Method Analysis on Coherent Noise Elimination of Vibroseis Data 可控震源资料相干噪声消除方法分析
A particularly troublesome type of multiple produces the coherent noise known as singing. 一种特别伤脑筋的多次反射引起同相干扰,这种干扰称为鸣震。
Noise elimination is a necessary, there are all kinds of coherent noise on seismic records because of many reasons caused by shooting, propagation and receiving of seismic wave. 去除噪声是必需的地震数据处理过程。由于地表条件和地震波激发、传播以及接收条件等诸多方面的原因,时常引起地震记录上出现各种相干干扰波。
Coherent noise is not aliased and the noise analysis precision and suppression increases as a result. 对规则噪声可实现无假频采样,室内的噪声分析和噪声压制的精度随着提高;
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
Processing results of synthetic and real seismic data say that the method is very effective because it suppresses coherent noise as much as possible, without damage of effective signals in all frequency bands. 合成数据以及实际数据处理的结果表明,该方法是很有效的,在尽可能抑制相干干扰的同时,有效信号在各个频段的能量都得到了很好的保持。
In order to remove these coherent noise, the method of KL transform are discussed and implemented in this paper? 探讨了采用KL变换消除这些水平相干噪声的方法,并给出了具体的实现步骤。
Prestack coherent noise elimination is an important study topic in seismic data processing. 叠前压制相干噪音是地震资料处理技术研究中的重要课题之一。
The parameters contain impulse noise, memory effect, scan correlated shift, coherent noise, random noise, dropped lines, inoperable detectors, saturated detectors, MTF, system resolution. 辐射性能参数包括脉冲噪声、记忆效应、扫描相关偏移、一致噪声、随机噪声、丢失行、不可操作探测器、饱和探测器、调制传递函数、系统分辨率。
The theory of optimized array filtering is advanced to cope with the multi-channel seismic data which include effective wave and coherent noise. 最优化列阵滤波理论是针对一级包含有效波和相干干扰波的多道记录信号而提出的。
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
The method for preprocessing the crosswell seismic data is introduced and discussed from some coherent noise pressing aspects, such as space attribute establishing, data sorting ( drawing gathering), trace editing, spectrum analyzing, random noise pressing, and tube wave pressing etc. 介绍了井间地震资料预处理方法,从空间属性建立、数据选排(抽道集)、道编辑、频谱分析、随机噪声压制和管波等相干噪声压制诸方面进行了讨论;
Surface-related multiple ( SRM) is a coherent noise with strong energy especially in marine seismic data. 表面多次波是一种相干干扰,在海洋地球物理勘探中表面多次波尤为明显。
Array filtering is applied to multichannel seismic data, so that coherent noise is suppressed as much as possible while effective wave is preserved very well. 它通过对一组多道记录作列阵滤波处理,让相干干扰信号尽可能得到衰减,同时完好保存有效信号。
Separation of Wide-Band Coherent Noise Signals in Acoustic Based Diagnosis 声学故障诊断中的宽带相关噪声信号分离方法
Coherent Noise Elimination Technique Based on Wave Field Transform Using Apparent Velocity 基于视速度的波场变换的叠前强相干噪音压制技术
The multiple is a kind of coherent noise which always exists in seismic records, especially in marine dataset. 多次波是地震记录中一种常见的相干噪音,尤其是在海洋地震记录中。
The application of linear Radon transform in coherent noise elimination and weak signal extraction 线性Radon变换在弱信号提取及强干扰噪声抑制的应用
In this filtering, noise elimination is achieved by optimization process instead of wave mixing process, so that coherent noise is suppressed to raise signal/ noise ratio, without resolution damaged. 这种滤波以最优化过程取代了混波过程去噪,使得信号在不降低分辨率的条件下压制相干噪声,提高信噪比。
Prestack coherent noise suppression via filtering in different velocity domains 压制叠前相干噪音的速度变换域滤波方法
And then, establish the adaptive thresholding algorithm. Thus, we get a new adaptive threshold denoising method fit for coherent noise. 并在此基础上确定了自适应阈值计算方法,建立了新的阈值去噪法,可用于去除相干噪声。
The processing results of synthetic and practical data showed that the 3D beamforming filtering method presented by the paper can effectively eliminate a variety of coherent noise. 合成资料和实际资料的处理结果表明,本文提出的三维聚束滤波方法能够有效地消除各种相关噪声。
The coding in incoherent light-source is used to restrict the coherent noise to obtain clearer images. 采用编码非相于光源抑制相干噪音,使输出图像更为清晰。
The application of a scattering light as reference light in making holograms reduces the coherent noise of chromatic aberration greatly. 采用散射光作为参考光记录全息片,大大降低了相干噪声。
Some de-noise technologies were used to attenuate noise and improve S/ N of profiles, including pre-stack coherent noise attenuation in F-X domain, surface conformity anomalous amplitude pressing, self-adapt noise simulating rejection, anomalous seismic traces editing by statistics method and post-stack random noise attenuation. 针对不同干扰波采用叠前F-X域相噪音去除、地表一致性异常振幅压制、自适应噪音模拟剔除、统计法异常地震道编辑、叠后随机噪音衰减等去噪技术,提高了剖面信噪比。
Furthermore, a method of hybrid optical wavelet transform was presented to eliminate coherent noise. 此外,针对相干噪声问题,还实现了一种混合光学小波变换。
The regular noise, also called the coherent noise, mainly contains: surface waves, sound waves and multiples, etc. The irregular noise is the so called random noise. 规则噪声也可以称为相干噪声,主要包括面波、声波、多次波等。不规则噪声通常称为随机噪声。
As a kind of coherent noise, multiples can reduce S/ N ratio of seismic data and disturb the reality and reliability of seismic imaging. 作为一种相干噪声,多次波降低了地震资料的信噪比,制约着分辨率的提高。如果不能有效地压制,多次波将影响地震成像的真实性和可靠性,以及干扰地震资料的解释。