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    APPLICATION AND IMPROVEMENT OF FINITE-ELEMENT METHOD IN FORWARD CALCULATION OF GEO-ELECTROMAGNETIC FIELD
    有限元法在大地电磁场正演计算中的应用及改进
    3D RESISTIVITY FORWARD CALCULATION ACCELERATEDBY ICCG ITERATION TECHNIQUE
    利用ICCG迭代技术加快电阻率三维正演计算
    First of all, the relief of the first layer must be known, andthen the field value of the first field interface is gained by forward calculation.
    该方法是在知道第一层界面起伏情况下,通过正演计算出第一场界面的场值,然后再由总场值减去正演的第一层场值,最后反演下一层界面。
    Seismic wavelet is an important parameter sequence for both the forward calculation and the inversion of seismic records.
    无论是在地震记录的正演计算或反演过程中,地震子波都是一个十分重要的参数序列,如果子波不准,则正演结果就不精确,与实际地震资料也难以吻合;
    FORWARD CALCULATION AND ANALYSIS OFELECTRICAL SOUNDING CURVES OF THREEINCLINED LAYERS
    三层倾斜层的电测深曲线正演计算与解析
    2 D FORWARD CALCULATION OF LINE SOURCE CSAMT AND CHARACTERISTICS OF ITS RESPONSES
    线电流源声频大地电磁测深的二维正演计算及响应特点
    The Forward Calculation of Topography and Noise Beared in the Multiple-band Remotely Sensed Data
    利用正演计算方法分析地形和噪音对多波段遥感数据的影响
    By use of the finite difference method, which is based on transmission network proposed by Madden and Mackie, we completed forward calculation and demonstrated in detail the effect of resistivity and susceptibility on MT response. It is conformed that the susceptibility mainly affects the in-phase components of magnetic signal, but a little effect on the quadrature components of magnetic and electrical signal.
    利用Madden和Mackie等所提出的基于传输网络的有限差分算法,实现了其正演计算,并详细地阐述了电阻率和磁化率对大地电磁响应的影响,证实了磁化率主要是影响磁场信号的同相分量,而对磁场信号的异相分量和电场信号的影响比较弱。
    That is, althought only one forward calculation is required in eachinversion iteration, however, it requires tens of inersion iterations and each iterationcrquries much hours, so the inversion is much more time-consuming.
    因为,尽管每次反演迭代仅需一次正演计算,但传统的最小构造反演通常需几十次迭代才能收敛,而电阻率三维反演每次迭代需时较长,反演依然耗时太多。
    The program compile with BASIC language and O'NILLs filter coefficient can be used for forward calculation with the gived model(pi,hi).
    NILL 的滤波系数,利用BASIC 语言编制的。 它根据给定的地层模型(pi,hi)可作正演计算
    Based upon the existed problems in diffraction seismic tomography,in this paper,we firstly have solved the forward calculation of the two dimensional wave equation using non-Born or Rytov approximation method;
    本文首先解决了声波方程的非Born近似的正演计算问题,从而获得理论上不带近似的正演数据;
    The phases of direct P, S and converted SP waves in the displacement seismograms, produced by twice integration of the observed accelerograms, are identified via forward calculation using Green's functions for homogeneous semi-infinite elastic medium, and used in the inversion.
    以均匀半无限弹性介质的格林函数解释路径效应,并通过正演计算识别由两次积分得到的位移地震图中的直达 P 波、直达 S 波和 SP 转换波震相,然后用这些震相进行矩张量反演.
    It is thought that under normal eonditions a vertical line unite formula replaces a cubic formula in forward calculation, thus increasing the speed of calculation about 20 times besides assuring certain calculation precision.
    其结果表明,在通常情况下,用直立线元公式代替立方体公式进行正演计算,除保证一定计算精度外,还可提高计算速度近20倍。
    By using 3-D gravity forward calculation,we obtained the deep gravity anomalies of Tai-wan from its Bouguer anomaly. Its depth corresponds to the lower crust.
    经过三维重力正演计算,我们从台湾的布格重力异常中求得了深部重力异常,其深度相当于地壳下层。
    3. Carrying out forward calculation with computer and repeating interactive modification until sat-isfactory results have been obtained;
    (3)用计算机进行正演计算,不断迭代修改,直至得到满意的给果;
    n this paper, the data acquisition, the calculation of the Standard Sample Values, if he inverse calculation, the forward calculation, the graphic display for interpretation results and if he Calculation Precision are discussed in using the hoe foed automatic direct interpretation method for resistivity Sounding.
    本文对应用Koefoed法自动直接解释电测深曲线中的数据采集、归化采样值的计算、反演计算、正演计算、图象处理以及计算精度等问题作了讨论。
    Starting with AVO forward calculation, this paper gives analysis to the AVO abnormal characteristic of gas sand verified by drilling and proposes the AVO negative abnormal characteristic of shallow gas reservoirs in Yinggehai Basin.
    从AVO正演计算入手,分析了已被钻井证实的含气砂岩的AVO异常特性,提出了莺歌海盆地浅部气层所具有的AVO负异常的特殊规律,探讨AVO技术在莺歌海盆地找气的应用前景.
    In this paper, the data acquisition,the calculation of the Standard Sample Valves,the inverse calculation,the forward calculation,the graphic display for interpretation results and the calculation precision are discussed in using the Koefoed automatic direct interpretation method for resistivity sounding. The softwares of automatic interpretation for resistivity sounding are developed.
    讨论了应用Koefoed法自动直接解释电测深曲线中的数据采集、归化采样值的计算、反演计算、正演计算、图形显示以及计算精度等问题,并介绍了由作者开发的一套完整的电测深自动解释软件。
    For electromagnetic scattering and inverse scattering problem in inhomogeneous media, calculating Hankel transform rapidly, accurately is often required in order to perform efficient forward calculation.
    在非均匀介质电磁散射、逆散射等领域中,经常需要快速、精确地计算汉克尔变换来完成高效率的正演计算
    The forward calculation equations are derived for MT in the EDA type anisotropy media, and numerical simulation of apparent resistivity consists of several models with different frequency and observations is presented.
    推导了EDA型层状各向异性介质大地电磁测深正演计算公式 ,对多种模型从不同的频率、测量方向计算了地表视电阻率曲线。
 

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