1、

This method uses wavelet packet decomposing the WVD of the signal and reconstructing the time frequency diagram according to the decomposition coefficient. It can remove cross-term efficiently. Theoretical analysis and experimental results proved the validity of the method.

基于小波包分析,利用小波包对信号的威格纳时频分布进行分解,并利用分解系数重构时频图,使交叉项得到抑制和改善,实验结果表明此方法简单有效。

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2、

As an example, the counting results produced by the program is processed, and the comparison diagram of theoretical frequency and experimental frequency is obtained, which can be used in χ 2 checking.

最后根据程序生成的模拟计数进行了处理,获得了理论频数和实验频数的对照图;进一步可以进行x2检验。

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3、

The digital simulation facing system block diagram in frequency domain

面向系统方块图的频域数字仿真方法

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5、

Frequency characteristic of capacitor-coupled basic common-emitter amplifier has been analyzed, the complete frequency characteristic function and Bode diagram are given.

系统性分析了电容耦合基本共射放大器的频率特性,得到了比较完整的频率特性函数和波德图。

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6、

Have studied dynamic analysis of socle beam structure and undamped-free vibration system. Natural frequency and mode of vibration computed have a comparison between interval and certain parameters on diagram about structural mode of vibration.

研究了悬臂梁结构和无阻尼自由振动系统的动力分析问题,计算的固有频率和振型与确定性参数计算值结果做了比较,并分析了结构各阶模态图。

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7、

we recorded the frequency chart for vibration of its exterior parts, and acquired the frequency spectrum diagram within 10000 hz.

并通过试验记录了各主要外部构件的振动特性,得到了10000Hz以内的频谱图;

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8、

Finally, the article introduces the BITS equipment ( Clockstar) that the author participates in tapping in WRI ( Fiberhome under WRI), which applies the DDS technique and Different Frequency Multiplication technique to the equipment and analyzes the circuit diagram tapped by the author himself.

论文最后介绍本人在武汉邮电科学研究院(烽火通信公司)亲自参与开发的BITS设备Clockstar,并将DDS技术、差频倍增技术应用于该设备,分析本人实际制作的电路。

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9、

in the part of experimental model analysis, the spectrum analyzer is used to measure function diagram of overall frequency response;

在实验模态测试部分,本研究使用频谱分析仪,量测出整机之频率响应函数图形,求解工具机整机结构之动态分析;

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10、

Its circuit block diagram is given on the basis of frequency spectrum analysis.

在对输出结果频谱分析的基础上给出了电路原理框图.

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11、

The paper mainly researched in sampling and storing echo signal of the millimeter-wave frequency stepping radar and signal processing. The echo signal is used for the Inverse Fast Fourier Transform to obtain the target one-dimensional distance diagram, and gain the target distance, and so on.

本文主要研究毫米波频率步进雷达目标回波信号的采集存储和信号处理,对目标回波信号采用IFFT脉冲压缩处理得到目标一维距离成像,提取目标距离等信息,并利用MFC编程实现这一过程。

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12、

Ask out adding damping laminated constraint layer around the frequency response curve contrast diagram, analyze its vibration characteristics.

求出添加阻尼层合约束层前后的频率响应曲线的对比图,分析其振动特性。

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