نتایج جستجو برای: frequency domain data

تعداد نتایج: 3061574  

Journal: : 2022

The paper presents a new data inversion technique for the transient electromagnetic method (TEM) by converting measured signals into frequency domain. involves search such earth model parameters that there is consistency between synthetic and field data. We use an optimization method, where through numerical simulation at each iteration are determined in accordance with changing parameters. Num...

Journal: :IFAC-PapersOnLine 2021

Abstract Synthesizing controllers directly from frequency-domain measurement data is a powerful tool in the linear time-invariant framework. Ever-increasing performance requirements necessitate extending these approaches to account for plant variations. The aim of this paper develop analysis and synthesis conditions local internal stability H∞-performance single-input single-output parameter-va...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1391

abstract pragmatics is the study of communicative action in its sociocultural context. communicative action includes not only using speech acts (such as apologizing, complaining, complimenting, and requesting), but also engaging in different types of discourse and participating in speech events of varying length and complexity. the present study aimed to investigate the assessment of pragm...

Motion-JPEG is a common video format for compression of motion images with highquality using JPEG standard for each frame of the video. During transmission through a noisychannel some blocks of data are lost or corrupted, and the quality of decompression frames decreased.In this paper, for reconstruction of these blocks, several temporal-domain, spatial-domain, andfrequency-domain error conceal...

Journal: :فیزیک زمین و فضا 0
شهریار خاص احمدی موسسه ژئوفیزیک - دانشگاه تهران علی غلامی موسسه ژئوفیزیک - دانشگاه تهران

velocity analysis is one of the most important step in seismic data processing. it affects not only many processing steps directly and indirectly, but also is known as a primary interpretation of the data. however, it can also be assumed as one of the most time consuming processing step. the conventional velocity analysis method measures the energy amplitude along hyperbolic trajectories within...

Journal: :journal of mining and environment 2013
maysam abedi gholam-hossain norouzi nader fathianpour ali gholami

this paper describes the application of approximate methods to invert airborne magnetic data as well as helicopter-borne frequency domain electromagnetic data in order to retrieve a joint model of magnetic susceptibility and electrical resistivity. the study area located in semnan province of iran consists of an arc-shaped porphyry andesite covered by sedimentary units which may have potential ...

This paper describes the application of approximate methods to invert airborne magnetic data as well as helicopter-borne frequency domain electromagnetic data in order to retrieve a joint model of magnetic susceptibility and electrical resistivity. The study area located in Semnan province of Iran consists of an arc-shaped porphyry andesite covered by sedimentary units which may have potential ...

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