一種高速跳頻信號的數(shù)字信道化寬帶接收設計
2021年電子技術應用第12期
王 杰
中國西南電子技術研究所,,四川 成都610036
摘要: 跳頻通信作為一種新型的通信體制,,具有很強的抗截獲,、抗搜索、抗干擾,、抗對抗等特點,。美國及北約國家裝備的戰(zhàn)術信息分發(fā)系統(tǒng)以及地面、艦載,、機載跳頻電臺和敵我識別系統(tǒng)等,,均采用了跳頻通信體制,具有高度的保密性和抗干擾性能,。針對高速跳頻信號頻帶寬,、頻點多且跳頻速度快不利于快速檢測的特點,,提出了利用兩片ADRV9009射頻捷變芯片將高速跳頻信號變換成零中頻信號后,送FPGA經(jīng)多相濾波數(shù)字信道化后完成多路通道信號接收處理的方案,。該設計不僅簡化了整個高速跳頻信號前端寬帶接收處理的流程,,減小了前端模擬信道接收設備的體積,降低了系統(tǒng)的功耗,,同時基于FPGA實現(xiàn)多相濾波的數(shù)字信道化設計大大增加了系統(tǒng)的靈活性,,提高了后端高速跳頻信號的檢測和識別概率。
中圖分類號: TN393
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.212183
中文引用格式: 王杰. 一種高速跳頻信號的數(shù)字信道化寬帶接收設計[J].電子技術應用,,2021,,47(12):26-30,
英文引用格式: Wang Jie. Design of digital channelized broadband receiver for high speed frequency hopping signal[J]. Application of Electronic Technique,2021,,47(12):26-30,
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.212183
中文引用格式: 王杰. 一種高速跳頻信號的數(shù)字信道化寬帶接收設計[J].電子技術應用,,2021,,47(12):26-30,
英文引用格式: Wang Jie. Design of digital channelized broadband receiver for high speed frequency hopping signal[J]. Application of Electronic Technique,2021,,47(12):26-30,
Design of digital channelized broadband receiver for high speed frequency hopping signal
Wang Jie
Southwest China Institute of Electronic Tecnology,,Chengdu 610036,China
Abstract: As a new type of communication system,,F(xiàn)H communication has strong characteristics of anti-interception,anti-search,ant-interference and anti-antagonism. FH communication system is adopted in the tactical information distribution system,ground and shipborne and airborne FH radio stations and identification friend or Foe systems of the United states and NATO countries,which has high confidentiality and anti-interference performance.In view of the characteristics of high speed FH signal with wide frequency band,many frequency points and fast frequency hopping speed,this paper proposes to use two pieces of ADRV9009 RF agility chip to transform the high speed FH signal into zero IF signal,and then send it to PFGA through polyphase filtering digital channelization to complete the signal receiving and processing.The design not only simplifies the whole signal front-end wideband reception process,reduces the volume of the front-end analog channel receiving equipment,and reduces the power consumption of the system,but also greatly increases the flexibility of the syetem,and improves the detection and identification probability of high-speed frequency hopping signal in the end.
Key words : high speed FH signal,;wideband digital receiver;ADRV9009l,;poly-phase filtering process
0 引言
通信偵察的主要任務是利用電子情報偵察手段對敵方發(fā)射的輻射源信號進行搜索與截獲,、分選與識別、調(diào)制參數(shù)測量和解調(diào)譯碼等,。當前美國及北約國家的數(shù)據(jù)鏈均采用了高速跳頻和直接序列擴頻體制[1],,其具有跳頻速度快、頻點多,、帶寬寬,、擴頻碼復雜等特點,信號的捕獲,、跟蹤和檢測極為困難[2],。
針對信號的捕獲跟蹤,傳統(tǒng)的偵察方式為將接收的射頻信號通過模擬下變頻變換到中頻信號,,經(jīng)過AD數(shù)字采樣后送數(shù)字信號處理模塊完成信號的頻譜計算和功率估算等,,從而完成信號的檢測和分選識別。該方法針對帶寬小,、跳速慢,、頻點少的信號效果較好,但針對跳頻帶寬,、頻點多的信號則處理能力不足,,F(xiàn)PGA的資源無法滿足多路信號同時下變頻、濾波和頻譜并行計算處理,。此外,,當前裝備發(fā)展的趨勢是低功耗,、小型化方向發(fā)展,傳統(tǒng)模擬下變頻方式已經(jīng)很難滿足這方面的需求,。
本文詳細內(nèi)容請下載:http://forexkbc.com/resource/share/2000003865,。
作者信息:
王 杰
(中國西南電子技術研究所,四川 成都610036)
此內(nèi)容為AET網(wǎng)站原創(chuàng),,未經(jīng)授權禁止轉載,。