Frequency modulation is not possible with polychromatic light.

多色光不可能调制频率。

Therefore, the tuner is essential to the frequency modulation radio.

所以调频收音机中的频率调谐器是至关重要的。

A pulse frequency modulation (PFM) with discrete frequency is designed.

设计了一种离散频率的PF M控制方式。

The application of the variode in frequency modulation circuit are discussed.

讨论变容二极管在调频电路中的应用。

This thesis studies and designs a wireless interphone of frequency modulation.

本论文研究设计了一款调频无线对讲机。

Based on modulation domain analysis, a frequency modulation parameter testing method is proposed.

基于调制域分析，设计了电子产品频率调制参数测试方法。

A brief description on the application of the encode in Frequency Modulation Systems (FMS) is given.

简要地说明了磁编码器在FMS(频率调制系统)中的应用。

The performance for the frequency modulation of electrical feedback optical transmitters is presented.

本文研究了电反馈光发射机的频率调制特性。

The fundamental principle of sub-carrier frequency modulation used for FBG array interrogation is analyzed.

分析了副载波调频技术用于光纤光栅阵列查询的基本原理。

One application of CPLD in the measuring system of using frequency modulation displacement sensor is introduced.

介绍了CPLD在调频式位移传感器测量系统中的一种应用。

Through proper adjustment to frequency modulation amplitude, the Kerr-effect-induced bias can be effectively reduced.

通过适当调节两光束的频率调制幅度，可有效地实现克尔效应误差的消除。

Broadband noise frequency modulation signal with high precision is commonly used in modern electronic interference system.

宽带高精度的噪声调频信号在现代电子干扰系统中应用广泛。

This thesis introduces a series of low cost high precision Linear Frequency Modulation Continuous Wave (LFMCW) ranging radar.

本文介绍一种低成本、高精度线性调频连续波(LFMCW)测距雷达。

The high frequency modulation characteristics of GaAs-GaAlAs DH LBDs are analyzed and the results (data and curves) presented.

分析了器件的两种高频调制特性，给出了测量结果——数据和曲线。

This paper analyses the frequency characteristics of the gear meshing and the signals due to amplitude and frequency modulation.

本文分析了齿轮传动的频率特性和它所产生的频率和幅值调制信号。

In order to resolve source shortage of television tower, adopting frequency modulation and television multi-channel with total tower.

为了解决发射塔资源短缺问题，可采用调频和电视多频道共塔技术。

Taking the Narrow Band Frequency Modulation(NBFM)as an example, the process of communication question solution by EDA technology is given.

以非线性模拟调制中常见窄带调频为例，完整展现了借助EDA技术分析解决通信问题的过程。

LFM (Linear Frequency Modulation) pulse is a kind of important large time-bandwidth product signal and commonly used in modern radar system.

线性调频脉冲是现代雷达系统中常用的一种重要的大时宽-带宽积信号。

The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.

采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。

The influence of Kerr effect to close-loop digital resonator fiber optic gyroscope based on square-wave frequency modulation was analyzed in theory.

对采用方波频率调制数字闭环谐振型光纤陀螺中克尔效应的影响进行了深入的理论分析。

A heterodyne interference is caused by a frequency modulation of a laser diode (LD) with a ramp injection current, and a linear phase detection is realized.

传感器利用注入结电流直接调频的半导体激光(LD)产生外差干涉，从而实现了干涉相位的线性检测。

Two kinds of typical wideband signal, Frequency Modulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with wideband Ambiguity Function.

以宽带模糊度函数为工具定性地分析了两类典型宽带信号，即调频信号和频率分集信号。

The7years 'applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances.

7年的使用实践表明，直流脉动电压频率调制技术对抑制声谐振现象十分有效。

AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.

调幅广播可以发送更远的距离，但它的声音质量却不及后来一种被称为频率调制的无线电信号处理方式优越。

Ionospheric frequency modulation causes spreading of the surface clutter in Doppler domain which greatly limits the detection performance of HF sky-wave radars.

电离层频率调制导致地表面杂波的多谱勒展宽，极大地限制了高频天波雷达的目标探测性能。

Statistics histogram data processing scheme is designed. Standard deviation of frequency modulation is found out according to normal distribution characteristics.

设计了统计直方图数据处理方案，按照正态分布的特性找出了寄生频率调制的标准偏差。

Under the same amplitude modulation index and same frequency modulation index, different SVM waveforms can be derived from different sampling point distributions.

相同频率调制比和幅度调制比的情况下，对调制波信号的不同采样点分布可以得到不同的SVM波形。