无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2012年
5期
24-26
,共3页
梁东坡%周安栋%屈晓旭%王永斌
樑東坡%週安棟%屈曉旭%王永斌
량동파%주안동%굴효욱%왕영빈
短波%跳时%跳频%FPGA
短波%跳時%跳頻%FPGA
단파%도시%도빈%FPGA
HF%time hopping%frequency hopping%FPGA
短波跳时跳频信号具有频率不断变化和发信时间随机的特性,能够很好地实现通信信号的隐蔽,具有较强的抗截获抗干扰能力,但是跳时技术会导致整体的发信时间被延长。为尽量缩短发信时间,对以往的同步序列＋TOD信息的同步方法进行改进,提出一种帧同步序列与跳时跳频伪随机码一一对应,采用滑动窗相关检测进行同步的方法,在FPGA中实现了该同步系统,并对该系统进行了仿真。
短波跳時跳頻信號具有頻率不斷變化和髮信時間隨機的特性,能夠很好地實現通信信號的隱蔽,具有較彊的抗截穫抗榦擾能力,但是跳時技術會導緻整體的髮信時間被延長。為儘量縮短髮信時間,對以往的同步序列＋TOD信息的同步方法進行改進,提齣一種幀同步序列與跳時跳頻偽隨機碼一一對應,採用滑動窗相關檢測進行同步的方法,在FPGA中實現瞭該同步繫統,併對該繫統進行瞭倣真。
단파도시도빈신호구유빈솔불단변화화발신시간수궤적특성,능구흔호지실현통신신호적은폐,구유교강적항절획항간우능력,단시도시기술회도치정체적발신시간피연장。위진량축단발신시간,대이왕적동보서렬＋TOD신식적동보방법진행개진,제출일충정동보서렬여도시도빈위수궤마일일대응,채용활동창상관검측진행동보적방법,재FPGA중실현료해동보계통,병대해계통진행료방진。
The HF signal that uses time hopping and frequency hopping technology is very covert,and has a strong anti-jamming and anti-intercept capability,because of its changing frequency and pseudo-random signal sending time,but the time hopping technology will lead to the extension of the total sending time.To shorten the sending time,a new synchronization method is proposed.The frame synchronization sequence corresponds to the time hopping and frequency hopping pseudo-random code one by one,and sliding window correlation detection is used for synchronization.This synchronization system is implemented with FPGA and simulation is performed.
