正演

• With numerical modeling from this method in several tectonic units in the north part of north china , the velocity structure of reflection p wave was obtained from inversion and compared with the forward solution
  本文将该方法进行了数值模拟并应用于华北北部的几个不同构造单元，反演得出了其反射p波速度结构，并与正演结果进行了对比。
• Seismic data processing practices demonstrate that the seismic convolution model can be used to correct transmission attenuation component by means of impedance inversion , with the merit of avoiding the screen effect of strata
  采用含透射衰减的褶积模型做正演运算，能够校正地层透射对波阻抗反演结果的影响，尤其能够消除地层的遮罩现象。
• At present , there are more than 30 enterprises overseas that specialize exploitation and distribution of fem software , such as america , canada , britain , etc . the products include msc / emas , electro , ansys , and so on
  国外，探地雷达正演计算主要集中在三维模型的研究上。 1993年，中国地质大学应用地球物理系的邓世坤教授曾作过这方面的工作。
• By phase displacement forward method , we synthesized some two - dimensional geoelectrical sections , for example 2 - d dipping interface model , 2 - d dual geoelectic interface model and concrete pipeline model in homogeneous soil media
  并利用相位移正演方法建立了四种地电模型，用以认识雷达剖面的特征、指导gpr剖面的地质解释和验证偏移方法的有效性。
• This paper , through the staggered - mesh finite difference simulations of the wave equations , simulated the propagation of the seismic wave and relevant zero offset time record in the various transversely isotropic elastic random medium models
  摘要本文通过交错网格有限差分正演，模拟了平面地震波在二维横各向同性弹性随机介质模型中的传播及其自激自收时间记录。
• Generally speaking , when the fractural reservoir is complex , the record of the forward is disorder , the event is interrupted and the difference of its " energy is great , the other way round , the record of the forward is
  一般而言，当地下介质复杂时，正演记录中反射杂乱，同相轴的连续性很差而且反映的能量差异很大；当地下介质简单时，其正演记录中反射也很规则。
• Via the forward modeling in the 2 - d transversely isotropic elastic random medium , we studied the change features of the wave field characteristic quantities as changing the medias autocorrelation length and anisotropic coefficient
  我们通过在二维横各向同性弹性随机介质中的正演模拟，研究当自相关长度以及介质的各向异性系数变化时，对应的上述波场特徵量的变化特点。