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针对卫星通信中的强窄带干扰,文中讨论了采用FPGA硬件实现高速实时FFT处理器的设计方案,并基于此FFT实现频域窄带干扰抑制。作者采用基于单级运算单元与单级数据存储单元进行级间复用的方法来完成FFT处理。所设计的方案,在进行高速FFT运算的同时,在很大程度上节省了硬件资源,有效的抑制窄带干扰。
Aiming at the strong and narrowband interference in satellite communication, this paper discusses the design scheme of high-speed real-time FFT processor based on FPGA hardware and implements the narrowband interference suppression in frequency domain based on this FFT. The author uses a single-stage computing unit and a single-level data storage unit for interstage multiplexing method to complete the FFT processing. The proposed scheme, while performing high-speed FFT operation, saves a great deal of hardware resources and effectively suppresses narrow-band interference.