何尚平, 黄龙辉, 罗小青, 涂剑鹏. 基于直接数字频率合成器的侦察接收机的设计和控制[J]. 南昌航空大学学报(自然科学版), 2009, 23(3): 88-92.
引用本文: 何尚平, 黄龙辉, 罗小青, 涂剑鹏. 基于直接数字频率合成器的侦察接收机的设计和控制[J]. 南昌航空大学学报(自然科学版), 2009, 23(3): 88-92.
HE Shang-ping, HUANG Long-hui, LUO Xiao-qing, TU Jian-peng. The Design and Control of Scouting Receiver Based On DDS[J]. Journal of nanchang hangkong university(Natural science edition), 2009, 23(3): 88-92.
Citation: HE Shang-ping, HUANG Long-hui, LUO Xiao-qing, TU Jian-peng. The Design and Control of Scouting Receiver Based On DDS[J]. Journal of nanchang hangkong university(Natural science edition), 2009, 23(3): 88-92.

基于直接数字频率合成器的侦察接收机的设计和控制

The Design and Control of Scouting Receiver Based On DDS

  • 摘要: 提出了一种通过控制直接数字频率合成器芯片AD980产生自动/手动可调的正弦扫频信号以获得本振信号,实现了10MHz-108MHz内全频范围、特定频率范围和指定频率自动和手动搜索,自动显示搜索到的外来信号频率并掉电存储,同时可鉴别外来信号的调制方式:调频、调幅、等幅的方法.

     

    Abstract: This paper presents a way of producing automatic/manual adjustable sine sweep signal to obtain the local oscillator signal by controlling the DDS(direct digital frequency synthesizer) chip AD9850,achieving automatic and manual search within the full-10MHz-108MHz frequency range,a specific frequency range and specify the frequency,automatically displaying the search to the external signal frequency and power-down stores while identifying external signal modulation mode: FM,AM,amplitude method.

     

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