SNR and transmission error rate for remote laser communication system in real atmosphere channel

作者：Li, Hanshan^*; Sang, Xiaoyue

来源：Sensors and Actuators A: Physical , 2017, 258: 156-162.

DOI：10.1016/j.sna.2017.03.007

• Laser communication
• Photoelectric detection
• Atmospheric attenuation
• SNR
• Atmospheric turbulence

Performance of remote laser communication system fluctuates greatly due to influence by atmospheric turbulence, it is difficult to assess its system error performance effectively. On the basis of the atmospheric attenuation channel and atmospheric turbulence channel, this paper establishes the integrated computation signal-to-noise ratio(SNR) function and transmission error rate function under the condition of atmospheric attenuation and the atmospheric turbulence, analyzes the affecting factors of the transmission error rate under two kinds of channel in remote transmission, calculates the relation between atmospheric attenuation coefficient and haze particle size under different visibility in atmospheric attenuation channel, as well as the relationship between the optimal threshold and intensity fluctuation under different transmitting powers in atmospheric turbulence channel. Through the test in atmospheric turbulence channel, results show that light intensity fluctuation is the main factor causing low system performance within a certain range of background noise, the new calculation method of SNR makes the variation between the actual system bit error rate and the achievable minimum bit error rate in theory several orders of magnitude. The models can effectively assess the performance of laser communication system under atmospheric attenuation and atmospheric turbulence, and provide a reference for relevant researches.

• 出版日期2017-5-1
• 单位西安工业大学