1) incoherent noise
非相干噪声
1.
This kind of beamformer can eliminate incoherent noise when signals pass Wiener filter,then achieve a better speech-enhance effect by linear constraints minimum variance beamforming.
该波束形成器首先让信号经过维纳滤波器消除非相干噪声,而后经过经典的线性约束最小方差处理,最终达到较好的语音增强效果。
2) coherent noises
相干噪声
1.
The τ-p transform is one of the important techniques to eliminate coherent noises and separate wave fields,but the operator aliasing artifacts and edge effect artifacts affect its resolution,therefore the conventional τ-p transform can t be used simply.
τ-p变换是消除相干噪声、波场分离的重要方法之一,但常规τ-p变换存在算子假频和端点效应,分辨率太低,无法直接使用。
2.
It is necessary to remove coherent noises and random noises in seismic data processing in order to improve the signal-to-noise ratio.
要提高地震资料的信噪比，需要消除地震资料中的随机噪声和相干噪声。
3) coherent noise
相干噪声
1.
Study on coherent noise attenuation using radial trace transform filtering;
径向道变换压制相干噪声方法研究
2.
Study on using radial trace transform to depress coherent noise in high-density acquired data;
径向道变换压制高密度采集资料中的相干噪声
3.
Self-adaptive coherent noise attenuation technique;
自适应相干噪声衰减技术
4) Speckle Noise
相干斑噪声
1.
Speckle Noise Separation is an important problem in the remote sensing technology application.
相干斑噪声分离是遥感技术应用中的一个重要问题,依据相干斑噪声图像的产生机理和信道特征,提出了适合非线性混迭环境下的相干斑噪声分离模型,设计了一个基于非线性混迭的相干斑噪声分离算法,实验证明,经过算法处理,有效地降低了图像的相干斑指数,保持了图像的细节特征。
2.
An efficient method based on multiresolution hidden Markov model of wavelet-field to suppress the speckle noise in synthetic aperture radar (SAR) images is presented.
针对合成孔径雷达(SAR)图像固有的相干斑噪声,提出了基于小波域多尺度隐马尔可夫模型(HMM)的去噪方法。
3.
Synthetic aperture radar(SAR) images are corrupted by multiplicative speckle noise which decreases correlation between adjacent pixels,increases the information entropy and limits the performance of the classical coder/decoder algorithms in spatial domain.
SAR图像固有的乘性相干斑噪声降低了图像的相关性,增加了信息熵,影响了图像压缩的性能。
5) speckle
[英]['spekl] [美]['spɛkḷ]
相干斑噪声
1.
Classification of SAR Images in the Presence of Speckle;
相干斑噪声背景下的SAR图像分类方法研究
2.
This paper mainly deals with speckle reduction in SAR images based on the spatial orientation tree structure in the wavelet domain.
论述了在小波域中通过空间向树结构对合成孔径雷达(SAR)图像相干斑噪声的抑制。
3.
This paper mainly deal with a new speckle reduction algorithm in high resolution SAR images based on wavelet transform.
文章主要提出了一种新的基于小波变换对高分辨率合成孔径雷达(SAR)图像相干斑噪声抑制的算法。
6) coherent speckle
相干斑噪声
1.
This paper deals with coherent speckle reduction in high resolution SAR image based on wavelet transform.
论述了基于小波变换对高分辨率合成孔径雷达(SAR)图像的相干斑噪声进行抑制。
2.
Because coherent speckle in the SAR images badly affects the post-processin -g of SAR images,which makes segmentation, classification and acquisition of an -other information in SAR images complicated,speckle reduction become to the first s.
由于SAR图像中存在着显著的相干斑噪声，使SAR图像的分割，分类和其它信息的提取过程变得复杂，因此相干斑的抑制成为SAR图像后处理的第一步。
补充资料：相干散射和非相干散射
再辐射的光量子频率和被吸收的光量子频率准确相等的散射过程称为相干散射。在相干散射的情况下，源函数准确地等于平均辐射强度。再辐射的光量子频率和被吸收的光量子频率不相等的散射过程称为非相干散射。在天体物理中，存在一系列因素使散射过程成为非相干散射。主要的因素是：原子的能级有一定的宽度、原子的热运动和湍动以及压力效应等。对于非相干散射，源函数是相当复杂的。
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