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- instantaneous frequency error 瞬时频率误差
- The sampling clock frequency error can cause ICI. 采样时钟频率偏差将导致ICI。
- The instantaneous frequency of seismic signal could be derived by Hil-bert transformation. 用希尔伯特变换的方法可以求出地震信号的瞬时频率.
- The excursion of instantaneous frequency representation will be resulted when EFT is applied to signals with rapidly varying frequency contents. 对于具有恒定幅度的调频信号而言，瞬时频率代表了其全部的信息，可以据此对信号进行识别和分类。
- It stems from the concept of instantaneous frequency, and it can describe accu-rately the local properties of dynamic data in the time-frequency plane. 该方法源于瞬时频率的概念,它能把动态信号的局部特征正确地在时频域内予以描述。
- In the paper, the method to estimate instantaneous frequency of AM-FM signals using the peak of the WVD and its performances are studied. 该文研究了应用WVD谱峰检测估计AM-FM信号的瞬时频率的方法及其性能。
- The method of TLS-ESPRIT combining the mathematical statistics is presented for obtaining the multi-component signal instantaneous frequency (IF). 首次提出利用TLS-拓广ESPRIT结合数理统计方法求解多分量信号平均频率。
- A robust CAB algorithm is proposed in this paper which overcomes the sensitivity to the Cycle Frequency Error (CFE). 针对这一不足,本文提出了对循环频率误差稳健的循环自适应波束形成算法。
- Furthermore,by applying instantaneous frequency measurement algorithm to this system,we can get high estimation accuracy. 此外,还把瞬时测频算法应用到该系统中,取得了很高的测频精确度。
- Differing from frequency error track, it avoid spurious modulation and complexity caused by phase-locked loops. 与频率误差跟踪不同，它避免了锁相环引入的寄生调制和复杂性。
- On the basis of this, the well restrained inverse acoustic impedance and instantaneous frequency are jointly used to predict the overpressure of Yangxia sag, Kuche depression. 在此基础上，利用井约束反演的波阻抗与瞬时频率联合对库车坳陷阳霞凹陷内的超压带进行了预测。
- Our results of the SAWF ares insertion loss about 8 dB, centre frequency error less than 60 kHz and Q value more than 590. 实验结果;主要技术性能指标达到插入损耗约8 dB;中心频率偏差小于60kHz;Q值则超过590.
- Lastly, The jamming effectiveness is emphatically analyzed in the presence of bit error, bit width error and carrier frequency error. 最后分析了干扰信号在存在误码、元宽度误差以及载频误差情况下的干扰效果。
- Under Tie-Line Bias Control (TBC) pattern, the area frequency modulation performance is affected directly by the value of frequency error factor k in area control error (ACE). 在TBC控制模式下,区域控制偏差(ACE)中频率偏差系数k的取值直接影响区域调频性能。
- The main part of controlling system is a Monolithic Processor 89C51, digital filtering, phase measuring and frequency error calculating were accomplished by software. 选用89C51单片计算机作为控制系统核心，由软件完成数字滤波、相位检测及频率偏移量计算；
- These instantaneous frequencies are taken as the input pattern to train the Neural Network classifier. 这些瞬间频率可以被当作样本输入类神经网路分类器。
- Delpart N,et al.Asymptotic wavelet and gabor analys extraction of instantaneous frequencies[J].IEEE Trans.IT,1992(3). 吴江标;等.;基于小波变换的相位编码信号脉内特征提取[J]
- The relationship between wavelet ridge and instantaneous frequency is analyzed and a new method of the mechanical characteristic test of the wiper motor based on wavelet ridge algorithm is proposed. 对实测数据进行处理的结果表明,该方法能够实现无传感器的刮水器电动机机械特性快速准确测试。
- 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。
- By decomposing original signal into simple oscillation modes empirically, we can obtain meaningful instantaneous frequencies. 藉由解析原始讯号成数个简单的振动模态，获得具物理意义的瞬间频率。
