基于射频数字化的多通道信号处理方法

Multi-channel signal processing method based on RF digitalization

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。

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.