1) Shift-Frequency Jamming
移频干扰
1.
Randomly-Shift-Frequency Jamming style to SAR;
对合成孔径雷达的随机移频干扰
2.
Method of shift-frequency jamming to LFM radar based on delay invariance
基于延迟不变的LFM雷达移频干扰方法
3.
Study of shift-frequency jamming way for moving target detection adopting ATI
移频干扰在动目标检测中的效果分析
2) Frequency-shifting jamming
移频干扰
1.
The view that frequency-shifting jamming couldn\'t be used as a deceptive jamming technique is argued.
分析了移频干扰对线性调频脉冲压缩雷达的干扰效果,提出移频干扰不能作为假目标欺骗干扰应用的观点,其产生的假目标由于不满足目标运动特性,易被雷达识别。
3) frequency shift jamming
移频干扰
1.
Based on the analysis on the characteristics of time domain and frequency domain of the LFM signal,this paper studies the jamming effects of radio-frequency noise jamming,convolution modulation jamming,frequency shift jamming and time delay jamming,summarizes the best jamming patterns through the simulation and comparison among several jamming patterns.
在分析了线性调频信号的时域、频域特性的基础上,研究了射频噪声干扰、卷积调制干扰、移频干扰和延时干扰的干扰效果,通过仿真及各干扰样式之间的比较,总结出了最佳干扰样式。
2.
The frequency shift jamming based on digital radio frequency memory(DRFM) is a kind of new jamming technology aiming at some new system radars(such as the linear frequency modulation(LFM) pulse-compression radar).
数字射频存储器(DRFM)移频干扰是针对LFM脉冲压缩雷达等一些新体制雷达所提出的新型干扰技术,由于干扰信号与雷达发射信号具备较强的相干性,干扰样式的多样性及灵活性,从而导致雷达难以利用现有的抗干扰技术。
4) Chaotic shift-frequency jamming
混沌移频干扰
5) high frequency interference
高频干扰
1.
Elimination of high frequency interference during the laser-arc hybrid welding;
激光-电弧复合焊接过程中高频干扰的消除
2.
Anaysis of high frequency interference in arc welding inverter and control measures;
逆变焊机的高频干扰分析及抑制方法探讨
3.
This paper enters into some technical problems about anti disturbance wire arrangement in computer controlled AC automatic TIG welding system in high frequency interference environment.
研讨了高频干扰下计算机控制交流TIG焊布线系统抗干扰问题 ,包括干扰类型分析及防止措施、高频干扰产生原因和计算机接口电路隔离措施[1～ 3] 。
6) high-frequency interference
高频干扰
1.
The paper investigates the factors affecting high-frequency interference,of which include the high-frequency interference,the length of welding cable and power line,the output resistance of signal source,the type,length and orientation of signal line,the shielding and grounding of high-frequency oscillator,power line and signal line.
本文以试验为主，研究了影响高频干扰的多种因素，如高频强度，焊接电缆和焊机输入线长度，信号源输出电阻，信号线的种类，长度和空间位置，高频振荡器、焊机输入线和信号线的屏蔽接地等。
2.
In view of the poor high-frequency interference rejection of the original second-order lead correction control strategy,an improved strategy is proposed,which reduces amplitude gain at high frequency without changing phase-frequency characteristic and smooth the phase-frequency characteristic in a broader rage.
针对原二阶超前校正环节控制策略抵抗高频干扰能力差的问题,提出了一种改进型的二阶超前校正环节的新型控制策略,在不改变相频特性的前提下,降低高频时的幅值增益,使幅频特性在较宽的范围内比较平滑。
补充资料：多普勒频移
多普勒频移
物理学术语。又称“多普勒频率”。由多普勒效应引起发射频率与运动目标反射波或散射波信号频率之间的频差。反射体引起的多普勒频移(fd)与发射频率(fs)的关系式为fd=(2Vcosθ)·fs，C为声速，V为反射体的运动速度，θ为反射体运动方向与声束指向之间的夹角。取超声诊断中的典型数据可算得血流。胎心检测中的多普勒频移(fd)均在声频范围之内，因此这类诊断仪器均可采用扬声器来监听。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条