Chirping amplitude and phase changes with the modulation frequency are present.
得出了啁啾幅度和啁啾相位与调制频率的关系。
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulation frequency.
伪码调相-载波调频复合信号的识别特征包括伪码特征和频率调制特征。
Due to the lasing effect, the peak modulation frequency of extinction ratio and chirp occur at the relaxation oscillation frequency.
受激射效应影响，消光比及频率啁啾在弛豫振荡频率处达到极大值。
The support vector clustering(SVC)algorithm was introduced to detect linear modulation frequency(LFM) signal and estimate its parameter.
文中引入支持向量聚类（SVC）算法对多分量LFM信号进行检测和参数估计。
It is convenient to change the optical intensity of the sidebands by tuning the DC bias voltage while the microwave modulation frequency and power are fixed.
当微波调制频率及功率一定时，可方便地调节直流偏置电压来改变各阶光波的强度。
Chaotic signals at different wavelengths can be generated by adjusting the pump power, modulation frequency and tunable filter, and chaos synchronization is achieved.
通过调节泵浦功率、调制频率和可调谐滤波器，可以产生不同波长的混沌信号，并实现混沌的同步。
Quantum well laser diodes are of high modulation frequency response. They can be used as light sources and be directly modulated for high bit rate optical communications.
量子阱激光器具有良好的小信号调制频率响应，能作为高速光通信光源采用直接调制方式进行信号传输。
Infrared thermal sensors are used in a wide variety of application which require room temperature operation and uniform sensitivity over a wide modulation frequency range.
热型红外传感器应用广泛，它要求在室温条件下工作，在宽的调制频率范围内具有均匀的灵敏度。
Finally, a solution to restraining the harmonic current and ripple torque is suggested, ie a larger modulation frequency ratio of 3k is to be adopted, as it is used in SPWM.
文中还提出了抑制谐波电流和脉动转矩的方法，如在SPWM生成中，采用较大的3的整数倍调制比。
Experimental data show that the intensity modulation depth increases with the bias current of LD. When the modulation frequency increases, the intensity modulation depth decreases.
实验数据表明，光强调制度随激光器偏置电流的增加而加深，随调制频率的升高而减小。
The experiment shows that the bandwidth of the time delay as a function of the modulation frequency changes in the absorption and gain regimes due to the carrier-lifetime variation.
实验结果表明，由于载体寿命的变化，在吸收和增益区域，带宽的时滞随着调制频率的变化而变化。
It is made clear through the theoretical analysis that the frequency shift is dependent on the modulation frequency, thermal time constant, bias current of the laser diode and so on.
理论分析表明频移幅度与调制频率、时间常数和半导体激光器的偏置电流等物理量有关。
The laser beam modulation frequency has been increased to achieve better accuracy. The circuit has been designed in a simple manner to reduce unexpected error and debugging complexity.
采用同相放大电路成功实现了对微弱调制光电信号的接收，并采取简单但行之有效的方法滤除了偏置电压引入的噪声干扰；
This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation, at the same time the results are given.
本文对双极性调制的无刷直流电动机仿真分析了转速和调制频率对转矩影响同时给出仿真结果。
The experimental data of copper was obtained about the phase lag dependence of modulation frequency at normal temperature, and the thermal diffusivity of copper was acquired by using the linear fit.
实验得到了铜在常温下的调制频率与相位差间的实验数据，通过对实验数据的线性拟合得到了铜的热扩散系数，以及铜-不锈钢在300 K和20 K低温下的接触界面层热阻。
The system can be used to measure the voltage responsivity and detectivity of infrared detector at different modulation frequency with rapid speed and high accuracy, it meets the need of measurement.
该系统可以自动测试不同调制频率下红外探测器的电压响应率和探测率，能够快速准确地完成测试任务，满足了测试要求。
The influence of bias current and modulation frequency on chaos dynamics of vertical-cavity surface-emitting laser (VCSEL) subject to direct current modulation is investigated by numerical simulation.
利用数值模拟的方法研究了电流调制下偏置电流和调制频率对垂直腔面发射半导体激光器(VCSEL)混沌动力学特性的影响。
"Modulation domain" is a plane domain which is consisted of frequency and time signal axes.
“调制域”是由信号的频率和时间两个轴构成的平面域。
They do not occur in a decided frequency, but rather through a special modulation, the radio waves identity.
他们通常不发生在确定的频率，而是通过一个特定的调治，来确定无线电波。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
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。
A new frequency estimation technique for BPSK modulation signals embedded in strong noise is proposed.
在强噪声背景下，针对BPSK调制信号，提出了一种新的频率估计技术。
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。
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。
Frequency modulation is not possible with polychromatic light.
多色光不可能调制频率。
In wireless technology, collision occurs when two transmitters transmit at the same time with the same modulation scheme on the same frequency.
在无线技术中，冲突发生在两个发射器在相同的时间、相同的频率发送相同的调制方式。
High frequency pulse width modulation power control systems can be realized using semiconductor switches.
高频脉冲宽度调制电力控制系统，可以实现用半导体开关。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
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