Measuring method for environment surface reflectivity spectrum in visible light diffusion communication

Abstract

The invention discloses a measuring method for an environment surface reflectivity spectrum in visible light diffusion communication. A spectrum under the reflection effect of a to-be-measured environment surface material and a spectrum not under the reflection effect of the to-be-measured environment surface material are subjected to sweeping survey through an integrating sphere and a broadband spectrum light source, and a relative reflectivity spectrum of the to-be-measured environment surface material is obtained; the spectrum under the reflection effect of the to-be-measured environment surface material and the spectrum not under the reflection effect of the to-be-measured environment surface material are subjected to sweeping survey through the integrating sphere and a monochromatic light source, and the absolute reflectivity of the to-be-measured environment surface material for monochromatic light is acquired; the obtained absolute reflectivity of the monochromatic light serves as a reference, and the absolute reflectivities of other wavelength light within the broadband spectrum range are acquired; the obtained absolute reflectivities of all the wavelength light are spliced, and an absolute reflectivity spectrum within the whole wavelength range is obtained. According to the measuring method, the absolute reflectivity spectrum of the environment surface material can be accurately and efficiently obtained, and the measuring efficiency for the reflectivity in visible light diffusion communication is improved.

Description

technical field [0001] The invention relates to the technical field of wireless optical communication, in particular to a method for measuring the reflectance spectrum of an environment surface in visible light diffuse communication. Background technique [0002] At present, in visible light diffuse communication, the optical signal will inevitably undergo multiple reflections and interactions with the surrounding environment due to multipath propagation. Traditional infrared light wireless communication also involves the measurement of the reflectivity of optical signal reflective materials. The reflectivity of monochromatic light The output power of light with or without reflection can be captured by a power meter, and then the two parts can be obtained by dividing the two parts directly. [0003] Unlike traditional infrared light wireless communication, visible light diffuse communication uses a wide-spectrum light source instead of a monochromatic light source, so the re...

AI Technical Summary

Problems solved by technology

[0003] Unlike traditional infrared light wireless communication, visible light diffuse communication uses a wide-spectrum light source instead of a monochromatic light source, so it is impossible to obtain the reflectance of reflective materials through traditional low-cost measurement methods

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