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Laboratory simulation method of atmosphere multiple-scattered channel laser communication pulse transmission

A laboratory simulation and multiple scattering technology, applied in the field of laboratory simulation of laser communication pulse transmission in atmospheric multiple scattering channels, can solve problems such as difficulty in reducing the bit error rate of communication systems

Active Publication Date: 2016-05-25
吉林珩辉光电科技有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

Unlike simple power fading, when there is severe intersymbol interference, it is difficult to reduce the bit error rate of the communication system even if the transmit power is increased

Method used

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  • Laboratory simulation method of atmosphere multiple-scattered channel laser communication pulse transmission
  • Laboratory simulation method of atmosphere multiple-scattered channel laser communication pulse transmission
  • Laboratory simulation method of atmosphere multiple-scattered channel laser communication pulse transmission

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Embodiment Construction

[0021] In order to make the features and advantages of the method more clear, the method will be further described below in conjunction with specific embodiments.

[0022] The equipment required for this method is figure 1 As shown, it includes a laser 101, an electro-optic modulator A102, an electro-optic modulator B103, an optical transmitter module 104, a drive control circuit module A105, a control computer A106, a drive control circuit module B107, a control computer B108, and an optical communication receiver 301. The laser signal emitted from the laser 101 is incident on the optical signal input end of the electro-optic modulator A102. The output signal of the control computer A106 is transmitted to the electrical signal input terminal of the electro-optical modulator A102 after being converted by the driving control circuit module A105 into digital / analog. The output optical signal of the electro-optic modulator A102 is incident on the optical signal input end of the ...

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Abstract

The invention discloses a laboratory simulation method of atmosphere multiple-scattered channel laser communication pulse transmission. According to the method, the time impulse response function of an atmosphere multiple-scattered channel is calculated by using the Monte Carlo light tracking technique; the time-domain fluctuation data of receiving optical power is calculated by using a random phase screen-based laser atmospheric turbulence transmission numerical value simulation method; a computer is utilized to generate data signals which are subject to intersymbol interference according to the time impulse response function of the channel; and the data signals which are subject to intersymbol interference and the fluctuation influence of the receiving optical power caused by atmospheric turbulence are applied to optical signals through an electro-optic modulator. The method can simultaneously simulate intersymbol interference and the fluctuation effect of the receiving optical power and can provide atmospheric environment simulation support for the indoor performance test of an optical communication end machine.

Description

technical field [0001] The invention belongs to the technical field of atmospheric optical communication, and relates to a laboratory simulation method for laser communication pulse transmission of an atmospheric multiple scattering channel. Background technique [0002] With the rapid development of science and technology, people have higher and higher requirements for data communication. Compared with traditional radio frequency wireless communication, free space optical communication has the advantages of high security, small size of transmitting and receiving antenna, and no frequency band control, etc., and has attracted extensive attention in recent years. For the free space optical communication system working near the ground, the communication optical signal is actually transmitted in the atmospheric channel, so it is also called the atmospheric optical communication system. Suspended particles such as aerosols, haze, and fog in the atmosphere will cause serious mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B17/327H04B10/50H04B10/564H04B10/588
CPCH04B10/505H04B10/564H04B10/588H04B17/327H04B17/3911H04B17/3912
Inventor 陈纯毅杨华民徐春凤娄岩
Owner 吉林珩辉光电科技有限公司
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