1、

Enhancing chirp signal based on rotation of time frequency plane

基于时频面旋转的线性调频信号增强

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2、

Firstly, a time-frequency plane is gained by time-frequency analysis, and then time displacement and frequency information of each component are determined.

首先通过时频分析得到心音信号的时频分析图,确定心音在时间、频率平面内各成分对应的区域信息。

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3、

The Gd-Co films reported here were prepared by radio frequency sputtering and have been proved to have uniaxial anisotropy perpendicular to the film plane.

用射频溅射的方法制备得的钆钴膜具有垂直于膜面的单轴各向异性。

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4、

Single frequency speckle grating film for measuring plane displacement field

单频散斑光栅膜研测面内位移场

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5、

The effects of flapping frequency, wind velocity, angle of attack, plane shape of wing and cambered aerofoil are investigated.

试验中进行了扑动频率、风速、迎角、机翼平面形状、翼型弯度对机翼气动特性影响的研究。

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6、

Its flaw is that after the system state getting to the sliding plane, it will produce high frequency chattering around the sliding plane and the control variable of the system will also produce high frequency chattering.

它的不足主要是当系统运动状态在到达滑动平面后,会在滑动平面附近产生高频抖振,同时系统的控制量也产生高频振荡。

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7、

Through the discrete Fourier transform or complex wavelet transform seismic data from time domain to frequency domain, conversion amplitude spectrum has been calculated to explain the staff not only from the profile, but also from the plane to see the characteristics of thin-layer interference.

通过离散傅里叶变换或复小波变换将地震数据由时间域转换到频率域,转换后计算得到振幅谱,解释人员不但能从剖面上,而且能从平面上看到薄层干涉特征。

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8、

Much progress has been made in transducers, including cylindrical PVDF hydrophone, plane type PVDF hydrophone, cymbal transducer, relaxor-based piezoelectric single crystals transducer, and low frequency and high power small transducer.

介绍了PVDF圆柱型水听器、大面积平板PVDF水听器、钹式换能器、弛豫铁电单晶换能器、小体积低频大功率发射换能器等方面的研究进展。

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9、

Axis symmetrical radial vibration of a thin annular plate with tapered section plane is studied and the equivalent circuit is derived by using electromechanical analogy method. Based on the circuit, the resonant frequency equation are obtained.

基于机电类比原理,给出了锥形剖面薄圆环形聚能器的轴对称径向振动等效电路,由等效电路得出了其径向共振频率方程。

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10、

With the plane Archimedean spiral antenna a calculation of the current on the antenna as well as its radiation is carried out and its frequency independence was verified.

并以平面阿基米德螺旋天线为例,计算了天线上的电流分布和辐射特性,验证了天线的频率无关特性。

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11、

Calculation of the Theoretical Value of High Frequency Electromagnetic Normal Field for plane Boundary

平界面高频电磁波正常场理论值的计算

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12、

By using interferometry telescope, higher frequency information corresponding to the longest baseline can be obtained; however, the U-V plane is just partially covered.

利用天文光学干涉仪成像,可以获取最长基线对应的高频率信息,但往往只能获得部分频域覆盖。

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13、

The visual neural mechanism and frequency characteristic of the temporal high pass filter nonuniformity correction technique for infrared focal plane array were studied.

分析基于时域高通滤波的红外焦平面自适应非均匀校正算法的视觉神经机制以及滤波器的幅频特性。

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