Non-line-of-sight target positioning system and method based on polarized ultraviolet light scattering transmission

Abstract

The invention provides a non-line-of-sight target positioning system and a non-line-of-sight target positioning method based on polarized ultraviolet light scattering transmission, and solves the problem that a lot of cooperative targets are required when ultraviolet light is used for positioning in the prior art. The system comprises a polarized ultraviolet light emitting module and a polarized ultraviolet light detection module, the polarized ultraviolet light emitting module comprises an ultraviolet light emitter, a polarizer and a beam expander; the polarized ultraviolet light detection module comprises a focus lens, a polarization analyzer, an optical filter, an ultraviolet light detector and an optical signal processing module; ultraviolet light is emitted by the ultraviolet light emitter and is emitted to the atmosphere through the polarizer and the beam expander, scattered polarized ultraviolet light is scattered and transmitted to the receiving end through the atmosphere, and the transmitted polarized ultraviolet light passes through the focus lens, the polarization analyzer and the optical filter and then reaches the ultraviolet light detector. And the received polarized ultraviolet light is processed through an optical signal processing module to obtain a transceiving distance, and a target is positioned in combination with the judged azimuth angle.

Description

technical field [0001] The invention belongs to the fields of ultraviolet light communication and polarized light measurement, and in particular relates to a non-line-of-sight target positioning system and method based on polarized ultraviolet light scattering transmission. Background technique [0002] In ultraviolet light communication, the sun-blind ultraviolet light between 200 and 280nm, which is strongly absorbed by ozone, is used as the working band, and the scattering effect of atmospheric particles on light is used to realize information transmission. Under the environment, it has technical advantages such as strong anti-interference ability, good confidentiality performance and non-line-of-sight communication, which can effectively make up for the defects of wired and wireless communication. Therefore, ultraviolet light communication is used as a means of dedicated local area confidential communication, or As a supplement to other means of communication under certa...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the existing problems of long-distance communication, large background interference, and inaccurate positioning when there are many cooperative targets when positioning by ultraviolet light, and to provide a polarization-based A non-line-of-sight target positioning system and method for ultraviolet light scattering transmission. The system and method can realize target positioning between two points, require less cooperative targets, and have a simple system structure, which is easy to implement, and has the characteristics of fast positioning speed and high efficiency.

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