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frequency-modulated中文是什么意思

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  • Methods of measurement on radio receivers for various classes of emission - receivers for frequency - modulated sound broadcasting emissions
    各种发射级别的无线电接收机的测量方法.调频声音广播发射接收机
  • Methods of measurement on radio receivers for various classes of emission . part 4 : receivers for frequency - modulated sound broadcasting emissions
    各种发射分级用无线电接收机的测量方法.第4部分:调频声广播发射用接收机
  • Methods of measurement on radio receivers for various classes of emission - part 4 : receivers for frequency - modulated sound broadcasting emissions
    各种发射类别的无线电接收机的测量方法.第4部分:调频声音广播接收机的射频测量
  • Methods of measurement on radio receivers for various classes of emission - part 4 : receivers for frequency - modulated sound broadcasting emissions iec 60315 - 4 : 1997 ; german version en 60315 - 4 : 1998
    各种发射类别的无线电接收机的测量方法.第4部分:调频
  • Methods of measuring and expressing the performance of radio receivers for sound broadcasting - measurement on frequency - modulated receivers of the response to impulsive interference
    无线电广播接收机性能测定及表示方法.第5部分:调频接收机脉冲干扰响应测量
  • Linear frequency - modulated ( lfm , chirp ) signal that is often applied in radar , sonar and communications system is nonstationary signal , in which the frequency varies with time
    应用于雷达、声纳和通信等信息系统中的线性调频( lfm , chirp )信号是非平稳信号,即频率成分是随时间变化的。
  • We modulate the amplitude of the continuous single tune jamming by noise and produce the continuous noise - modulated jamming . this kind of jamming is effective to pc radar including linear frequency - modulated radar and bi - phase coded radar
    在对单频正弦波进行噪声调幅后形成的噪声调幅干扰对线性调频雷达和二相编码雷达都是有效干扰,其干扰特性和射频噪声干扰类似。
  • According to the target distance ( 5 ~ 50m ) , a c - band transceiver for ranging was presented in this thesis . the focus of this work was on designing a c - band frequency - modulated continuous - wave ( fmcw ) frequency source , a receiver and microstrip antenna
    本文针对所探测目标的距离( 5 ~ 50m ) ,研制了c波段测距收发前端,主要包括c波段调频连续波( fmcw )频率源,接收电路以及微带天线。
  • By analysis , two kinds of caq are found : one is width - modulated countable pulse series , the other is frequency - modulated countable pulse series . furthermore , the method of generating caq is described and its double features is also proved
    通过分析找到两种计数型模拟量:调宽计数脉冲串和调频计数脉冲串,同时本文也阐述了计数型模拟量的产生方法,并进一步验证了它的二象性特征。
  • Continuous single tune jamming is an effective jamming to linear frequency - modulated radar . however it can not suppress signal output after being full of the sidelobe suppress filter of the jammed bi - phase coded radar , no matter how great the power of it may be
    单频正弦波干扰对线性调频雷达是一种有效干扰,但对于二相编码雷达无论具有多大的功率在充满二相编码雷达接收机的旁瓣抑制滤波器后也不能压制信号主瓣,因此是一种无效干扰。
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Last modified time:Tue, 12 Aug 2025 00:29:56 GMT

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