Abstract: The modulation recognition of satellite communication signal plays a significant role in non-cooperative communication. Aiming at the issue of modulation recognition in a rainfall environment, a model of the rainfall environment was built and then blind modulation recognition was studied in this environment. When building model, effect of antenna noise temperature caused by the rain attenuation was taken into account. To recognizes four modulation adopted by DVB-S2 standard, the algorithm based on higher-order cumulant was used. The results show that correct rates of modulation recognition change little according to different rainfall environment and the recognition accuracy is relatively high, quantitatively more than 90%.

Key words: satellite communication, ACM, DVB-S2, modulation recognition, higher-order cumulant