舰船电子对抗
艦船電子對抗
함선전자대항
JIANGCHUAN DIANZI DUIKANG
2011年
6期
63-67
,共5页
数字信道化%瞬时测频%信道检测与判决%信号重建
數字信道化%瞬時測頻%信道檢測與判決%信號重建
수자신도화%순시측빈%신도검측여판결%신호중건
digital channelization%instantaneous frequency measurement%channel detection and judgment%signal reconstruction
针对宽带雷达信号信道化接收的失真问题,提出了一种信号重建方案。利用瞬时测频技术改进了跨信道信号的检测方法,根据子信道信号的瞬时频率分布来决定是否需要信号重建,分析了信道化与重建系统原型滤波器需要满足的条件,建立了系统的高效模型。仿真结果表明该系统能够准确恢复原信号的特征。
針對寬帶雷達信號信道化接收的失真問題,提齣瞭一種信號重建方案。利用瞬時測頻技術改進瞭跨信道信號的檢測方法,根據子信道信號的瞬時頻率分佈來決定是否需要信號重建,分析瞭信道化與重建繫統原型濾波器需要滿足的條件,建立瞭繫統的高效模型。倣真結果錶明該繫統能夠準確恢複原信號的特徵。
침대관대뢰체신호신도화접수적실진문제,제출료일충신호중건방안。이용순시측빈기술개진료과신도신호적검측방법,근거자신도신호적순시빈솔분포래결정시부수요신호중건,분석료신도화여중건계통원형려파기수요만족적조건,건립료계통적고효모형。방진결과표명해계통능구준학회복원신호적특정。
Aiming at the distortion of wideband radar signal channelization reception,a signal reconstruction program is proposed.This paper improves the method of detecting across-channel signal by using the instantaneous frequency measurement technique,and determines weather the signal should be restored or not according to the instantaneous frequency distribution of sub-channel signals,analyzes the conditions for satisfying the channelization and reconstructing the system prototype filter,establishes the system model with high efficient.The simulation results indicate that the system can accurately restore the characteristics of original signal.
