1) wavelet transform threshold-value
小波变换阈值
1.
By pre- processing the calibrated testing data of FOG system using wavelet transform threshold-value filtring,all the random error coefficient will be restrained obviously,which is found by analysing the fore-and-aft testing data using Allan variance method.
利用小波变换阈值滤波对光纤陀螺系统标定的测试数据进行预先处理,采用Allan方差法分析滤波前后的测试数据,发现滤波后陀螺各项随机误差系数均得到明显抑制。
2) wavelet threshold-value filter
小波变换阈值滤波
1.
Experiment analysis and comparison indicate that the wavelet threshold-value filter can effectively eliminate the FOG noise, and its anti-noise effect is better than that of classical digital low-pass filter.
小波具有多分辨率分析特性,利用小波变换阈值滤波可以有效地处理光纤陀螺信号的噪声。
2.
The result of testing and statistic analyzing for FOG signal indicated that the wavelet threshold-value filter was successful in restraining signal noise and the effects of it was verified.
针对光纤陀螺信号漂移误差和噪声的影响及陀螺稳定平台系统的特点,研究了滑动滤波、FLP自适应滤波、小波变换阈值滤波3种直接对陀螺输出信号进行数字滤波处理的方案。
3) wavelet transform threshold de-noising
小波变换阈值消噪
4) denoising of nonlinear wavelet transform threshold value method
非线性小波变换阈值去噪法
5) wavelet threshold
小波阈值
1.
Application of wavelet threshold denoising method in the fluorescence analysis of pesticides;
小波阈值去噪法在农药荧光分析中的应用
2.
Analysis of selection rules of wavelet threshold in gravitational abnormal data processing;
海洋重力异常数据处理中小波阈值选择规则分析
3.
Imaging restoration for sparse aperture optical systems based on wavelet threshold and Wiener filtering;
基于小波阈值法和维纳滤波的稀疏孔径光学系统成像的恢复
6) wavelet thresholding
小波阈值
1.
A new speech enhancement method based on multitaper spectrum method and wavelet thresholding is proposed so that a noisy speech power spectrum is obtained.
提出了基于多窗谱法和小波阈值法对带噪语音的短时功率谱进行估计的语音增强改进方法。
2.
It also analyzes for four models how the bias and variance of the multitaper spectrum are affected by the tapers number and estimation noise removal via wavelet thresholding,and further compares them with those of periodograms.
以四种信号模型为例,分析了窗口数和小波阈值法去除估计噪声对多正弦窗谱估计的偏差和方差的影响,并与周期谱图进行了比较。
3.
In theory of estimation with wavelet thresholding, the threshold adapting data can be cal- culated by minimum estimation of risk to improve the SNR of estimation.
根据小波阈值估计理论,通过最小化风险的估计,可计算自适应于数据的阈值,提高估计的信噪比。
补充资料：地理阈值
亦称地理临界值。它将地理系统中的不同状态加以分隔与区分，把某一性质的表现范围加以限制和说明。在此种意义上，地理阈值代表了系统的“状态空间”的非连续性。在一般叙述中，常把地理阈值等同于地理系统边界条件，但二者是有区别的：如果两种不同的状态同时存在于相同的边界条件之中时，地理阈值的表现可能是“非传递性”的转移；而当两种不同状态分置于不同的边界条件之中时，地理阈值的表现可能是“过渡性”地转移。无论是非传递性转移的地理阈值，还是过渡性转移的地理阈值，都使地理系统中不可能具备唯一的、通用的或稳定的解。所谓“解”都是有条件的，都是在地理阈值约束下的解。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条