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
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[0017] The present invention will be further described in detail below in conjunction with the drawings and embodiments.
[0018] Such as figure 1 As shown, the target to be positioned uses LED lights to send visible light signals, and the signal receiving end has at least 3 light detectors with known coordinates to simultaneously receive light signals from the LED lights. figure 1 Among them, D1, D2, and D3 are 3 unevenly distributed photodetectors. The sending frequency of the LED light at the sending end is ω 1 , The initial phase is q 1 Sine wave, namely sin(ω 1 t+q 1 ). There are two different optical detectors D1 and D2 at the receiving end, and the optical signal received by D1 is expressed as: S 1 =A 1 sin(ω 1 t+ω 1 t 1 +q 1 ), where A 1 Is the gain, t 1 It is the transmission delay of the optical signal to the optical detector D1. The optical signal received by the optical detector D2 is expressed as: S 2 =A 2 sin(ω 1 t+ω 1 t 2 +q 1 ), where A 2 Is the gain, t 2 It is ...
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