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相干噪声     
相关语句
  coherent noise
     APPLICATION OF 2 D WAVELET TRANSFORM IN COHERENT NOISE ELIMINATION
     二维小波变换在消除相干噪声中的应用
短句来源
     Self-adaptive coherent noise attenuation technique
     自适应相干噪声衰减技术
短句来源
     This paper discusses 4 types of processing methods: time-spatial domain frequency splitting random noise attenuation, frequency-spatial domain coherent noise attenuation, waveform match processing and gather data fitting 3-D random noise attenuation.
     首先对资料的质量进行了分析,由于是拼接资料,因此存在着能量不均衡、覆盖次数不均匀、波形不一致以及各类干扰发育等问题; 然后针对这些问题研究了时间-空间域内分频随机噪声衰减、频率-空间域相干噪声衰减、波形匹配处理和数据拟合三维随机噪声衰减等4种处理方法,分别取得了很好的处理效果。
短句来源
     The coherent noise and random noise on the data has been effectively attenuated. The waveform difference between the data has been resolved, the effective frequency and energy in middle and deep strata has been greatly enhanced.
     在对实际资料进行数据优化处理时,根据资料的特点采用了合适的组合方式,处理后资料的品质得到了较大提高,相干噪声、随机噪声得到了有效衰减,波形一致性得到了恢复,中、深层有效频率和有效能量得到了加强。
短句来源
     The Application of KL Transform to Remove Horizontal Coherent Noise in GPR Record
     KL变换消除探地雷达数据中的水平相干噪声
短句来源
更多       
  coherent noises
     Elimination of coherent noises in the read and write of seismic data
     地震资料读写相干噪声的消除
短句来源
     LINEAR COHERENT NOISES AND THEIR ELIMINATION
     线性相干噪声及其消除方法
短句来源
     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
短句来源
     It is necessary to remove coherent noises and random noises in seismic data processing to improve the signal-to-noise ratio.
     要提高地震资料的信噪比,需要去除地震资料中的随机噪声和相干噪声
短句来源
     As the white light has a very short coherent length, the synthesized true color hologram made with the white light is not influenced by the laser speckle and other coherent noises in the holographic recording . This method can effectively improve the quality of color hologram.
     由于利用了白光相干长度极短的特性,把菲涅尔全息术分区记录三基色信息改成白光记录,消除了合成彩色全息图中狭缝衍射产生的激光散斑的影响和其它散射光相干噪声的影响,使彩色全息像能够保留下细微结构和亮度层次的变化,显著改善了彩色全息像的质量。
短句来源
更多       
  coherent artifact noise
     The basic advantage of this white light processing technique is the elimination of the coherent artifact noise that frequently plagues the coherent optical system.
     这种方法既消除了相干系统中不可避免的相干噪声,又保持了相干系统所具有的运算能力。
短句来源
     This method is very simple, and the output images are free of coherent artifact noise.
     这个方法很简单,输出图象没有相干噪声
短句来源
     In order to suppress the coherent artifact noise,a technique of image differentiation utilizing white-light source encoding is descr- ibed and used in concave spherical mirror system and lens system individually.
     为了压抑相干噪声,本文采用白光光源编码技术,分别在凹球面反射镜系统和透镜系统中实现了部分相干光的图像微分。
短句来源
     This system has the advantage of suppressing The coherent artifact noise.
     这种系统具有抑制相干噪声的优点。
短句来源
  “相干噪声”译为未确定词的双语例句
     Because there is speckle noise in SAR image and the background clutter of water is usually very complex, weak target detection is a big challenge for conventional methods.
     SAR图像存在相干噪声以及水面背景杂波的复杂性,传统方法对于弱目标检测存在困难。
短句来源
     The performance of traditional DOA estimation methods becomes worse in the correlated noise fields. A UST-MUSIC algorithm based on unitary spatio-temporal correlation matrices is presented.
     针对传统波达方向(directionofarrival,DOA)估计方法在噪声相干时估计性能下降的现象,提出一种基于空时相关矩阵酉变换的UST MUSIC算法对相干噪声场中的DOA进行估计。
短句来源
     This paper analyzes the hot n oise and disturbance noise from the c hoice of device,the installing of electric,the way of wi re connecting,etc.
     文章从扩声系统的设备选择、电气安装、线材连接、具体使用等方面,细致的分析了诸如热噪声、相干噪声等几种常见噪声的产生原因.
短句来源
     For the processing of seismic data with low signal-to-noise ratio, it is important to eliminate the coherent and random noises.
     对低信噪比地震资料的处理来说,相干噪声及随机噪声的去除是一个很重要的环节。
短句来源
     Analysis of the intermerometric noise at en/decoder in OCDMA system
     相干噪声对OCDMA编解码器性能影响的分析
短句来源
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  coherent noise
Beamforming with the generalized sidelobe canceller for coherent noise attenuation in 3D seismic data
      
This paper presents a new approach for attenuating coherent noise in 3D seismic data.
      
Coherent noise is not aliased and the noise analysis precision and suppression increases as a result.
      
Sensitivity to initial conditions in coherent noise models
      
Sensitivity to initial conditions in the coherent noise model of biological
      
更多          
  interferometric noise
Consequently interferometric noise appears on the pulses of the 80 Gb/s signal after the multiplexing sections.
      
Three paths interferometric noise suppression system for semiconductor laser diodes.
      


We will describe a technique of white light optical information processing with diffraction grating method and some of their applications. This white light technique enables the signal processing to be carried out in complex amplitude rather than in intensity. The basic advantage of this white light processing technique is the elimination of the coherent artifact noise that frequently plagues the coherent optical system. We note that this white light processing technique is capable of processing many complex...

We will describe a technique of white light optical information processing with diffraction grating method and some of their applications. This white light technique enables the signal processing to be carried out in complex amplitude rather than in intensity. The basic advantage of this white light processing technique is the elimination of the coherent artifact noise that frequently plagues the coherent optical system. We note that this white light processing technique is capable of processing many complex signals that a coherent processor may offer. The application may range from complex signal addition, subtraction, to complicated optical parallel processing. Because of the use of spectral broadband light source, this technique is very suitable for color-image processing, enhancement, and restoration. Experimental demonstrations of this white-light processing technique as applied to archival storage of color films, multi-image regeneration, spatial frequency and density pseudocolor encoding, smeared image restoration, etc. will be included.

本文讨论了作者所提出的白光信息处理系统的基本概念,以及用它在进行复数滤波、信号综合及平行光学处理诸方面的若干研究成果。这种方法既消除了相干系统中不可避免的相干噪声,又保持了相干系统所具有的运算能力。值得指出的是,它还具有相干系统所不具有的独特优点,即由于光源本身的相当广阔范围的光谱分布,对多色信号及彩色图象的处理十分有利和相当有效。它为光学信息处理展示了一个新的具有良好前景的方向。

Investigating the speckle pattern of a cross-slit theoretically and experimentally, we note in this paper that the object surface speckle pattern recorded on the recording plate has a 2-D gratingwise structure. After performing an optical Fourier transform on it, at the Fourier transform plane there appears a particular optical intensity distribution, a bright sharp cross-shape halo superimposed on a uniform square-shaped halo. Hence, the laser speckle photography with a cross-slit aperture will offer good quality...

Investigating the speckle pattern of a cross-slit theoretically and experimentally, we note in this paper that the object surface speckle pattern recorded on the recording plate has a 2-D gratingwise structure. After performing an optical Fourier transform on it, at the Fourier transform plane there appears a particular optical intensity distribution, a bright sharp cross-shape halo superimposed on a uniform square-shaped halo. Hence, the laser speckle photography with a cross-slit aperture will offer good quality interferogram with high contrast, low noise, and high sensitivity. Furthermore, the cross-shaped halo facilitates the measurement of fixing the original orientation of object motion as a reference coordinates. The experimental results are well consistent with the theoretical prediction.

用理论和实验的方法研究了十字孔径的散斑特性。把十字孔径用于二次曝光的散斑照相法,以测量物体在平面内的位移(或变形)时,将能显著地提高干涉条纹的对比,降低相干噪声,而且还具有灵敏度高的特点。实验的结果与理论分析得到了很好的一致。

In this paper a non-coherent optical processing method has been presented for images optical processing. This method is very simple, and the output images are free of coherent artifact noise. The properties of the filter, and the loss of spatial information contained in output image as well as the experimental results of using such a filter have been discussed. The influences of radius "a" on the output image have been also observed. The experimental results showed that this method is suitable for adaptations...

In this paper a non-coherent optical processing method has been presented for images optical processing. This method is very simple, and the output images are free of coherent artifact noise. The properties of the filter, and the loss of spatial information contained in output image as well as the experimental results of using such a filter have been discussed. The influences of radius "a" on the output image have been also observed. The experimental results showed that this method is suitable for adaptations in practical application.

本文介绍了一种光学图象处理的非相干光学处理方法。这个方法很简单,输出图象没有相干噪声。对滤波器的性质、输出图象的空间信息损失以及使用这种滤波器的实验结果进行了讨论。也观察了半径“a”对输出象的影响。实验结果表明,这种方法适于实际应用中采用。

 
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