Baseline direction finding method, device, processor and drive test unit

A baseline, direction finding technology, applied in the field of intelligent transportation, can solve the problem of low direction finding accuracy

Active Publication Date: 2016-04-06
SHENZHEN GENVICT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a baseline direction finding method, device, processor and drive test unit to solve the problem of low direction finding accuracy in the prior art. The specific implementation is as follows:

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  • Baseline direction finding method, device, processor and drive test unit
  • Baseline direction finding method, device, processor and drive test unit
  • Baseline direction finding method, device, processor and drive test unit

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Embodiment Construction

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0055] The invention discloses a baseline direction finding method to solve the problem of low accuracy of direction finding when performing baseline direction finding in the prior art. See figure 1 As shown in the schematic diagram of the work flow, the baseline direction finding method includes:

[0056] Step S11. Determine any direction as the calibration direction, and obtain direction finding parameters, the direction finding paramet...

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Abstract

The invention relates to the field of intelligent transportation systems, and discloses a method, device, processor and road testing unit for base line direction-finding. According to the method, a calibration direction is firstly determined, and direction-finding parameters are obtained; phase differences and lengths of all base lines projected on the calibration direction according to the parameters are obtained, and according to the phase differences and lengths on the calibration direction, base line measured angles of the base lines are obtained; all obtained base line measured angles are subjected to weight fusion and are compared with incidence angles in the direction-finding parameters, weight needed in the weight fusion is obtained according to the comparison result, and according to the direction-finding angles of electromagnetic signals on the calibration direction are obtained according to the weight, direction-finding of a vehicle is achieved. By means of the method, the base lines in different directions are projected to the needed calibration direction, the base line measured angles of all base lines are obtained according to the phase differences and lengths, so that when direction finding is carried out, the base lines in different directions are utilized, and direction-finding precision is improved.

Description

Technical field [0001] The invention relates to the field of intelligent transportation, in particular to a baseline direction finding method, device, processor and drive test unit. Background technique [0002] In the field of ETC (Electronic Toll Collection, Intelligent Transportation), it is often necessary to find directions for vehicles in order to locate the position of the vehicles. [0003] In the ETC system, the devices used for direction finding include: OBU (OnboardUnit, vehicle-mounted equipment), antenna array and background controller. Any two antenna elements in the antenna array form a baseline. During direction finding, an electromagnetic wave signal is generated by the OBU. Each element in the antenna array receives the electromagnetic wave signal, and the background controller obtains each baseline in the same direction. The phase difference generated after receiving the electromagnetic wave signal is weighted and averaged, so as to obtain the phase information ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S3/14
CPCG01S3/143
Inventor 杨耿黄日文张学诚俞明良
Owner SHENZHEN GENVICT TECH
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