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

A technology of processing device and GPS antenna, applied in the direction of measurement device, satellite radio beacon positioning system, instrument, etc. Problems such as accurate calculation of GPS equipment mileage information

Active Publication Date: 2015-07-01
CHINA TELECOM CORP LTD
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  • Claims
  • Application Information

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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 drift problem, many businesses use the following three methods to improve the positioning accuracy of GPS equipment. The first is to increase the number of channels of the GPS device positioning module. At present, the accuracy of the positioning module mainly includes 12 channels, 24 channels and 32 channels; the second is to strengthen the GPS device to receive satellite signals, and select a GPS positioning antenna with high sensitivity and stable performance; The third is to choose GPS equipment with processing methods such as differential calculation, on the basis of reliable hardware performance of the equipment, adds effective algorithms to improve GPS stability and reduce the occurrence of drift.

[0036] However, the disadvantage of the above method is that the GPS drift filtering process is not effectively combined with the in-vehicle situation and the vehicle operation situation, and the drift rate is obviously large, and the static dr...

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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 field 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 obtain the location, speed and other related information of the positioning device at any time with this technology, which has greatly changed our lives. However, due to the drift problem of the Global Positioning System (GPS), the accurate acquisition of information such as the position and speed of the GPS device is affected, and the accurate calculation of the related information such as the mileage of the GPS device is affected. [0003] The drift problem is that when the positioning signal is weak, the information such as the position (longitude, latitude), speed and direction obtained by the GPS device is inacc...

Claims

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Application Information

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