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frequency-wavenumber domain中文是什么意思

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用"frequency-wavenumber domain"造句"frequency-wavenumber domain"怎么读"frequency-wavenumber domain" in a sentence

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  • 频率波数域

例句与用法

  • In term of analyzing and summarizing the existing achievement , propose an advanced and practical wavefield extrapolation operator and arithmetic of forward modeling and migration , which obtain numerical simulation and analysis completely and systemically and exploited new field of fractured reservoir seismic wavefield numerical simulation and applicationin in frequency - wavenumber domain
    在总结、分析前人研究成果的基础上,提出了具有前瞻性和实用性的波场延拓算子与正演、偏移算法,较系统全面地进行了数值计算与分析,开辟了频率?波数域缝洞储层地震波场数值模拟与应用的新领域。
  • The paper concentrates on seismic wave - field forward modeling and migration for the fractured reservoir . it researches the wavefield extrapolation operator for lateral variation of velocity , design four theoretical models and seven practical models with fracture and cavity . base on the progenitor , in the frequency - wavenumber domain with the pspi wavefield extrapolation operator and arithmetic of forward modeling and migration that applied lateral variation of velocity which is strong , the paper obtains the result of numerical simulation and the wavefield characteristic by the way of the forward modeling and depth migration of poststack seismic wavefield
    本文围绕缝洞储层地震波场正演与偏移问题,研究了适用于横向变速波场延拓算子,建立了四个理论的缝洞模型和七个实际的缝洞模型,在总结、分析前人的研究成果的基础上,利用适合横向速度剧烈变化的相移加插值的波场延拓算子,在频率?波数域对上述的地质模型进行正演、偏移处理,最后得到了缝洞储层地震波场的一些特征。
  • Author , starts from the one - way wave equation of wavefield extrapolation , research the relationship and transform condition of wavefield extrapolation operators , and propose the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) which can adapt severe lateral velocity variations , in frequency - wavenumber domain , and the improved wavefield extrapolation scheme , also give the method to improve the computation efficiency . the achievement establishes the theoretic basis of the whole research
    首先,从波场延拓的单程波方程出发,系统地研究了频率波数域的波场延拓算子之间的相互关系和转换条件并在此基础上提出了能适应剧烈横向变速的频率波数域稳定的变参考慢度rytov近似广义屏波场延拓算子( vrselrf )和部分波场延拓改进方案及提高运算效率的措施,为整个研究打下理论基础。
  • Author , secondly , starts from the approximate expandness of square root operator , perform mathematical calculations for finite difference operator in frequency - space domain , fourier finite difference operator in mixing domain ( frequency - space and frequency - wavenumber domain ) and general screen operator in mixing domain , compare and discuss their precision of their wavefield , adaptability for lateral velocity variations , computation efficiency and stability . thirdly , author , applies the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) in frequency - wavenumber domain , to the prestack and poststack forward modeling and depth migration
    第二,从平方根算子的近似展开出发对频率?空间域的有限差分算子、混合域(频率?空间域;频率?波数域)的fourier有限差分算子、混合域的广义屏算子进行了推导并对其波场描述精度、对横向变速的适应性、计算效率和稳定性进行了比较与评述。
  • From 1920s up to now , various techniques and methods for wave field decomposition , propagation and migration / imaging have been well developed , such as the kirchhoff asymptotic method , frequency - wavenumber domain phase - shift and phase - shift - plus - interpolation methods , and the one - way wave equation based phase - screen and generalized screen methods , etc . wave field extrapolation in these methods is implemented based on the expansion of the wave field by sets of basic functions like spatial fourier harmonies , modes , and green ' s functions
    自上个世纪二十年代至今,波场分解、传播与偏移成像技术经历了将近一个世纪的发展,形成了多种不同的方法,如kirchhoff波动方程高频近似解方法,频率-波数域的相移( phase - shift )方法和相移-内插( pspi )方法,以及在混合域中基于单向波动方程的相位屏、广义屏方法等。
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