基于ⅡR抗混叠干扰滤波器的相干跳频同步技术研究  

Research on Coherent Frequency Hopping Synchronization Technology Based on ⅡR Anti-aliasing Filter

作　　者：钟都都 张伟科 马啸 万桂斌 曾值 高岩 ZHONG Dudu;ZHANG Weike;MA Xiao;WANG Guibin;ZENG Zhi;GAO Yan(Rocket Force Institute,6Beijing 10009,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]火箭军研究院,北京100096 [2]中国运载火箭技术研究院,北京100076

出　　处：《计算机测量与控制》2022年第7期187-193,共7页Computer Measurement &Control

摘　　要：无线通信波形设计中,扩频通信是常用的抗干扰设计体制;其中,相干跳频波形因为具有更好的抗干扰性能而受到广泛研究,相干跳频波形的抗干扰性能也与抗干扰滤波器的性能成正相关;受限于传统的FPGA资源和AD采样率,相干跳频波形研究方法是结合射频前端多频点下变频+软件无线电平台窄带同步的设计架构,文章采取射频前端全带宽采样+软件无线电平台宽带同步的设计与架构;抗干扰滤波器通常设计基于FIR的低通滤波器结构,但是相比于IIR滤波器,其资源占用高;文章提出基于IIR的低通滤波器结构和作为抗干扰滤波器,采用相位非线性补偿,确保施加不同干扰情况下相干跳频波形的抗干扰性能保持不变。In the wireless communication waveform design,the spread spectrum communication is a commonly used anti-jamming design system.Among them,the coherent frequency hopping waveform has been widely studied because of its better anti-interference performance,and the anti-interference performance of the coherent frequency hopping waveform is also positively correlated with the performance of the anti-interference filter.Limited by the traditional FPGA resources and AD sampling rate,the research method of the coherent frequency hopping waveform is combined by the design and implementation architecture of the RF front-end multi-frequency down-conversion+the software radio platform narrowband synchronization.The design and implementation architecture of broadband synchronization is adopted by the RF front-end full-bandwidth sampling+software radio platform in this paper.The anti-interference filter is usually designed based on the FIR low-pass filter structure,but compared to the IIR filter,its resource occupancy is high.This paper proposes a low-pass filter structure based on IIR and taken as an anti-jamming filter,using the phase nonlinear compensation to ensure that the anti-jamming performance of the coherent frequency hopping waveform remains unchanged under the different interference conditions.

关 键 词：相干跳频 FPGA+AD架构 抗干扰ⅡR滤波器 同步 

分 类 号：TN974[电子电信—信号与信息处理]