利用奇异值分解法对电磁波形进行指数基函数分解

更新时间:2023-06-17 04:10:49 阅读: 评论:0

S录    I
1、    离骚节选翻译Evaluating EM waveforms by singular-value de-composition of exp on ential basis
functions    1
一、    利用奇界值分解法对电磁波形进行指数基函数分解    1
2、    Fast approximate inversion of TEM data    2
二、    快速近似反演时间域电磁数据    2
Automatic estimation of EM parameters in Tau-Domain    3
三、    自动选取时间域电磁数据参数    3
4^ Simple inversion of time-domain electromagnetic data    4
四、    时间域电磁数据的简单反演    4
5、    Fast AEM data processing and inversion    5
五、    快速处理和反演航空电磁数据    5
6、    A time-domain EM system measuring the step respon of the ground    6
六、    时间域电磁系统测量大地阶跃响应    6
7、    Modeling of the EM inductive-limit surface currents    7
大悲咒意思七、    电磁电导极限表面电流模型化    7
8^ Induced polarization in airborne EM    8
八、    航空电磁中的电导极化    8
张根锡快乐大本营9、    Improving conductivity models using on-time EM data    9
九、    利用通电流电磁数据改进电导模型    9
舞蹈教育10、    Using the moments of a thick layer to map conductance and conductivity from airborne
electromagnetic data    10
十、利用厚层时刻映射航空电磁数据的电导和电导率    10
黄疸的治疗方法1Evaluating EM waveforms by singular-value de-composition of exponential basis functions
Edward M. Stolz and James Macnae
ABSTRACT: Exponential basis functions pre-convolved with the system waveform are ud to convert measured transient decays to an ideal frequency-domain respon that can be modeled more easily than arbitriiry waveform data Singukir-value decomposition (SVD) of the basic functions are ud to asss which specific EM waveform provides superior resolution of a range of exponential time constants that can be related to earth conductivities The pul shape, pul length, transient sampling scheme, noi levels, and primary field removal ud in practical EM systems all affect the resolution of time constants Step respon systems are more diagnostic of long tim
e connts, and hence good conductors, than impul respon systems. The limited bandwidth of airborne EM systems compared with ground systems is improved when the respon is sampled during the transmitter on time and gives better resolution of short time constants or fast decays.
一、利用奇异值分解法对电磁波形进行指数基函数分解
指数基函数预卷积系统波形通常转换测量瞬态衰减到一个理想的频域响应,这样可以更 容易模拟任意波形数据。奇界值分解(SVD)出来的基函数用来评估那些特定电磁波形在指 数范围内对时间常数与大地电导率Z间的关系提供了更优的解决方案。在实际电磁系统中, 波形,脉宽,抽到方案,噪声水平,一次场去除都会影响时间常数的分解。阶跃响应系统通 常貝有较长的时间常数,因此与脉冲响应系统和比,可较好的探测良导体。当采样时间在发 射期时,航空电磁系统与地面系统的带宽极限相比有所提高,并J1小王子读书笔记能更好的分解短时间常数 和快速衰减。
2孕妇不能吃的食物表Fast approximate inversion of TEM data
E.M. Stolz & J.C. Macnae
ABSTRACT: Converting TEM data to an ideal system respon removes interpretational problems associated with the characteristics and imperfections of practical waveforms .It also allows the inductive and resistive limits, defined from frequency domain theory to be trivially calculated for input into fast, approximate inversion programs. Rapid, stable conversion can be achieved by decomposition to a t of exponential basis functions pre-convolved with the system waveform.
The process is applied to 3-D model moving loop SIROTEM data for a dipping conductive plate beneath a conductive overburden. The extracted inductive and resistive limit profiles are inverted to dipping filament loops. The inversions return basic geometrical parameters comparable with tho of the original plate model. Finally, fixed loop SIRPTEM data over the Eloi Cu-Au deposare transformed and inverted. The models returned are consistent with the know geology of the deposit
二、快速近似反演时间域电磁数据
理想男人把时间域电磁数据转换到一个理想系统响应去除了实际波形特征与缺陷的解释性问题。 它
也让从频率域理论到细小计算中定义的电导和电阻极限作为快速近似反演程序的输入。快 速、稳定的转换可以通过一系列的指数基函数与系统波形预卷积得到。
这一过程已应用到上边是导电覆盖层,下边是导电薄板的三维运动模型SIRO的时间域 电磁数据上。提取的电导电阻极限把带倾角的轮廓线描绘岀來,然后反演基本儿何参数与原 始模型薄板进行对比。最后,校止环绕在伊犁奥斯铜■金沉积层上的SIRO电磁数据进行转 换和反演。模型由已知沉积层的几何结构组成。

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标签:电磁   数据   系统   时间   电导   反演   波形   分解
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