| Autor: |
Туровський, О. Л., Блаженний, Н. В. |
| Předmět: |
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| Zdroj: |
Science-Based Technologies; 2021, Vol. 50 Issue 2, p140-146, 7p |
| Abstrakt: |
Modeling of the operation of free-space optical communication (FSO) under the effects of gamma radiation, emitted by a mixture of radioactive substances, released into the environment as a result of a man-made disaster is an integral part of the general task of ensuring their radiation resistance. The analysis of quantitative indicators of the initial parameters of the mathematical model describing the order of the FSO operation and the analysis of radiation resistance of the components of the FSO construction scheme show that the efficiency of its operation under radioactive contamination conditions will be affected by gamma radiation. The main radiation-unstable element under its effects will be the infrared input signal receiver, which will lose its detection ability depending on the power values and the dose of gamma radiation. The article analyzes the operation of FSO receivers in the probable man-made disaster at a radiation-hazardous object and presents the mathematical model, which describes the FSO operation taking into account the possible effects of gamma radiation on the detection ability of the infrared input signal receiver. The developed model includes the descriptions of step-by-step procedures for receiving and processing the input signal: generating a pseudo-random binary sequence of the useful signal planned for the transmission through the optical channel; conversion of the binary sequence into an electrical signal; conversion of the electrical signal into an optical signal; forming the optical power of the signal transmission channel; reception and conversion of the input optical signal into the electrical one at the input receivers; conversion of the input electrical signal into binary bits. In the future, the proposed model will make it possible to analyze the degree of reduction of the detection ability of FSO receivers, which, in turn, will help to substantiate the recommendations, aimed at improving the efficiency and feasibility of FSO under certain conditions of radiation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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