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題名 | Direct Broadcast Experiment of Digital TV Signals on ROCSAT-1 ECP Payload=中華衛星一號通訊酬載上之數位電視訊號直播實驗 |
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作者 | 陳永昌; 王小川; 江簡富; 蔡木金; | 書刊名 | Terrestrial, Atmospheric and Oceanic Sciences |
卷期 | 增刊 民88.03 |
頁次 | 頁165-182 |
分類號 | 447.964 |
關鍵詞 | 中華衛星一號; 通訊酬載; 數位電視訊號直播; Video and audio compression; Scalable coding; Ka-band characteristics; |
語文 | 英文(English) |
英文摘要 | As one of the three communication experiments to be performed on the ECP payload of the LEO satellite ROCSAT-1, the direct broadcasting of digital TV signals using Ka-band experiment has been well planned and prepared. In this experiment, suitable compression and protection methods for the digitized video and audio signals in the LEO and Ka-band environments will be studied. The bitrate will be between 6.6 and 3.3 Mbps, depending on the affordable link budget. The carrier frequency of the up- link is 28.25 GHz, while that of the downlink is 18.45GHz. Because of the strong dependence of system performance on the channel characteristics, a realistic Ka-band channel model suitable for the subtropic Taiwan area will also be developed. |
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