Performance Analysis of Mid-Far Infrared Wave in Satellite-Ground Link

Based on the basic theory of laser communication in the atmosphere, the effects of wavelengths, transmission distance, and visibility on communication link are studied; considering the restriction parameters in the satellite-ground communication link, the outage probability, fade statistic, intensity fluctuation and bit error rate of OOK/BPSK modulation are derived; the link budget is discussed; the results show that mid-far infrared wave has better transmission performance in atrocious atmosphere compared with the near-infrared wave, which could become an optimization choice in satellite-ground downlinks.