Underwater weak light signal detection method

A weak light signal and detection method technology, applied in the field of communication, can solve the problems of optical signal attenuation, inability to detect optical signals, and light waves easily absorbed and scattered by seawater, so as to reduce the system bit error rate, realize detection, and improve the output signal. The effect of noise ratio

Pending Publication Date: 2021-11-30
XIAN UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] In related technologies, due to the complex environment of seawater channels, light waves are easily affected by seawater absorption and scattering during transmission, resulting in serious attenuation of optical signals. After long-distance transmission, the optical power at the receiving end is even lower than nanowatts. May be submerged in strong noise and cannot be detected, thus affecting the system performance of underwater optical communication

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  • Underwater weak light signal detection method
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[0061] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0062] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities ...

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Abstract

The embodiment of the invention relates to an underwater weak light signal detection method. The method comprises the following steps: preprocessing an obtained low-intensity light signal with noise to obtain a small-parameter signal; establishing an adaptive stochastic resonance system model, and taking the small parameter signal as a system input signal of the adaptive stochastic resonance system model; improving an ant colony algorithm, and optimizing system parameters in the adaptive stochastic resonance system model by using the improved ant colony algorithm; according to whether iteration of the improved ant colony algorithm is terminated or not, judging whether optimal system parameters are output or not, and if iteration is stopped, outputting the optimal system parameters; inputting the output optimal system parameters into an adaptive stochastic resonance system model, and solving and outputting stochastic resonance detection signals by using a fourth-order Runge-Kutta algorithm. According to the embodiment of the invention, adaptive stochastic resonance detection can be realized, the output signal-to-noise ratio is improved, the error rate of the system is reduced, and the method is used for detecting underwater weak light signals.

Description

technical field [0001] The present disclosure relates to the technical field of communications, and in particular to a method for detecting underwater weak light signals. Background technique [0002] In recent years, with the increase of human beings in ocean exploration, seabed monitoring and marine resources development, Underwater Wireless Optical Communication (UWOC) relies on its high transmission rate, large communication bandwidth, small delay and strong confidentiality. And many other significant advantages, it has been widely concerned and researched by people. [0003] In related technologies, due to the complex environment of seawater channels, light waves are easily affected by seawater absorption and scattering during transmission, resulting in serious attenuation of optical signals. After long-distance transmission, the optical power at the receiving end is even lower than nanowatts. It may be submerged in strong noise and cannot be detected, thus affecting t...

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Application Information

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IPC IPC(8): G06F30/20G06N3/00
CPCG06F30/20G06N3/006
Inventor 张建磊兰香田雨欣杨祎贺锋涛张斌
Owner XIAN UNIV OF POSTS & TELECOMM
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