| 基于FPGA的L波段卫星数字信标机 |
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| 引用本文： | 李锐,赵来定.基于FPGA的L波段卫星数字信标机[J].南京邮电大学学报(自然科学版),2012,32(2):24-27. |
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| 作者姓名： | 李锐 赵来定 |
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| 作者单位： | 1. 南京邮电大学电子科学与工程学院,江苏南京,210046
2. 南京邮电大学通信与信息工程学院,江苏南京,210003 |
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| 基金项目： | 江苏省高校自然科学基金(10KJD51005,10KJD51006);南京邮电大学青蓝计划(NY206036)资助项目 |
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| 摘 要： | 描述了一种新型的零中频L波段卫星信标接收机。本接收机同时运用了零中频和数字信号处理技术。使用Matlab软件辅助设计数字滤波器,结果表明当滤波带宽越窄,信噪比越高。当输入测试信号频率为950.5 MHz,-80 dBm时,接收机输出-1 dBm,信噪比为30 dBm;当输入信号为-100 dBm时,接收机输出为-20 dBm,信噪比为15 dBm。
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| 关 键 词： | 卫星信标机 DVB-S FFT L波段 |
L Band Digital Satellite Beacon Receiver Based on FPGA |
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| LI Rui
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ZHAO Lai-ding.L Band Digital Satellite Beacon Receiver Based on FPGA[J].Journal of Nanjing University of Posts and Telecommunications,2012,32(2):24-27. |
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| Authors: | LI Rui ZHAO Lai-ding |
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| Institution: | 1.College of Electronic Science & Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210046,China2.College of Telecommunications & Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China |
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| Abstract: | A novel kind of L band satellite beacon receiver is described in this paper.The Zero IF down convert concept is used to the receipt of the satellite beacon signal.Matlab software is used to design the FIR filter,the result shows the narrower of the filter band the better of S/N ratio.Digital signal processing is also used in the receiver.When the test input signal is-80 dBm 950.5 MHz,the output of the receiver is-1 dBm,thus s/n is 30 dBm.When the input signal is-100 dBm,the output of the receiver is also-20 dBm,thus s/n is 15 dBm. |
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| Keywords: | satellite beacon receiver DVB-S FFT L band |
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