基于RFSoC的超宽带雷达信号多数据率抽取算法实现OA

In order to address the processing bottleneck of gigabit-level raw data for ultra-wideband radar in high sampling rate scenarios,as well as the inherent limitations of traditional polyphase filtering decimation tech-nologies in rate switching flexibility,hardware resource consumption and cross-clock domain timing coordination,this paper proposes a dynamic multi-data-rate decimation algorithm based on radio frequency system-on-chip(RF-SoC).This algorithm utilizes the super digital signal processor(SuperDSP)within the RFSoC and combines the polyphase parallel filtering mode to complete anti-aliasing filtering and decimation.The actual test results demon-strate that the proposed algorithm can achieve 1-to-8 decimation for 2.4 GS/s in-phase/quadrature(IQ)signals,with a switching time as low as 40 ns and out-of-band suppression better than 40 dB,and that the logic resource utilization rate of field programmable gate array(FPGA)is significantly reduced with no additional resource con-sumption in digital signal processor(DSP).The scheme proposed in the paper provides a technical path with both engineering feasibility and excellent performance for multi-mode adaptive processing of ultra-wideband radar.