Global position system (GPS) drifting processing method based on ACC signals and device using the same

A technology of a processing device and a processing method, applied in the directions of measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve the problem of affecting the accurate acquisition of GPS equipment position information, affecting the accurate calculation of mileage information of GPS equipment, and the position speed obtained by GPS equipment. and inaccurate information such as directions

Active Publication Date: 2013-06-19
CHINA TELECOM CORP LTD
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AI Technical Summary

Problems solved by technology

However, due to the drift problem of the Global Positioning System (GPS), it affects the accurate acquisition of GPS equipment position, speed and other information, and affects the accurate calculation of GPS equipment mileage and other related information.
[0003] The drift problem is that when the positioning signal is weak, the position (longitude, latitude), speed and direction information obtained by the GPS device is inaccurate.

Method used

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  • Global position system (GPS) drifting processing method based on ACC signals and device using the same
  • Global position system (GPS) drifting processing method based on ACC signals and device using the same
  • Global position system (GPS) drifting processing method based on ACC signals and device using the same

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Embodiment Construction

[0035] In response to the above-mentioned drift problem, many merchants use the following three methods to improve the positioning accuracy of GPS equipment. One is to increase the number of channels of the positioning module of the GPS device. At present, the accuracy of the positioning module mainly includes 12 channels, 24 channels and 32 channels; For GPS devices with differential calculation and other processing methods, on the basis of reliable hardware performance, effective algorithms are added to improve GPS stability and reduce drift.

[0036] However, the disadvantage of the above method is that the GPS drift filtering process is not effectively combined with the situation in the vehicle and the vehicle running condition, and the drift rate is obviously large, and the static drift rate even reaches about 3%.

[0037] The invention combines the ACC signal detection in the vehicle with the speed analysis at adjacent time points when the vehicle is running, and effecti...

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Abstract

The invention discloses a global position system (GPS) drifting processing method based on ACC signals and a device using the GPS drifting processing method based on the ACC signals. The GPS drifting processing method based on the ACC signals includes the following steps: judging whether a vehicle is in a parking state or a driving state according to the ACC signals inside the vehicle or speed of the vehicle; if the vehicle is judged to be in the parking state, setting longitude, latitude, and mileage value into a constant value, and setting speed into zero; if the vehicle is judged to be in a driving state, setting a first speed threshold value and a second speed threshold value, if the speed is reduced below the first speed threshold value or increased above the second speed threshold value, the vehicle is judged to be in a drifting state, and abandoning current GPS information uploading and mileage accumulation. The invention can effectively shield drifting and improve positioning accuracy of the GPS.

Description

technical field [0001] The invention is applied to an intelligent traffic positioning system, belongs to the technical fields of sensing technology and the Internet of Things, and in particular relates to a GPS drift processing method and device based on an ACC signal. Background technique [0002] The emergence of the Global Positioning System (GPS) allows us to use this technology to obtain relevant information such as the position and speed of the positioning device at any time, which has greatly changed our lives. However, due to the drift problem of the Global Positioning System (GPS), it affects the accurate acquisition of information such as the position and speed of the GPS device, and affects the accurate calculation of the mileage of the GPS device and other related information. [0003] The drift problem is that when the positioning signal is weak, the position (longitude, latitude), speed and direction information obtained by the GPS device is inaccurate. GPS dr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/37
Inventor 王伟罗星
Owner CHINA TELECOM CORP LTD
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