narrow band system中文是什么意思

• 窄带体系
• 窄带系统，窄频带制
• 窄带制

• "narrow"中文翻译    adj. 1.狭,窄,狭隘的,狭小的 (opp. bro ...
• "band"中文翻译    n. 1.队，团，群；(盗贼等的)帮，伙。 2.(吹奏) ...
• "system"中文翻译    n. 1.体系，系统；分类法；组织；设备，装置。 2.方 ...
• "narrow band communication system" 中文翻译 :    窄带通信系统
• "narrow band scatter system" 中文翻译 :    窄带散射系统
• "narrow-band communication system" 中文翻译 :    窄带通信系统; 窄带通讯系统
• "narrow-band system" 中文翻译 :    窄带制
• "narrow-band tv system" 中文翻译 :    窄频带电视系统
• "narrow band digital voice system" 中文翻译 :    窄带数字话音系统
• "narrow band secure voice system" 中文翻译 :    窄带话密系统
• "narrow-band secure eech system" 中文翻译 :    窄带话密系统
• "narrow band" 中文翻译 :    小差距汇率幅度; 窄带，窄频带; 窄频带
• "infrared narrow band filter" 中文翻译 :    红外窄带滤光片
• "isdn narrow-band" 中文翻译 :    isdn窄带
• "narrow band allocation" 中文翻译 :    窄带分配
• "narrow band amplifier" 中文翻译 :    狭频带放大器; 窄带放大器; 窄频带放大器
• "narrow band angle modulation" 中文翻译 :    窄带角调制
• "narrow band antenna" 中文翻译 :    窄频带天线
• "narrow band approximation" 中文翻译 :    窄频带逼近
• "narrow band audio unit" 中文翻译 :    窄带声频部件
• "narrow band axis" 中文翻译 :    窄带轴; 窄通带轴
• "narrow band broadcast" 中文翻译 :    窄带广播
• "narrow band cavity" 中文翻译 :    窄带空腔
• "narrow band channel" 中文翻译 :    窄带通道; 窄带信道; 窄频带信道
• "narrow band circuit" 中文翻译 :    窄带电路; 窄频带电路

• Abstract : the threshold algorithm of the target detection is often used to detect target echo signals . its performance is based on signals - noise ratio . when signals - noise ratio is great than 6 . 7 , the target can be detected . in order to increase the signals - noise ratio , matching filter is often used . if the system is narrow band system , the noise is color noise and matching filter cannot be used . therefore , the signals - noise ratio cannot be increased . however , the geometrical characteristic of the laser echo signal is different with the noise . this paper advises the algorithm that detects the target by the geometrical characteristic . when signals - noise ratio is great than 2 , this algorithm can detect target . this algorithm has been used in practice
  文摘:目标检测的阈值法经常用于检测目标的回波信号.它的性能取决于信噪比,当信噪比大于6 . 7时,能够检测出目标.为了提高信噪比,经常采用匹配滤波器.如果系统是窄带系统,噪声为色噪声,无法使用匹配滤波器,不能提高信噪比.激光回波信号的几何特征不同于噪声.提出了一种利用这种几何特征检测目标的算法.当信噪比大于2时,该算法能够检测出目标.该算法已经实际应用