A light source trajectory prediction method and system for wireless optical communication

Abstract

The invention discloses a light source track prediction method and system for wireless optical communication application, and the method comprises the steps: carrying out the prediction of the position of a target light source at the next moment according to a Kalman filter algorithm, so as to determine the prediction position information of the target light source; including the total time delayduration parameter of the tracking aiming system in the Kalman filter algorithm in the prediction process; therefore, eliminating the dynamic moving environment; bringing adverse effects of data processing time delay or mechanical motion time delay in the tracking and aiming system on position prediction; Therefore, the problem that an obvious lag phenomenon occurs in the tracking and aiming action when the tracking and aiming system tracks the target light source is avoided, the tracking lag caused by the data processing delay and the mechanical motion delay is reduced, the tracking and aiming precision is further improved, and the received light power loss caused by an alignment error is reduced.

Description

technical field [0001] The present application relates to the technical field of wireless optical communication, and more specifically, to a light source trajectory prediction method and system for wireless optical communication applications. Background technique [0002] In a wireless optical communication system, in order to increase the strength of the received optical signal and improve the signal-to-noise ratio, a light-condensing device (such as a lens) can be placed in front of the photodetector to collect the light from the communication light source. However, this method usually results in a relatively large receiving field of view. small problem. This problem can be overcome by requiring the signal receiving end and the signal transmitting end of the free space wireless optical communication system to be on the same line-of-sight optical path. [0003] The tracking and aiming technology of target light source is an important part of wireless optical communication....

AI Technical Summary

Problems solved by technology

However, due to the existence of data processing delay and mechanical motion delay in existing solutions, there is an obvious hysteresis in the tracking and aiming action of the signal receiving end for the communication light source at the signal sending end, resulting in poor performance of visible light communication and even interruption of link transmission.

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