This method possesses a powerful property to extract the modulated frequency of resonant frequency band overall.
该方法能将各共振响应频带的调制频率提取出来。
Objective To observe the effect of modulated frequency sinusoidal electrotherapy on experimental renal failure in rabbits.
目的探讨正弦调制电流对实验性肾功衰竭的治疗作用。
The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.
放大器输入为电压信号，与光敏二极管产生的光电流信号成比例。调制光柱以断路器同样的频率照射光敏二极管。
For wireless digital communications, digital user signal is usually at first converted into analog domain and then modulated to radio frequency by one or two steps.
对于无线数字通信而言，通常将数字用户信号首先转换到模拟域中，然后通过一个或两个步骤将其调制到无线电频率。
A modulated high-frequency signal is distorted by the thermal behaviour through complex intermodulation phenomena, although the temperature response of the circuit is slow.
虽然电路对温度响应性很低，调制的高频率信号也会由于热行为产生的复杂的互相调制现象而发生失真。
In order to obtain enough bandwidth, HF radars use an irregularly frequency modulated waveform.
为了获得足够的带宽，雷达采用一种非规则频率调制的波形。
The fault is diagnosed by extracting the fault feature component from the frequency spectrum of the modulated signal.
通过对调制信号作谱分析，以其频谱中是否存在某种故障的特征频率分量来诊断有无该种故障。
An optoelectronic detection system based on the optical feedback effect in a direct frequency modulated laser diode is developed.
设计并研制了一套基于光反馈效应的直接频率调制激光二极管光电探测系统。
The real arbitrary waveform generator that can generate single acoustic frequency signal modulated by Manning window and Gaussian window is developed.
成功地实现了汉宁窗、高斯窗调制的任意频率单音频信号的产生，达到了任意波形发生器的功能。
Then the primitive color holograms are modulated in the frequency domain to reconstruct object by original reference waves.
第二步是分别对分色全息图在频域进行调制以实现用原参考光真实再现原始物光波。
This paper discusses the theory analysis and circuit design of high-frequency high power source which is modulated by narrow pulse.
本文对窄脉冲调制的高频大功率源进行理论分析和电路设计。
The paper presents a new radar system based on frequency Modulated Interrupting Continuous Wave (FMICW) by exploiting the hopping frequency technique to improve the capability of HFGWR.
为提高高频地波雷达的抗干扰能力，提出了一种在线性调频中断连续波的基础上基于跳频技术的新高频地波雷达体制。
The HRV and RDV spectral analysis showed that HF peak was modulated by the frequency of controlled respiration.
发现大白鼠的HRV和RDV的谱分析的峰值频率都受到吸呼频率的调制。
To estimate carrier frequency of digitally modulated signal whose modulation type is unknown, a carrier frequency estimation method for digitally modulated signal is proposed.
针对未知调制类型情况下数字调制信号的载波频率估计问题，提出了一种适用于数字调制信号的载波频率估计方法。
Frequency of modulated signals is extracted from frequency-modulated signals by using the relationship between the modulus of wavelet transform coefficient and the singular exponent.
利用小波变换系数的模值与信号奇异性指数之间的关系，从调频信号中提取出调制信号的频率。
Modulated stepped frequency radar is a system to get high resolution range profile with the problem of redundancy.
调频步进雷达是一种距离高分辨率的雷达体制，但是会产生目标冗余的问题。
The combination of frequency modulated continuous wave(FMCW)technology and synthetic aperture radar(SAR)techniques is often used to obtain ultra-high resolution.
运动补偿问题是制约机载调频连续波合成孔径雷达（FMCWSAR）实现超高分辨率成像的瓶颈。
ConclusionThe modulated medium frequency low frequency current hydroelectric bath therapy is a simple, safe and better effect method for sequela of ankle fracture.
结论低频调制的中频电水浴疗法是治疗踝部骨折后遗症的一种简单、安全、疗效好的方法。
Objective : This experiment is to discover the effective mechanism of modulated medium - frequency impulsed electrotherapy on peripheral nerve diseases .
揭示临床应用调制中频脉冲电治疗周围神经疾病的作用机制。
Linear frequency-modulated continuous wave synthetic aperture radar (LFM CW SAR) imaging algorithm is studied.
研究了线性调频连续波sar的距离徙动算法成像。
ObjectiveTo compare the effects of modulated medium frequency low frequency current hydroelectric bath therapy and electromagnetic therapy on heel pain.
目的比较低频调制的中频电水浴疗法与电磁疗法治疗[足]跟痛的疗效。
Frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR) is a light-weight, cost-effective, high-resolution imaging radar, which is suitable for operation on a small flight platform.
调频连续波合成孔径雷达(SAR)是一种新体制的高分辨率成像雷达，具有体积小，重量轻，耗电少，造价低，分辨率高等优点，非常适合小型化sar的应用。
In this paper, direct platemaking technology is briefed, frequency modulated half tone dot technology (principles, characters and technologics) is emphasized.
本文简述了直接制版技术，着重叙述了调频网点技术，包括原理、特点及技术。
There is a growing interest in the frequency modulated continuous wave (FM-CW) SAR for its advantages such as small cubage, light weight, cost-effective and high resolution.
调频连续波(FM -CW)合成孔径雷达因其体积小、重量轻、成本低及分辨率高等特点越来越受到关注。
Conclusion It is indicated that the modulated medium frequency sinusoidal electrotherapy has treatment and prevention for the renal failure.
结论正弦调制中频电流对实验性肾衰有治疗和预防作用。
This paper introduces how DDS techniques can be extended to produce frequency modulated(FM)waveforms as well as many types of digitally modulated waveforms.
介绍了如何利用DDS技术来产生调频波形及其他的数字调制波形；
In linear frequency modulated continuous wave (LFM-CW) radar the range resolution is determined by signal bandwidth and linearity.
在线性调频连续波雷达中，距离分辨力由线性调频信号的带宽和线性度等决定。
The interference effects of single frequency, digitally modulated signal and radar signal to FM TV systems are studied by means of the subjective and objective measurements.
通过主观测量和客观测量研究了单频、数字调制信号和雷达信号对调频电视系统的干扰效应。
The interference effects of single frequency, digitally modulated signal and radar signal to FM TV systems are studied by means of the subjective and objective measurements.
通过主观测量和客观测量研究了单频、数字调制信号和雷达信号对调频电视系统的干扰效应。
应用推荐