信号处理
信號處理
신호처리
SIGNAL PROCESSING
2015年
4期
399-406
,共8页
雷达信号提取%脉冲重复间隔样本子图周期%二维提取函数%脉冲到达时间%匹配脉冲数
雷達信號提取%脈遲重複間隔樣本子圖週期%二維提取函數%脈遲到達時間%匹配脈遲數
뢰체신호제취%맥충중복간격양본자도주기%이유제취함수%맥충도체시간%필배맥충수
radar signal extraction%pulse sequence subpattern cycle of pulse reputation interval%two-dimensional extrac-tion function%pulse time of arrival%matching pulses number
针对侦察接收机截获的交错脉冲序列中雷达信号的提取问题,在脉冲重复周期(PRI)样本子图描述技术的基础上,提出一种基于 PRI 样本子图周期搜索的脉冲提取算法。算法改传统 PRI 搜索法中的相邻脉冲间隔搜索思想为 PRI 样本子图周期搜索思想,通过构造由脉冲到达时间和准 PRI 样本子图周期构成的二维提取函数,将搜索过程中符合某一假定 PRI 样本子图周期的匹配脉冲数存储于二维提取函数中,然后根据二维提取函数的最大值确定 PRI 样本子图周期,提取对应的脉冲,实现复杂 PRI 类型的雷达信号提取。仿真结果验证了该方法的有效性。
針對偵察接收機截穫的交錯脈遲序列中雷達信號的提取問題,在脈遲重複週期(PRI)樣本子圖描述技術的基礎上,提齣一種基于 PRI 樣本子圖週期搜索的脈遲提取算法。算法改傳統 PRI 搜索法中的相鄰脈遲間隔搜索思想為 PRI 樣本子圖週期搜索思想,通過構造由脈遲到達時間和準 PRI 樣本子圖週期構成的二維提取函數,將搜索過程中符閤某一假定 PRI 樣本子圖週期的匹配脈遲數存儲于二維提取函數中,然後根據二維提取函數的最大值確定 PRI 樣本子圖週期,提取對應的脈遲,實現複雜 PRI 類型的雷達信號提取。倣真結果驗證瞭該方法的有效性。
침대정찰접수궤절획적교착맥충서렬중뢰체신호적제취문제,재맥충중복주기(PRI)양본자도묘술기술적기출상,제출일충기우 PRI 양본자도주기수색적맥충제취산법。산법개전통 PRI 수색법중적상린맥충간격수색사상위 PRI 양본자도주기수색사상,통과구조유맥충도체시간화준 PRI 양본자도주기구성적이유제취함수,장수색과정중부합모일가정 PRI 양본자도주기적필배맥충수존저우이유제취함수중,연후근거이유제취함수적최대치학정 PRI 양본자도주기,제취대응적맥충,실현복잡 PRI 류형적뢰체신호제취。방진결과험증료해방법적유효성。
alming at the problem of radar signal extraction of interleaved pulse sequences intercepted by reconnalssance receiver,according to the description technique of pulse recurrence interval(PRI),a pulse extraction algorithm is proposed based on the searching of PRI pulse sequence subpattern(PSS)cycle.In this algorithm,the idea of searching adjacent pul-ses intervals in traditional PRI searching algorithm is replaced by that of searching the PRI-PSS cycle.A two-dimensional extraction function consisting of time of arrival and paracycle of PRI PSS is constructed to store the number of matching pul-ses which conform to a certaln assumed PRI-PSS cycle during the searching process.Then the PRI-PSS cycle is determined according to the maximum value of the function,thus the equivalent pulses can be extracted,realizing the signal extraction of complex type of PRI radar signals.The validity of this method has been verified by simulation experiments.