Physical Investigation of Space, Dosimetry of Space Ionizing Ray Effect (Van Allen belts, Galactic Cosmic Rays and Solar particles) and Plotting Dose Map for Satellite Circular Missions

One of the main factors for satellite design is simulating of total ionizing dose due to space ionizing rays in devices used in space. By measurement of induced dose based on available data in different altitudes, expenses of designing, satellite weight and amount of needed fuel will be reduced. Optimum design of satellite for protecting satellite against ionizing radiation has considerable effect on reduction of manufacturing expenses. TID effect should be calculated for each mission separately. The main parameters for starting simulation are perigee and apogee altitudes, inclination, launch date and space environment condition. In this article, the induced dose for missions with equal apogee and perigee points and the most dangerous altitudes for launching satellites have been simulated. To gain this goal, simulations have been performed in different inclinations from 500km to 58000km. by plotting result of all these simulations for launching satellite in minimum solar activity, a dose map has been achieved for different altitudes and inclinations. Absorbed dose in this dose map is sum of absorbed dose of all radiations in space environment. Simulation results illustrate that the maximum dose are related to low inclinations in altitudes between 11000 and 12000. The result of calculated and simulated results have been confirmed and evaluated by ECSS documents. These results have been simulated by using the last version of OMERE radiation package.