Design And Research On Technology HD Transmission Of Satellite Station

SDTV is replaced by HDTV gradually,the demand for HD programmer satellite transmission is increasing day by day.with the gradual popularization of HD,Heilongjiang TV Station grasp the chance to take the lead in improving satellite television to HD.thus,Heilongjiang TV Station enhances its influence,improves its competitiveness and promotes its overall real strength in the national radio and TV industry.With the fact that Heilongjiang TV Station has become the first satellite TV that is covered by HD satellite as the background and after a year’s practice,the paper finds the shortage of the remote star TV,proposes the plan to become star TV automatically by degrees and finally build a automatic star TV system for HD programmers.the paper proves the feasibility of it theoretically and practically,which not only is benefit for the popularization of star TV nationwide but also provides case study for the programmer construction of other provincial TV stations.Based on the analysis and summarization of the status quos of the HD transmission the paper firstly expounds on the demand of HD transmission of Heilongjiang TV Station,analyses the shortages of current remote transmission and provides the overall train of thought about HD transmission.secondly,the paper elaborates the basic theories of transmission and come up with the whole scheme of HD transmission.last but not the least,the paper copes with the difficulties in the construction of HD transmission.through analyzing and elaborating remote encryption and high precision link calculation at great length.