The improved algorithm can track frequency variation of the time-varying signal with no extra calculation burden.
对算法进行了改进，在不增加计算量的情况下，实现了对频率变化的跟踪。
In the testing of a certain antiaircraft artillery servo system, the signals needed to be measured are time-invariant signal and time-varying signal.
在某型高炮随动系统的测试中，待测信号有非时变信号和时变信号两种。
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.
作为一种日益获得广泛应用的信号处理新技术，小波分析具有良好的时频局域化特性，适应于时变和瞬变信号的分析。
In a practical example, a good result is obtained by the adoption of step-varying TD and predicting under the condition of sampled signal with noise and sampled time varying.
在一个采样时间不固定，且采样信号带有噪声的应用实例中，采用变步长的跟踪微分器加预报的方法得到了较好的结果。
However, the information extracted from a frequency domain signal is based on the signal frequency content, as opposed to the shape or time-varying characteristics of the waveform.
然而，从频域信号中提取出的信息是以信号频率成分而非信号形状为基础。
In order to recover the message carrying signal at the receiving end, we use adaptive controller to compensate the variation of channel gain when the channel is time-varying.
本文提出当信道增益为时变函数时，利用自适应控制器来补偿信道增益的变化，以便在接收端能准确地恢复出信息信号。
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.
时频分析方法分为线性、二次型和自适应等多种方法，它们提供了在时频二维平面上，分析信号时变功率谱的有效手段。
Then the speech signal is pitch adjusted according to this pitch contour, where the original signal with time varying pitch period is converted to a signal of constant pitch period.
然后根据这一轨迹对语音信号进行“基音调整”，将原始的、具有时变基音周期的信号转化为一个具有恒定基音周期的信号。
Present a time-varying parametric model that is LPTV type, and study the relationship between model parametrics and cyclostatistics of its ouput signal. ?
给出了循环平稳随机信号的LPTV时变参数信号模型及该模型参数与信号循环统计量之间的关系。
The Doppler blood flow signal is inherently a nonstationary Gaussian random process whose time-frequency representation associates with the time-varying velocity of blood flow and its variations.
多普勒超声血流信号是一个非平稳的高斯随机过程，其时频分布与血流的速度及其变化有密切的关系。
A vocal signal sequence is treated as that is formed by piling up pitch periods after varying integer delay time.
语音信号序列可以看成是基音周期经整数倍延时后叠加而成。
Speech signal, carrying a large amount of information, is so complex with the character of non-stationary and time-varying.
携带着大量信息的语音信号本身是非常复杂的，并且具有非平稳性、时变性等特征。
A novel time - varying fuzzy controller is presented to compute the variable on - OFF signal sequence to achieve control requirements.
提出了一种新颖的时变模糊控制器计算可变开-关信号序列从而达到控制输出要求。
The time - varying properties can be extracted better when signal being transformed on 2d coordinate plane for the purpose of signal recognition and classification.
将一维信号变换到二维坐标平面往往更有利于描述信号的时变特征，从而实现信号的分类识别。
Psychoacoustics of the human hearing is explicitly included into the algorithm through modifying the MP metric by the time-varying masking threshold of the input signal.
通过计算时变输入信号的心理声学参数，用信号的掩蔽值对匹配跟踪矩阵进行加权。
Chapter 3 considers location of a stationary target with time-varying emitting signal, such as frequency hopping signal and linear FM signal.
在第三章里，主要研究了频率时变信号（如频率捷变信号和线性调频信号）的定位算法。
Expressing speed of speech is influenced by a voiced sound in a vocal signal sequence. A vocal signal sequence is treated as that is formed by piling up pitch periods after varying integer delay time.
在语音信号序列中影响语音表达速度的是浊音，它是基音，是由多次谐波构成的准周期信号。
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.
小波分析是一种日益获得广泛应用的信号处理新技术，它具有良好的时-频局部化特性，因而非常适于分析瞬态或时变信号。
The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.
该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。
Firstly, a DDS-based method for digital-domain synthesis of time-varying Doppler frequency in dynamic GPS signal is proposed in this dissertation.
论文首先基于直接数字频率合成技术提出了一种能够在数字域内直接合成出动态信号中时变多普勒频率的信号合成方法。
To cope with the time varying and Doppler broadened clutter in airborne phased array radars, it is required that the signal processing be adaptive and two dimensional (spatial and temporal).
从一个多通道自回归过程拟合杂波信号的概念出发，提出了用线性预测法实现机载相控阵雷达的时空二维自适应信号处理。
A signal whose frequency, amplitude and phase are time-varying based on the random walk model is presented to describe the sensor output signal of Coriolis mass flowmeter.
提出用频率、幅值和相位均按照随机游动模型变化的信号来描述科氏流量传感器的输出信号。
In this paper, a new method for time-varying ARM A model is introduced. It includes two procedures. First, using one method of signal decomposition, a signal is decomposed into some basic components;
该文提出了一种新的非平稳信号的时变参数ARMA模型分析方法，用它分析数据需两个基本步骤：首先，用一种信号分解方法把信号分解成一些基本模式分量。
In this paper, a new method for time-varying ARM A model is introduced. It includes two procedures. First, using one method of signal decomposition, a signal is decomposed into some basic components;
该文提出了一种新的非平稳信号的时变参数ARMA模型分析方法，用它分析数据需两个基本步骤：首先，用一种信号分解方法把信号分解成一些基本模式分量。
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