中国空间科学技术

中国空间科学技术

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广播卫星接收机PCM数字伴音解码器的研制

余玉材   

  1. 北京卫星信息工程研究所
  • 发布日期:1995-10-25

DEVELOPMENT OF PCM DIGITAL AUDIODECODER FOR DBS RECEIVER

Yu Yucai(Beijing Institute of Satellite Information Engineering, Beijing 100074)   

  • Online:1995-10-25

摘要： 论文详细研究了日本１２ＧＨｚ频段广播卫星（ＢＳ）电视中所采用的ＰＣＭ数字伴音，并结合目前中国收听收看日本直播卫星电视的特点，研制出了一种小型的ＰＣＭ数字伴音解码器。该解码器和Ｃ波段卫星接收机配合，可以替代进口的日本Ｋｕ波段卫星接收机，具有较大的经济效益．该解码器经卫星地球站检测中心测试表明：它解调出的Ａ、Ｂ两种模式数字伴音清晰、悦耳，其解调音质和进口的Ｋｕ频段卫星接收机的音质相当。

关键词: 译码器, 数字滤波器, 广播卫星, 研制

Abstract: The PCM Digital Audio for DBS television is studied in this paper.Basing on the characteristics of receiving DBS television in China, developed a smallPCM digital audio decoder. The decoder in combination with the C-band satellite receiver can replace an imported Ku-band receiver, and has potential social profit and econmical value.The decorder is tested by Satellite Earth Station Test Center, and the resultsshow that the decoder's high quality audio is as good as that of imported Ku-band receiver.