Quick searching technology for satellite DVB-S/S2 carriers

Abstract:

New features and development status of Digital Video Broadcasting(DVB)-S2 are analyzed compared to DVB-S. This paper proposes a novel search program of the DVB-S2 signal reception parameters based on TDQR-C005F, focusing on the search technologies of carrier center frequency and bandwidth parameters about the broadband signals，and three-step search technology and implementation of the algorithm concerning parameters of the signal channel including symbol rate，coding rate and pilot frequency. The algorithms and systems can meet the detection and identification requirements of the DVB-S2 burst signal compared to traditional algorithms. Experiments show that，the system can lock those conventional DVB-S/S2 signals accurately except for DVB signals whose bandwidth is below 2 MHz，reaching the search rate of 97.5%.