frequency modulation的例句大全

Range Estimation of Linear Frequency Modulation Continuous Wave Radar

线性调频连续波雷达的距离估算

By comparing, we choose of Frequency modulation Continuous Wave radar as vehicle radar detects obstacles in front of the vehicle.

通过研究比较，在激光、超声波、红外线和毫米波中选择了调频毫米波雷达作为车载雷达探测前方的障碍物。

Reduction of Conducted EMI in switching power supplies using chaotic frequency modulation scheme ( CFMS) is proposed.

探讨了混沌频率调制技术在开关变换器中抑制电磁干扰的实际效果。

It includes the frequency modulation circuit for receiving signals, the demodulation circuit for detecting signals, and the FOTS ( fibre-optic transmission system) for transmiting date.

包括用于完成信号接收的选频接收电路、用于信号检测的检波电路和用于数据传输的光纤传输系统的硬件设计。

The high frequency switch technology of large power is developed successfully by the perfect control of PWM ( Pulse Width Modulation) and ZCC ( Zero Current Control), ZVC ( Zero Voltage Control) in the unit.

通过PWM（脉宽调制）和ZCC（零电流控制）、ZVC（零电压控制）的完整控制，成功开发应用了大功率高频开关技术。

The paper presents a novel ultra-audio frequency ( UAF) induction welding power based on ZCS-PWM ( Zero Current Switching-Pulse Width Modulation) technology.

介绍一种基于ZCS-PWM（零电流开关-脉宽调制）技术的新型超音频感应焊接电源。

A reduced-order model and a full-order circuit model for frequency modulation ( FM) quasi-resonant converters ( QRC) are introduced.

提出了调频准谐振变换器的降阶及全阶模型（第七章）。

The article mainly describes the development trend of broadcasting technologies in the coming 10 years, with focusing introduction to the Digital Audio Broadcasting ( DAB), Web broadcasting, synchronization frequency modulation broadcasting theories and the existing prospects.

着重论述广播技术未来十年的发展趋势，比较全面地介绍了数字音频广播（DAB）、网络广播、同步调频广播的工作原理及存在的合理性。

Based on the Fourier transform analysis of saw tooth signal frequency modulation, the concept of power spectrum spread attenuation factor in the case of barrage jamming is presented.

首先通过对锯齿波调频的傅里叶变换，提出了阻塞式干扰下功率谱扩展衰减因子概念；

Orthognal Frequency Division Multiplexing ( OFDM ) is a multi-carrier digital modulation technique for broad-band wireless communication.

正交频分复用 ( OFDM ) 是一种 多载波 数字调制技术.

OFDM is a type of modulation is called orthogonal frequency division multiplexing.

OFDM是一种新型的调制方式,称为正交频分复用.

Orthogonal frequency division multiplexing ( OFDM ) is a multi-carrier modulation method .

正交频 分多路 复用是一种 多载波调制 技术.

Sub harmonic SPWM modulation is often used for medium frequency inverters.

常用的中频逆变器通常采用传统的SPWM调制策略.

The Frequency Shift Keying modulation is widely used in HF digital communication.

移频键控是短波数字通信中常用的一种调制方式.

An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.

速调管一种用速度调节的方法放大或产生超高频率的电子管.

Abstract: The emissive frequency of the general frequency modulation broadcast transmitter is fixed.

一般的调频广播发射机，发射频率是固定的。

In modern Sonar equipment the several signal operation modes are usually required, for instance, the keying single frequency signal operation mode, the keying frequency modulation signal operation mode and etc.

在现代声纳中常要求在一部声纳中同时具有几种信号工作方式的功能，例如单频脉冲信号工作方式、键控式调频信号工作方式等等。

An adaptive orthogonal frequency division multiplexing ( OFDM) scheme is described with a simple space time coded transmit diversity for frequency selected fading channel by combining adaptive modulation with spacial diversity.

将自适应调制技术和空间分集技术有机地结合起来，提出了一种与简单空时编码发射机分集相结合的恒定比特率自适应正交频分复用（OFDM）方案。

That is mixing the baseband signal ( linear frequency modulation signal and sinusoid signal) with two orthogonal local oscillated signal generated using direct digital synthetic technology to move the baseband signal to intermediate frequency band.

同样运用直接数字合成技术产生基带信号&线性调频信号和正弦信号，与本地载波混频后，将其频谱搬移到中频，完成数字上变频。

Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Modulation Frequency Continuous Wavelet Transform

高斯线调频连续小波变换的时频能量衰减因子方法及其应用