نوع مقاله : مقاله پژوهشی
نویسندگان
دکتری
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
LEO satellites orbit very fast respect to the Earth stations, so the tracking of these satellites is important. But due to some challenges, such as structural deformations caused either by loads or by the temperature gradient, atmospheric distortion, or azimuth track unevenness, the position of beam is slightly different from the antenna position as measured by the encoders. Thus, the monopulse technique as the most accurate type of Auto-tracking techniques is used and analyzed. Also, the reduction of beam error and increment of received power versus signal to noise ratio are investigated. Finally, estimation parameters such as variance, mean and RMSE of monopulse technique versus signal to noise ratio are investigated.
)