期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2012
卷号：2
期号：4
页码：11-20
出版社：International Journal of Soft Computing & Engineering
摘要：Edusat Satellite is the satellite dedicated for fulfillment the needs of education and its effective usage requires a network comprising Hub, Teaching End (Studio) and Receiving Terminals. The present study is related with Edusat- network of Madhya Pradesh Bhoj (Open) University, which includes Hub dedicated for higher and distance education, Studio and 40 Satellite Interactive Terminals with Edusat-network provided by Indian Space Research Organization (ISRO). These SITs have been installed in urban, rural and tribal areas. Detail study of equipments of hub, studio and receiving terminals was taken up. Target group was chosen and most easy and suitable way of virtual class was identified. Various factors affecting quality of audio/video were drawn from the study and content/presentation of video lectures were analysed. Recorded video lectures and live lectures were telecasted for 177 working days and observations related to BER (Bit Error Rate) correlating problems encountered during operation of terminals, audio-visual quality of lectures, skill and response of operators were made. We aimed at identifying the scope of enhancement in audio-video quality of the material telecasted through Edusat. The study is based on the network which has been created mainly for the students of rural and tribal areas. On the basis of observations and BER data collected from hub, the present study makes findings and suggests those possibilities which can enhance the audio-video quality of the telecast without any major change in satellite’s band width and hub, and with minimum increase in cost and expenditure.
关键词：Edusat- Satellite dedicated for education; SIT-;Satellite Interactive terminals; BER- Bit Error Rate; RCST-;Return Channel Satellite Terminal; LNB- Low Noise Block down;converter; GCU- (Gateway Cannel Unit); Gramsat- Satellite;based project for villages; TDCC- Training and Development;Communication Channel.
