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- Based on the local characteristics of signals, a local wave method (LWM) can be employed to obtain the instantaneous frequency of signals and the Hilbert time frequency spectrum composed of an energy time frequency three dimensional distribution. 局域波法是基于信号局部特征 ,通过该方法可得到信号的瞬时频率和构成能量 -时间 -频率三维分布的Hil bert时频谱。
- Experimental results showed that it can be a good method to test emboli both from time domain delay and change of characteristics in frequency spectrum. 实验结果表明，从时域延迟和频谱特征变化两方面来检测血栓是一种有应用前景的方法。
- Keywords FMCW microwave collision avoidance radar, multitarget detection,time frequency spectrum analyze, flip-chip, Schottky diodes mixer,HEMT low noise amplifier, power combination; FMCW毫米波防撞雷达;多目标识别算法;时频分析;倒扣技术;肖特基二极管混频器;HEMT低噪声放大器;功率合成技术;
- A filter whose transfer function is matched with the frequency spectrum function of input signal. 其传递函数与输入信号的频谱函数相匹配的一种滤波器。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of uexp( tt/ Pw) Multiply by Carrier with Uniform Phase Noise. 单边递减波电压讯号乘上含有均匀相位杂讯载波之调变讯号时域波形及频谱。
- The Time Domain Wave Form and Frequency Spectrum of Signal Tria(tt/Pw) Multiply by Normal Noise. 三角波电压讯号乘上准常态杂讯之时域波形及频谱。
- An aerodynamic noise is confirmed to be the strongest one according to the test and analysis of the frequency spectrum of the noise from LGA fan. 通过对LGA风机噪声频谱的测试分析，确认其空气动力性噪声最强。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of Rect(tt/Pw) Added by Uniform Noise. 方波电压讯号加上均匀杂讯乘以无杂讯载波之调变讯号时域波形及频谱。
- The Time Domain Wave Form and Frequency Spectrum of Signal eexp(2*tt/Pw) Added by Uniform Noise. 双边递减波电压讯号加上均匀杂讯之时域波形及频谱。
- Alters the frequency spectrum of signals passing through it. 当通过它时能够改变信号的频谱。
- Frequency Spectrum Measurement of Noise of Image Intensifiers[J]. 引用该论文 钱芸生;常本康;童默颖;刘磊.
- The inverted frequency spectrum,in fact, is Fouriers retransform. 倒频谱是频域信号的傅里叶再变换。
- This paper introduces the analysis(time domain analysis,spectrum analysis,time frequency analysis,and artificial neural network analysis) method of surface EMG signal,application of surface EMG signal and its prospect are also included in the paper. 本文介绍了表面肌电的信号分析方法 (时域分析法、频域分析法、时频分析法及人工神经网络等方法 ) ,并介绍了表面肌电信号检测分析技术的应用状况和前景展望
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of Tria(tt/Pw) Multiply by Carrier with Normal Phase Noise. 三角波电压讯号乘上含有准常态相位杂讯载波之调变讯号时域波形及频谱。
- The frequency spectrum energy of time - frequency surface of Short - time Fourier Transform, especially peak value has distinct difference to different swept extent. 油层水淹程度不同,短时博里叶变换时频面上频谱能量,尤其峰值能量大小存在显著差异。
- It is possible that the computer is of low grade, and the time frequency is too low, please change for a new computer. 有可能是主机档次太低,时钟频率过低,请更换主机。
- This paper proposes a new method based on time frequency analysis to detect spikes automatically. 本研究提出了一种基于时频分析的癫痫脑电棘波检测方法。
- Secondly, to the nonstationarity of diesel engine noise, this paper focuses on the extraction of time frequency feature using wavelet scalogram. 其次针对噪声信号的非平稳性，研究基于小波尺度谱噪声分量的时频特征分析。
- On Spectrum Test and Color Management in Print Shop 印刷车间的光谱测量和色彩管理
- M. Akay, "Time Frequency and Wavelets in Biomedical Signal Processing," Endorsed by IEEE Engineering in Medicine and Biology Society, pp.211-420, 1998. 翁国正，“应用小波系数临界法于消除助听器背景噪音之技术”，国立成功大学电机工程学系硕士论文，民国九十二年。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
