查询词典 frequency modulation

You can also achieve the suppression matlab simulation carrier single sideband amplitude modulation, including the output of each node signal frequency spectrum.

详细说明：你也matlab实现抑制载波单边带调幅的仿真，包括输出各个节点的信号频谱图。

This investigation presents a novel modulation approach for generating optical vector signals using frequency multiplication based on double sideband with carrier suppression.

本篇论文提出一种新型的光调变技术，此种调变技术可以传输向量讯号并具有倍频效果。

When communication by pulses was introduced, the amplitude, frequency and pulse width become possible modulation options.

当脉冲的沟通被介绍的时候，广阔，频率和脉冲宽度变成可能的调音选项。

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。

The use of the current world's most advanced IGBT and high frequency sine wave pulse width modulation, dual-inverter technology.

采用了目前国际上最先进的IGBT及高频正弦波脉宽调制、双逆变技术。

A symbol synchronization method for digital communication is proposed, and it is a indirectly inserted pilot frequency based on pulse width modulation.

提出了一种用于数字通信的位同步方法，它是基于脉宽调制技术的间接插入导频法。

A comprehensive theory is presented for FM spectroscopy of Doppler-broadenedMolecular iodine absorption lines. The relationship betWCen FM spectrOscopy andmodulation frequency and modulation index has been stUdied. The whole circuit forthc frcquency stabilized laser system has been developed.

建立了多普勒加宽碘分子线性吸收FM光谱的一般理论，对FM光谱与调制频率和调制度的关系进行了研究；并研制了532nm Nd：YVO_4/KTP碘吸收稳频激光器的电路系统；提出了虚拟激光稳频技术的概念。

At a low temporal frequency 5Hz,peak responses occured in response to the maximum(in on-center cells or minimum (in off-center cells) luminances of light modulation with an identical delay.

在低的刺激频率(5Hz)下，给光中心和撤光中心细胞的反应峰值延迟时间(相对于光调制信号的最大和最小值)也相同，表明它们具有相同的反应潜伏期。

This control system also may according to need to increase the frequency conversion velocity modulation, to boils the cocoon machine rotation time to carry on the accuracy control, the control connection may with automatically match delivers the cocoon system joint, the realization entire boils the cocoon - silk reeling automatically to match delivers the cocoon the linkage.

该控制系统还可以根据需要增加变频调速，对煮茧机回转时间进行精确控制，控制接口可与自动配送茧系统联接，实现煮茧-缫丝全自动配送茧的联动。

The research of VCO attracts extensive attention of scientists all over the world, especially scientists working in the field of military science and technology. Types of improved VCO have appeared in the last two decades, such as, reflex triodes, reditrons, vircator with e-beam modulation, resonant cavity frequency locking vircators, multi-vircator phase locking devices, etc.

在过去二十多年中，出现了多种改进性能的虚阴极振荡器，如：反射三极管、Reditron、、谐振腔锁频虚阴极振荡器、多个虚阴极振荡器相位锁定装置、双间隙虚阴极振荡器、各种反馈式虚阴极振荡器等等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。