基于光电混合的超宽带一体化接收处理技术  

Ultra-wideband Receiving and Processing Technology Based on Microwave Photonic Channelization

作　　者：陈显舟[1] 蒋炜[1] 方海[1] 杨旭[1] 梁栋[1] CHEN Xianzhou;JIANG Wei;FANG Hai;YANG Xu;LIANG Dong(China Academy of Space Technology(Xi′an),Xi′an 710100,China)

机构地区：[1]中国空间技术研究院西安分院,西安710100

出　　处：《现代雷达》2022年第4期16-22,共7页Modern Radar

基　　金：国家重点研发计划资助项目(2020YFB1808003);基础加强计划重点基础研究项目(2020-JCJQ-XXX-126-12);国防科技创新特区项目(19-H863-03-XXX-XXX-004-02)。

摘　　要：面向超宽带、高灵敏度、复杂电磁环境下的多信号接收处理需求,提出了基于光电混合的超宽带一体化接收处理方案。与传统的微波接收方法相比,采用微波光子信道化统一中频变频接收通道,发挥光子技术在并行、复用、小型化集成等方面的优势,在光域上完成对超宽带微波信号信道化滤波和下变频处理,节省了众多微波器件和电缆,减轻了系统重量、体积和功耗,增加了信号截获概率,实现在大带宽内同时处理多个窄带和宽带信号的能力,增强了系统可靠性,提升了系统效率。采用数据缓存加多级数字信道化处理方案,缓解高速采集数据与实际信号处理芯片在数据吞吐量、运行速度等的不匹配,能够满足大小带宽信号的输入,克服了单级信道化同时处理宽窄信号的性能不足。该文提出的方案,尤其适用于侦干探通多功能一体化载荷和6G卫星通信系统对于超宽带电磁信号的统一接收处理。Facing the needs of multi-signal receiving and processing under ultra-wideband,high sensitivity and complex electromagnetic environment,the paper proposes an integrated ultra-wideband receiving and processing technology based on microwave photonic channelization.Compared with traditional microwave receiving methods,the microwave photonic channelization unified IF frequency conversion receiving channel,taking advantage of photonic technology in parallel,multiplexing,and high integration,it completes the channelization down-conversion processing of ultra-wideband microwave signals in the optical domain.It saves many microwave components and cables,reduces system weight,volume and power consumption,increases the probability of signal interception,and realizes the ability to process multiple narrowband and wideband signals simultaneously in a large bandwidth.Therefore,it can enhance the system reliability and improves the system efficiency.Adopting data buffering and multi-level digital channelization processing method,which can alleviate the mismatch in terms of data throughput and processing ability,adapt to the input of signals of different bandwidths,and improve single-level channelization while processing narrowband signal and broadband signal performance limitations.The proposed method is especially suitable for the unified reception and processing of ultra-wideband electromagnetic signals by the multifunctional integrated payloads and 6 G satellite communication systems.

关 键 词：多功能一体化 超宽带接收处理 微波光子信道化 多级数字信道化 

分 类 号：TN29[电子电信—物理电子学] TN957.5