioning devices, and achieve the effect of improving accuracy and reducing positioning drift

Inactive Publication Date: 2012-10-24
HAIHUA ELECTRONICS ENTERPRISECHINA CORP
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AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for reducing the positioning drift of the Beidou satellite navigation and positioning device, and to solve the problem of inaccurate positioning of the Beidou navigation and positioning device

Method used

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  • Method for reducing positioning drift of Big Dipper satellite navigating and positioning device

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Embodiment Construction

[0014] see figure 1 , first, after setting the start time, end time, and speed threshold for processing positioning drift, perform step (S01) to obtain valid positioning data information sorted by positioning time within this period of time, and save them in the list.

[0015] Execute step (S02) set the status flag of drift point in the positioning list to No, execute step (S03) calculate the distance between two adjacent points according to the adjacent Pythagorean theorem, and execute step S04 according to the distance between two points and the positioning time Calculate the driving speed of the vehicle between adjacent anchor points at intervals. Execute step S05 to judge whether the speed of two adjacent positioning points is greater than the set speed threshold (100m / s), if it is less than the speed threshold, execute step (S03), and when it is greater than the speed threshold, execute step (S06 ) to delete the two positioning points, and then perform step (S07) to modi...

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Abstract

The invention discloses a method for reducing positioning drift of a Big Dipper satellite navigating and positioning device. The method comprises the following steps: (1) acquiring positioning data received within a certain time period and sequencing the data according to positioning time; (2) calculating the distance between two adjacent positioning points from the first positioning data point, and calculating the running speed of a vehicle according to the time interval between the two positioning points; and (3) deleting the two positioning points if the running speed of the vehicle is over-high and exceeds the possible maximum value in reality. According to the method, the positioning data information in a finally obtained positioning data list is relatively accurate positioning information free of the drift point, the positioning drift of the Big Dipper satellite navigating and positioning device can be reduced and the accuracy of the positioning data can be improved.

Description

technical field [0001] The invention relates to satellite positioning technology, in particular to a method for reducing positioning drift of a Beidou satellite navigation and positioning device. Background technique [0002] The Beidou satellite navigation system developed by my country is the third mature satellite navigation system after the US Global Positioning System (GPS) and Russia's GLONASS. On December 27, 2011, my country's self-constructed Beidou satellite navigation system officially started trial operation, providing continuous navigation, positioning and timing services to China and surrounding areas, and various positioning equipment based on Beidou satellite navigation system were also officially put into use. In addition, the US GPS satellite positioning technology has a history of decades of development, the technology is very mature, and its positioning equipment also covers all aspects of social life. However, the rapid development of the Beidou satelli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23
Inventor 钟政辉
Owner HAIHUA ELECTRONICS ENTERPRISECHINA CORP
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