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变采样率全数字相位载波解调技术

蓝天 张春熹 李立京 韩晓娟

蓝天, 张春熹, 李立京, 等 . 变采样率全数字相位载波解调技术[J]. 北京航空航天大学学报, 2008, 34(05): 503-506.
引用本文: 蓝天, 张春熹, 李立京, 等 . 变采样率全数字相位载波解调技术[J]. 北京航空航天大学学报, 2008, 34(05): 503-506.
Lan Tian, Zhang Chunxi, Li Lijing, et al. Multirate digital phase generated carrier demodulation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(05): 503-506. (in Chinese)
Citation: Lan Tian, Zhang Chunxi, Li Lijing, et al. Multirate digital phase generated carrier demodulation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(05): 503-506. (in Chinese)

变采样率全数字相位载波解调技术

详细信息
  • 中图分类号: TP 212.14

Multirate digital phase generated carrier demodulation

  • 摘要: 基于相位载波(PGC,Phase Generated Carrier)解调各环节的信号频率范围,提出变采样率解调方案,解决高采样频率下的实时全数字PGC解调问题.对干涉输出信号采用高采样率进行模数转换,提高解调带宽和动态范围.对混频相乘和低通滤波后的环节采用降低采样率处理,减少实时数字信号处理的运算量.设计变采样率全数字PGC解调系统,采用现场可编程门阵列(FPGA,Field Programmable Gate Arrays)并行实现混频相乘和低通滤波环节,采用数字信号处理器(DSP, Digital Signal Processor)实现后续解调环节,实现采样率高达1MHz的实时解调.实验结果表明频率为5kHz、幅度为1rad的被测信号可以被有效解调.

     

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出版历程
  • 收稿日期:  2007-04-20
  • 网络出版日期:  2008-05-31

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