| 遥测接收机基带信号处理的数字化实现方法 |
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| 引用本文： | 江悟,舒逢春,张秀忠.遥测接收机基带信号处理的数字化实现方法[J].中国科学院上海天文台年刊,2011(0). |
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| 作者姓名： | 江悟 舒逢春 张秀忠 |
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| 作者单位： | 中国科学院上海天文台; |
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| 基金项目： | 国家自然科学基金(10973033); 上海市自然科学基金(09ZR1437300) |
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| 摘 要： | 根据VLBI系统中接收的遥测信号基带信号的特点,介绍了利用虚拟无线电技术实现遥测接收机基带信号处理的基本原理,并分别概述了接收机的载波解调、副载波解调、数据转换环3个功能模块的数字化实现方法。仿真结果和实测数据表明,利用虚拟无线电技术能够很好地实现对遥测信号的解调和同步工作,又因该技术本身具有容易更新、方便添加接口、可并行化等优点,这种基于虚拟无线电技术的遥测接收机基带处理系统,将能够为遥测、导航、天线组阵等相关技术提供很好的实验和应用平台。
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| 关 键 词： | 数字信号处理 虚拟无线电 遥测接收机 解调 同步 |
Digital Implementation Method of Baseband Signal Processing in Telemetry Receiver |
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| JIANG Wu,SHU Feng-chun,ZHANG Xiu-zhong.Digital Implementation Method of Baseband Signal Processing in Telemetry Receiver[J].Annals of Shanghai Observatory Academia Sinica,2011(0). |
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| Authors: | JIANG Wu SHU Feng-chun ZHANG Xiu-zhong |
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| Institution: | JIANG Wu,SHU Feng-chun,ZHANG Xiu-zhong (Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030) |
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| Abstract: | Based on the characteristics of the telemetric baseband signal received and processed by VLBI stations,the virtual radio technology was introduced to process the baseband signal in telemetry receiver in this paper.The digital implementation methods of three functional units in the receiver,including carrier demodulation,subcarrier demodulation and data transition tracking loop were described here.Indicated from the results of simulations and real data processing,virtual radio technology performs effectively... |
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| Keywords: | digital signal processing virtual radio telemetry receiver demodulation synchronization |
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