Ricker wavelet 地震
WebMar 12, 2024 · 本文依照参考文献简介 Ricker wavelet 。 参考： [1] Frequency of the Ricker wavelet DOI: 10.1190/GEO2014-0441.1 [2] ... 依据参考文献，实际中的地震波信号有的类似高斯包的一阶导数，或者是分数阶导数，但是可能由于 Ricker 包存在理论基础，被广泛应用。 ... WebOct 1, 2015 · INTRODUCTION. The Ricker wavelet is a well-known symmetrical waveform in the time domain (Ricker 1953 ). In order to better represent practically observed non …
Ricker wavelet 地震
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WebNov 3, 2014 · In this section, we will show that the Lambert W ( x )function (for x < 0) is, actually, a rotation of the Ricker wavelet amplitude spectrum. Multiplying the Ricker wavelet in the time domain by a factor of − 1 2 π ω p , one can have a scaled wavelet, r ~ ( τ) = − π ω p 2 ( 1 − 1 2 ω p 2 τ 2) exp ( − 1 4 ω p 2 τ 2). WebApr 9, 2024 · 国家重大科研装备研制项目"深部资源探测核心装备研发（ZDYZ2012-1）-06子项目金属矿地震探测系统-05课题系统集成野外试验与处理软件研发"资助 ... Ricker wavelet of different frequency. Figure 4. Seismic record of receiver No.1 when r=1. Figure 5. Seismic record of receiver No.2 when r=1.
WebNov 3, 2014 · The Ricker wavelet has been widely used in the analysis of seismic data, as its asymmetrical amplitude spectrum can represent the attenuation feature of seismic wave … Web1.3 Ricker wavelets have been empirically successful Since the original Ricker’s paper, Ricker wavelets have been successfully used in processing seismic signal; see, e.g., [2, 3, …
WebBut the same rule applies the other way: convolution in the frequency domain is equivalent to multiplication in the time domain. S (f)=W (f)*R (f) => s (t)=w (t).r (t) In order to get a wavelet (in time) whose Fourier transform is a Gaussian centered at a certain frequency, you will need to multiply a sinusoid of that certain frequency by a ... WebOct 13, 2024 · 反射地震褶积模型认为，地震记录 s(n) s ( n) 是震源地震子波 w(t) w ( t) 和地下地层反射系数 r(t) r ( t) 褶积的结果。. 其数学表达式，即褶积公式为： [1][2] [ 1] [ 2] s(n) = …
WebMay 29, 2015 · 为什么Ricker wavelet在反射地震中最常用？. 天然地震中在做synthetic seismogram的时候对于pulse只是用一个三角就代替了，为什么反射地震中用Ricker …
WebOct 11, 2024 · Ricker通过地震波动方程推导发现，震源激发的脉冲信号在向下传播的过程中，由于大地的吸收衰减等作用，不再是脉冲信号，而是地震子波。 Ricker后来提出了一个 … otto droneWeb小波在奇异性信号的检测上具有独特的优势，在图像边缘检测、网络异常检测、地震异常与语音异常识别等领域有着广泛地应用[1-5]。 然而用不同的小波处理相同的信号数据序列有着不同的处理结果，为了取得更好的处理结果， Mallat[6]针对图像边缘提取发明了 ... otto drosihnWebApr 12, 2024 · The time step of source wavelet is 0.05 μ s, and the calculation time is 40 μ s. We use the same Ricker wavelet in two numerical simulations, as illustrated in Figure 4 (a). The spectrum of the source wavelet is shown in Figure 4 (b). The peak frequency is 0.5 MHz and the -3 dB bandwidth range is about 0.27MHz to 0.8MHz. otto dr stocktonWebMar 21, 2015 · Errors in the time-depth curve will propagate into your extracted wavelet. What you can do is to first approximate the real wavelet with a simple zero-phase phase wavelet extracted from the autocorrelation of the seismic data (or you can use a Ricker wavelet of a reasonable dominant frequency if you want) and make a synthetic … otto driverlessWebMar 24, 2016 · 2007年，赵爽等人【6】把各地震道分为频率各不相同的Ricker子波集合，利 用多子波分解技术研究含煤砂岩储层，并利用多子波分解处理后的重构数据体消除了煤 层低频强反射干扰，并进行了地震属性预测。 ottod\\u0027ame dressesWebJan 27, 2024 · I have a signal and I want to convolve it with a wavelet and make a wedge model. It is a seismic wedge model and I want to make a single low impedance layer wedge model. I truly appreciated in advance! otto dscWebRicker子波是地震信号分析处理中最常用的地震子波形式，其数学模型为. 图1为Ricker子波示意图，其主频是20 Hz，延迟时间为0.2 s，采样频率为200 Hz/s。可以看出，时域波形和频谱峰值分别对应信号时延和主频。另外，Ricker子波时域和频域都具有紧支性，且能量有限。 otto d\u0027angelo video