Satellite Passes Simulation and Calculating the Satellite Rise and Set Times for the Site

One of the most important issues in the productivity of the satellites is the mode timing and the automatic writing of the scenario on-board of the satellite with regard environmental conditions. In order to have the capability to make flight scenarios for missions sent from ground stations or missions that are generated automatically, on board timing forecastalong with the time to reach the station or the photo target will be necessary. On board automatic generation of the scenarios will reduce the dependency of the satellite to ground station. Calculation of the satellite rise and set times, without the satellite passes and orbit disturbances simulation, would not be possible.This paper presents formula for the satellite passes simulation, algorithm and time prediction computation modeling using keplerian orbital parameters and reduces the size of the calculation utilizing of semimajor axis of the orbit to be used on the board of satellite. To reduce the volume of calculations, it will be necessary to use numerical methods for finding function minimums or roots. semimajor axis of the orbit will decrease the numerical computation to a great extent using the algorithm presented in this paper.