电子测试
電子測試
전자측시
ELECTRONIC TEST
2012年
2期
78-82
,共5页
宽带阵列%滤波器%加窗%信道化接收机
寬帶陣列%濾波器%加窗%信道化接收機
관대진렬%려파기%가창%신도화접수궤
broadband array%wave-filter%weighting%channelized-receiver
数字化宽带接收机提高了接收信号的频域覆盖带宽,但往往灵敏度降低而难以检测弱小信号。既追求足够宽的频谱带宽,又提高强杂波背景中弱小目标检测能力,是本文研究的出发点。本文基于宽带相控阵接收机的工程实践,讨论了基于频域抽取的信道化接收机设计原理,设计了一个400M瞬时带宽阵列接收机的工程样机,并成功应用于某多波束阵列接收系统。实验结果表明,该信道化宽带接收机实现了超远程对雷达脉冲信号的检测,具有一定的工程借鉴价值和理论指导意义。
數字化寬帶接收機提高瞭接收信號的頻域覆蓋帶寬,但往往靈敏度降低而難以檢測弱小信號。既追求足夠寬的頻譜帶寬,又提高彊雜波揹景中弱小目標檢測能力,是本文研究的齣髮點。本文基于寬帶相控陣接收機的工程實踐,討論瞭基于頻域抽取的信道化接收機設計原理,設計瞭一箇400M瞬時帶寬陣列接收機的工程樣機,併成功應用于某多波束陣列接收繫統。實驗結果錶明,該信道化寬帶接收機實現瞭超遠程對雷達脈遲信號的檢測,具有一定的工程藉鑒價值和理論指導意義。
수자화관대접수궤제고료접수신호적빈역복개대관,단왕왕령민도강저이난이검측약소신호。기추구족구관적빈보대관,우제고강잡파배경중약소목표검측능력,시본문연구적출발점。본문기우관대상공진접수궤적공정실천,토론료기우빈역추취적신도화접수궤설계원리,설계료일개400M순시대관진렬접수궤적공정양궤,병성공응용우모다파속진렬접수계통。실험결과표명,해신도화관대접수궤실현료초원정대뢰체맥충신호적검측,구유일정적공정차감개치화이론지도의의。
Digital wideband receiver improves the receiving signal frequency coverage bandwidth,but often reduced sensitivity to detecting weak signal.The pursuit of a wide spectral bandwidth and improving the detection ability of dim and small target on strong clutter background is the starting point of this paper.Based on engineering practice of Wideband phased array receiver,this article discussed the design principle of channelized receiver which based on frequency domain sampling,and an engineering prototype of 400 MHz bandwidth instantaneous array receiver is designed and successfully applied in a multi-beam array receiving system.The experimental results show that,the channelized broadband receiver can detect the radar pulse signal of ultra-far distance;the project has a certain reference value and theoretical significance of righteousness.
