The frequency dependent parameters of the interconnection lines are extracted by the full wave method firstly.
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2. 海洋水声信道是一种极其复杂多变的时-空-频变参信道。
Ocean channel is such a complex environment that it varies in space, time and frequency.
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3. 采用变截面铁心结构，可提高三倍频变压器的效率和热稳定性。
When the core of the frequency tripling transformer is variable section, its efficiency and thermal stability increase.
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4. 采用二维电感模型，计算了带接地导体的有耗互连线的频变阻抗。
Two-dimensional inductance model is applied to calculate the frequency-dependent impedance of lossy interconnect lines with ground conductor.
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5. 电阻和电感参数均有相应的频变特性，即在特定频段内呈线性变化。
The resistance and inductance manifest the frequency-dependent characters linearly varying within some frequency bands.
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6. 本文使用导体截面矩量法提取芯片内互连线电阻和电感频变分布参数。
Conductor cross-section method of moment is applied in extracting resistance and inductance frequency-dependent distributed parameter of IC interconnects.
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7. 结合所提出的两种方法，对带噪声的频变微弱振动信号进行了检测分析。
Combining two methods, it is detected and analyzed that the weak signal slowly frequency change accompanied by noise.
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8. 但是液压悬置的动态特性非常复杂，既具有频变特性，又具有非线性特性。
But the hydraulic mount has a complicated dynamic characteristic with frequency dependence and non-linearity.
Based on the frequency parameters, a new transformation method to determine the response to lightning impulse wave on transmission line with corona is proposed in this paper.
A novel realization of floating FDNR proposed in the paper has advantages such as fewer passive and active elements, lower sensitivity, good stability, no need of adjustment, easy realization.
Conductor cross section method of moment was applied in extracting the resistance and inductance frequency dependent distribution parameter of multiple conductor transmission lines of IC.
As a new technique of signal processing, wavelet analysis has excellent characteristics of time frequency localization and is suitable for analyzing time varying or transient signals.
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13. 因此采用能反映时频非平稳特性的时变谱密度(即局部谱密度)来描述地震地面运动是非常必要的。
Consequently, it is necessary to describe earthquake ground motion with local spectral density, which is time-dependent and can reflect the non-stationary characteristics.
The methods of time frequency analysis include linear, quadratic and adaptive methods. They provide effective tools for analyzing signal time varying spectrum in time frequency plane.
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15. 无线环境中存在多径衰落、多谱勒频移和信道快速时变等许多不利因素。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
A new kind of moire fringe projector controlled by computer is used for changing the spacial frequency to adapt the contour of the object to be measured.
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17. 根据跳频信号瞬时带宽，将潜在跳频频率点邻域时频图投影到时域，分选潜在频率跳变点集合。
The potential temporal hopping point set is fetched from the temporal projection variance of the adjacent domain time-frequency image according to the instantaneous signal bandwidth.
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18. 介绍了振动台固频调谐的弹性支承变刚度装置结构设计及传动计算。
The design and transmission calculate of the elastic support variable stiffness apparatus for frequency modulation tune for the structure of the vibration stage is introduce.
Wavelet analysis, as a new technique of signal processing, possesses excellent characteristic of time-frequency localization and is suitable for analysing the time-varying or transient signals.
MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.
The main contents are as follows:1. As a powerful tool to analyze the non-stationary signals, the time-frequency analysis shows us clearly frequency varies with time.
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25. 风力发电系统为了更充分更有效的利用风能，越来越多的采用变桨控制系统和变速恒频控制系统。
To improve the efficiency of wind power utilization, we employ more and more variable-pitch controllers and variable-speed constant-frequency (VSCF) controllers in wind-power generating systems.
This product USES the variable volume control technology, which can adjust according to indoor load demand active output, often regulation frequency energy efficiency than the ascension above 25%;
Then the piecewise PID pitch-controlled algorithm and the control strategy for transition between variable speed constant frequency (VSCF) and pitch control were used in the test-bed.
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28. 时频分析作为分析时变非平稳信号的有力工具，成为现代信号处理研究的一个热点。
Now, Time-Frequency Analysis is one of the top interests in Signal Processing, and more and more research has been put on this topic.
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29. 时频分析作为分析时变非平稳信号的有力工具，成为现代信号处理研究的一个热点。
Now, Time-Frequency Analysis is one of the top interests in Signal Processing, and more and more research has been put on this topic.
