Analyzation and Simulation of Underwater Laser Communication Based on Monte Carlo Mechanism

2015 ◽  
Author(s):  
Jiashun Huang ◽  
Yanbo Zhang ◽  
Dong'Ang Li ◽  
Shuai Ren
Keyword(s):  
Monte Carlo ◽  
Laser Communication ◽  
Underwater Laser

Simulation of stochastic resonance in underwater laser communication

2017 ◽  
Author(s):  
Li Ma ◽  
Min Fu ◽  
Nan Wang ◽  
Haiyong Zheng ◽  
Zhibin Yu ◽  
...  
Keyword(s):  
Stochastic Resonance ◽  
Laser Communication ◽  
Underwater Laser

scholarly journals Detection performance of underwater laser light screen based on Monte Carlo method

2019 ◽  
Vol 40 (3) ◽  
pp. 454-460
Author(s):  
YANG Tong ◽  
WANG Fan ◽  
NI Jinping ◽  
ZENG Hui
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Laser Light ◽  
Detection Performance ◽  
Underwater Laser

Design of Underwater Non-Coaxial Single Beam Scanning Detecting System

2016 ◽  
Author(s):  
Yayun Tan ◽  
He Zhang
Keyword(s):  
Monte Carlo ◽  
Final Stage ◽  
Monte Carlo Model ◽  
Experimental Results ◽  
Optical Simulation ◽  
Beam Scanning ◽  
Detection Range ◽  
Single Beam ◽  
System Parameters ◽  
Underwater Laser

Aiming at the necessity of torpedo detecting near field target in final stage of guidance, a non-coaxial (transmitter and receiver are not on the same axis) single beam scanning detecting and ranging system has been designed to be applied in torpedo. To study this detection system, this paper proposes a Monte Carlo simulation method for the system. The backscattering signal and target echo signal in seawater is simulated, and then the Signal-to-Backscattering-Noise (SBNR) is calculated. Furthermore, the relationship between maximum detecting distance and system parameters is calculated based on the criterion of minimum SNBR. Finally, the optimal system parameters are determined to get maximum detection range. For verifying the correctness of the theoretical models, underwater laser detection optical simulation system is designed to do target detecting experiment in a basin. The comparative analyses of the simulation and the experimental results show that the simulation results fit the experimental data well, thus the correctness of the semi-analytical Monte Carlo model is verified. The optimal parameters in single beam scanning detecting system can be determined according to the simulation and experimental results. The designed underwater laser detecting system provides a new method for the torpedo to detect underwater target in final stage of guidance.

Simulation of Photon Distribution in Underwater Laser Communication

2018 ◽  
Author(s):  
Wenshuang Wang ◽  
Min Fu ◽  
Bing Zheng ◽  
Li Ma ◽  
Zhaorui Gu ◽  
...  
Keyword(s):  
Laser Communication ◽  
Photon Distribution ◽  
Underwater Laser

scholarly journals Investigation of 3 dB Optical Intensity Spot Radius of Laser Beam under Scattering Underwater Channel

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 422
Author(s):  
Wei Wang ◽  
Xiaoji Li ◽  
Sujan Rajbhandari ◽  
Yanlong Li
Keyword(s):  
Laser Beam ◽  
Communication System ◽  
Laser Source ◽  
Laser Communication ◽  
Optical Intensity ◽  
Spot Radius ◽  
Optimal Spacing ◽  
Underwater Laser ◽  
Diversity Scheme ◽  
Intensity Spot

An important step in the design of receiver aperture and optimal spacing of the diversity scheme for an underwater laser communication system is to accurately characterize the two-dimensional (2D) spatial distribution of laser beam intensity. In this paper, the 2D optical intensity distribution and 3 dB optical intensity spot radius (OISR) are investigated due to the dominating optical intensity of laser beam being within the 3 dB OISR. By utilizing the Henyey–Greenstein function to compute the scattering angles of photons, the effects of the scattering underwater optical channel and optical system parameters on 3 dB OISR are examined based on the Monte Carlo simulation method. We have shown for the first time that in the channel with a high density of scattering particles, the divergence angle of the laser source plays a negligible role in 3 dB OISR. This is an interesting phenomenon and important for optical communication as this clearly shows that the geometric loss is no longer important for the design of receiver aperture and optimal spacing of the diversity scheme for the underwater laser communication system in the highly scattering channel.

Research Progress on Underwater Laser Communication Systems

2021 ◽  
Vol 58 (3) ◽  
pp. 0300002-30000226
Author(s):  
曾凤娇 Zeng Fengjiao ◽  
杨康建 Yang Kangjian ◽  
晏旭 Yan Xu ◽  
赵孟孟 Zhao Mengmeng ◽  
杨平 Yang Ping ◽  
...  
Keyword(s):  
Communication Systems ◽  
Research Progress ◽  
Laser Communication ◽  
Underwater Laser

Design of optical receiving antenna for underwater laser communication based on diversity array

2018 ◽  
Vol 47 (9) ◽  
pp. 903005
Author(s):  
贺锋涛 He Fengtao ◽  
石文娟 Shi Wenjuan ◽  
朱云周 Zhu Yunzhou ◽  
张建磊 Zhang Jianlei
Keyword(s):  
Laser Communication ◽  
Receiving Antenna ◽  
Underwater Laser
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