Adaptive receiving system and receiving method of wireless ultraviolet light scattered signal

A technology of scattering signals and receiving methods, applied in transmission systems, electromagnetic receivers, short-range systems, etc., can solve the problems of unstable output electrical signals of receiving systems, fluctuations of ultraviolet light signals, etc., to improve flexibility and anti-interference. security, strong anti-interference ability, and the effect of improving security performance and stability

Inactive Publication Date: 2018-09-18
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a wireless ultraviolet light scattering signal adaptive receiving system, which solves the problem that the output electrical signal of the receiving system is unstable due to the fluctuation of the ultraviolet light signal

Method used

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  • Adaptive receiving system and receiving method of wireless ultraviolet light scattered signal
  • Adaptive receiving system and receiving method of wireless ultraviolet light scattered signal
  • Adaptive receiving system and receiving method of wireless ultraviolet light scattered signal

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Embodiment

[0075] Using the wireless ultraviolet light scattering signal adaptive receiving system of the present invention, the receiving system is such as figure 1 As shown, the non-direct-view communication method is used for reception, the communication distance is 100m, the ultraviolet light source is an LED light-emitting tube with a center wavelength of 255nm, the modulation method is OOK modulation, the receiving photoelectric converter is a Hamamatsu R754 photomultiplier tube, and the output of the receiving system is The threshold is set to 3V, the gain of the preamplifier 1 is set to 100 times, and the output of the AGC amplifier 3 is connected to the PGA amplifier.

[0076] The weak current signal output by the photomultiplier tube is converted and amplified in the preamplifier 1. The photomultiplier tube converts the received ultraviolet light signal into a negative current -0.01mA. The preamplifier 1 is used as a two-stage amplifier. The first stage is an inverting amplifie...

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Abstract

The invention discloses an adaptive receiving system of a wireless ultraviolet light scattered signal. The system comprises a pre-amplifier circuit, a low-pass filter circuit, and an AGC amplifier, wherein the AGC amplifier, an A / D collection circuit, and an MCU data processing circuit form an annular link, the MCU data processing circuit is further connected with a data display unit, the AGC amplifier is connected with a high-precision reference power supply, the pre-amplifier circuit is a two-stage amplifier circuit, the first stage of the two-stage amplifier circuit is an inverter amplifier, and the second stage thereof is a fixed gain amplifier. When an ultraviolet light dynamic signal is received, the amplitude of a receiving end fluctuates drastically, leading to high bit error rate.The receiving system solves the above problem. The ultraviolet light communication system can better receive scattered signals of a large dynamic range.

Description

technical field [0001] The invention belongs to the technical field of wireless ultraviolet light communication, and relates to an adaptive receiving system for wireless ultraviolet light scattering signals, and also relates to an adaptive receiving method for wireless ultraviolet light scattering signals. Background technique [0002] With the development of communication and network technology, wireless communication technology plays an increasingly important role in military activities and people's production and life. As a new wireless communication method, wireless ultraviolet communication has the most outstanding advantage that it is not easy to be detected and intercepted. It is very suitable for short-distance communication requirements with high anti-interference performance. more attention. The use of ultraviolet LEDs as light sources has the following advantages: (1) LEDs have long life and low power consumption; (2) shock resistance and environmental protection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/114H04B10/60H04B10/69
CPCH04B10/114H04B10/60H04B10/6931
Inventor 赵太飞杨黎洋郭嘉文李永明
Owner XIAN UNIV OF TECH
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