一种星地自动校频的实现方法  

An Implementation Method for Automatic Frequency Calibration from Ground to Satellite

作　　者：王毅[1] 惠腾飞[1] 刘晓旭[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2015年第5期28-31,共4页Space Electronic Technology

摘　　要：对于多路的低速数据卫星通信业务应用,在实现这种通信业务时,由于多种因素的影响,通信系统中通常会引入较大的频偏,而这种频偏对地面接收系统的影响是非常大的,为了避免大频偏的影响,文章在这里介绍一种星地自动校频的实现方法,实现星地通信过程中频偏的校正功能。Bigger frequency offset can be imported to the satellite communications usually for the influence of various factors when the satellite communication services of multi-channel and low-speed data are realized. The influence for receiv- ing earth system will be very large because of the big frequency offset. A method for automatic frequency calibration will be introduced herein for avoiding the influence to realize frequency calibration function.

关 键 词：卫星通信 频偏 自动校频 

分 类 号：TN949.12[电子电信—信号与信息处理]