Triangular positioning system and method based on visible light
A technology of triangulation positioning and visible light, which is applied in positioning, radio wave measurement systems, measuring devices, etc., can solve the problems affecting ranging and positioning accuracy, lack of accurate and operable light incident angle measurement methods, difficult signal synchronization and time measurement and other problems, to achieve the effect of convenient synchronization and control, and simple hardware
Inactive Publication Date: 2016-04-06
WUHAN POST & TELECOMM RES INST CO LTD
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Abstract
The invention belongs to the technical field of communication and space positioning, and especially relates to a triangular positioning system and method based on visible light. A to-be-positioned target employs an LED lamp for transmitting a visible light signal, and a signal receiving end employs a plurality of light detectors with known coordinates and receives a light signal from an LED. The light detectors enables measured signals to be gathered in a processing unit, and the phase difference is calculated, thereby obtaining an optical path difference from the LED to the plurality of light detectors. The coordinates of the signal receiving end can be calculated according to the triangle geometric principle. According to the invention, a transmission end is simple in hardware, and can be extended to a plurality of positioning targets. Moreover, all calculation and processing can be completed at the receiving end, thereby facilitating the synchronization and control. Therefore, the system and method are low in cost and are wide in application range.
Application Domain
Position fixation
Technology Topic
PhysicsOptical path +7
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