Deep space optical communications (DSOC) downlink simulation with varying PPM order

Abstract During the course of a typical deep space mission like Mars Earth mission, there exist wide range operating points, due to different changes in geometry that consequently cause link budgets terms received signal and noise power. These include distance range, Sun-Earth-Probe angle, zenith angle atmospheric conditions. The with losses (background noise, pointing losses), lead capacities data rates over mission. Consequently, engineering parameters are adjusted optimized combat some these varying order get acceptable bit error probabilities. This is useful reason analyze simulate various conditions occur spatial orbital time periods resulting power level, capacity, paper details results simulations optical communication operation.