基于射频数字化的多通道信号处理方法 |
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作者姓名: | 操礼长 谢学东 邓忠杰 |
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作者单位: | 中国西安卫星测控中心 |
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摘 要: | 针对传统的卫星测控射频信号处理中存在的过程复杂、通道数量不多等缺点,提出了采用射频数字化技术,直接在上下行射频与基带之间进行信号转换,大大简化了射频前端设计;针对多路频分宽带信号,设计了二级滤波模式,较好地适应了多种卫星测控体制的需求;采用了超奈奎斯特架构,有效提升了前端的集成度及可靠性.
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关 键 词: | 多相滤波 二级滤波 超奈奎斯特架构 卫星测控 |
Multi-channel signal processing method based on RF digitalization |
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Authors: | CAO Lichang XIE Xuedong DENG Zhongjie |
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Institution: | (Xi'an Satellite Control Center,Xi'an 710043,China) |
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Abstract: | In view of the disadvantages of the traditional satellite TT & C RF signal processing, such as the complicated process and the small number of channels, the RF digital technology is used to directly convert the signal between the up-down RF and the baseband, the design of the RF front-end is greatly simplified. The two-stage filtering mode is designed for the multi-channel wideband signal, which is suitable for the requirements of various satellite TT & C systems, and the Super Nyquist architecture is adopted, which effectively improve the front-end integration and reliability. |
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Keywords: | Polyphase filtering Two-stage filter Super Nyquist architecture Satellite TT&C |
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