Satellite-to-Ground FSO System Based on Multiaperture Receivers as an Optimization Solution for Strong Turbulence and Fog Conditions

Abstract

Abstract Satellite-to-Ground Downlink-Free Space Optics (SatGD-FSO) communication systems are emerging as the key driver for telecom investment, with several factors driving this convergence. It is attractive to minimize the size, weight, and power profiles of the space terminals by utilizing high affectability and huge accumulation collection zone ground terminals. Multiaperture coherent receivers using spatial diversity approached is considered on the attractive solution can fulfill this necessity and have numerous focal points over the single enormous opening cognizant recipients. The effects of atmospheric and climatic conditions using various dynamic system parameters have been investigated as a function of bit-error-rate (BER) performance of multiaperture coherent receivers. Types of orbits, aperture averaging, zenith angle, transmit optical power, and modulation schemes are systematically investigated and compared to the SatGD communication system. The proposed solution with a maximum throughput of 2.5 Gbps is useful for a plan and optimization improvement of the SatGD-FSO systems.