Optimization of frequencies used in direct sensing by inversion

  • 22 Pages
  • 3.20 MB
  • English
Wave Propagation Laboratory , Boulder, Colo
Thermosphere -- Temperature -- Microwave measurements., Linear operators -- Generalized inverses., Fredholm opera
StatementOtto Neall Strand.
SeriesNOAA technical report ERL 202-WPL -- 14., NOAA technical report ERL -- 14., NOAA technical report ERL -- 202.
ContributionsWave Propagation Laboratory., United States. National Oceanic and Atmospheric Administration.
The Physical Object
Paginationiii, 22 p. ;
ID Numbers
Open LibraryOL17726002M

Get this from a library. Optimization of frequencies used in indirect sensing by inversion. [Otto Neall Strand; Wave Propagation Laboratory,; United States. National Oceanic and Atmospheric Administration,].

REMOTe SENSING OF ENVIRONMENT 2, () Optimization of Spectral Intervals for Remote Sensing of Atmospheric Temperature Profiles MICHAEL P. WEINREB and DAVID S.

CROSBY National Environmental Satellite Service, NOAA, Washington, D.C. An expression to evaluate the information content of solutions of the radiative transfer equation other than the minimum Cited by: To show the advantage of the topology optimization, the design example focuses on a frequency regime lower than the center of the original BG (i.e.

Hz). For this purpose, five target frequencies of,and Hz are : Jaesoon Jung, Seongyeol Goo, Junghwan Kook. This study is an attempt to outline unified principles addressing such important aspects of inversion optimization as accounting for errors in the data used, inverting multi-source data with different levels of accuracy, accounting for a priori and ancillary information, estimating retrieval errors, clarifying potential of employing different Cited by: Moreover, the forward problem of seismic data as a function of frequency is non-linear; therefore, in order to solve the inverse problem, global optimization techniques are applied: Iterative Solution of Generalized Inversion, Genetic Algorithms and Particle Swarm Optimization.

Inversion Optimization in Remote Sensing 69 where K is the matrix of the coefficients K ji. If the number of measurements is equal to the number of unknowns, the solution of Eq.

(2) is straightforward: a ˆ =K 1 f* (N f = N a), (3) where K-1 denotes the inverse matrix operator. For the matrix K with the. This study is an attempt to outline unified principles addressing such important aspects of inversion optimization as accounting for errors in the data used, inverting multi-source data with Author: Oleg Dubovik.

Optimization of Manufacturing Systems Using the Internet of Things extends the IoT (Internet of Things) into the manufacturing field to develop an IoMT (Internet of Manufacturing Things) architecture with real-time traceability, visibility, and interoperability in production planning, execution, and control.

This book is essential reading for. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sens A computational method for full waveform inversion of crosswell seismic data using automatic differentiation.

Computer Physics CommunicationsOptimization by Direct Search: New Perspectives on Some Classical and Modern by: PDF | On Jul 1,Hugo Hidalgo-Silva and others published Nonsmooth nonconvex optimization for geosounding inversion | Find, read and cite all the research you need on ResearchGate.

An optimization approach to the frequency-domain inverse problem for a nonuniform LCRG transmission line inversion (FWI) methods are frequently used in. In this paper, based on the Basis Pursuit De-Noising (BPDN), the sparse optimization term was improved using the low-frequency sparse double-constrained inversion, and the residual term was added to the L2 norm low-frequency model, to realize the direct solution of reflection coefficient with low-frequency : Xiaotao Wen, Jixin Yang, Leihao Li, Jian He, Bo Li.

Advanced Remote Sensing is an application-based reference that provides a single source of mathematical concepts necessary for remote sensing data gathering and assimilation. It presents state-of-the-art techniques for estimating land surface variables from a variety of data types, including optical sensors such as RADAR and LIDAR.

curve, which plays a fundamental role in our inversion methodology. Examples for linear inversion include 2D cross–well tomography, 2D induced polarization (IP), and the 3D gravity problem. The more common, nonlinear inverse problem, is treated in Section 3 and the 2D DC resistivity problem is used as a prototypical example.

The. Buy Optimizing voltage gain, thermal noise, and settling time of CMOS operational amplifiers by using moderate inversion. on FREE SHIPPING on qualified orders. Stochastic optimization is key to efficient inversion in PDE-constrained optimization.

Using 'simultaneous shots', or random superposition of source terms, works very well in simple acquisition. A user-driven feedback approach for 2D direct current resistivity inversion based on particle swarm optimization. Impedance inversion by using the low-frequency full-waveform inversion result as an a priori model.

Sanyi Yuan Velocity inversion by global optimization using finite-offset common-reflection-surface stacking applied to. The ADMM optimization that is used to solve equa- tions 14 and 19 is reviewed in Appendix B.

W e also refer the reader to Goldstein and Osher (), Boyd et al.

Description Optimization of frequencies used in direct sensing by inversion PDF

Inversion 1: Single profile, three frequencies The configuration of the first synthetic imaging study, referred to as Inversion 1, is shown in Fig. A single profile with seven inline horizontal electric dipole transmitters runs across the target's centre, where each source has a length of m and is located at z = 0 by: We explore the use of stochastic optimization methods for seismic waveform inversion.

The basic principle of such methods is to randomly draw a batch of realizations of a given misfit function and goes back to the s. The ultimate goal of such an approach is to dramatically reduce the computational cost involved in evaluating the by: Abstract: Time-frequency analysis can reveal local variations and allow for separation of phase and amplitude information of nonstationary seismic waveforms.

Seismic signals are used since long as a robust tool for inversion of underground structures, as has been the practice in geophysical : Yong Hu, Ru-Shan Wu, Li-Guo Han, Pan Zhang.

Details Optimization of frequencies used in direct sensing by inversion FB2

Dong, Q., and C. Rappaport (), Microwave subsurface imaging using direct finite-difference frequency-domain-based inversion, IEEE Transactions on Geoscience and Remote Sensing, 47 (11). Wait, J. (), Electromagnetic Waves in Statified Media, Pergamon Press.

An inverse problem in science is the process of calculating from a set of observations the causal factors that produced them: for example, calculating an image in X-ray computed tomography, source reconstruction in acoustics, or calculating the density of the Earth from measurements of its gravity is called an inverse problem because it starts with the effects and then calculates the.

3D sequential inversion of frequency-domain airborne electromagnetic data to determine conductive and magnetic heterogeneities. Building an automated numerical optimization algorithm.

Coupling direct inversion to common-shot image-domain velocity analysis. 2. Advanced Instruments in Remote Sensing of EBC. Based on the current status of remote sensing instruments, their existing applications in the literature, and future potential contributions to EBC, the aforementioned five types of instruments: high spatial resolution, hyperspectral, thermal infrared, small-satellite constellation, and LIDAR sensors, were by: Exploration geophysics is an applied branch of geophysics and economic geology, which uses physical methods, such as seismic, gravitational, magnetic, electrical and electromagnetic at the surface of the Earth to measure the physical properties of the subsurface, along with the anomalies in those properties.

It is most often used to detect or infer the presence and position of economically. Flight control design for rotorcraft is challenging due to high-order dynamics, cross-coupling effects, and inherent instability of the flight dynamics.

Dynamic inversion design offers a desirable solution to rotorcraft flight control as it effectively decouples the plant model and effectively handles non-linearity.

However, the method has limitations for rotorcraft due to the requirement for Cited by: 2. MATLAB-based Finite Difierence Frequency Domain Modeling and Its Inversion for Subsurface Sensing A Dissertation Presented by Qiuzhao Dong to The Department of Electrical and Computer Engineering in partial fulflllment of the requirements for the degree of Doctor of Philosophy in Electrical Engineering in the fleld of Fields, Waves and Optics.

Therefore, the ℓ1-norm is commonly used. The optimization problem based on the ℓ1-norm is recast as follows [12],[13]: 1 min subject toX y AX==.

(9) In the sequel, some of the commonly used algorithms for sparse reconstruction are described. Convex Cited by:   Linearized 3-D Electromagnetic Contrast Source Inversion and Its Applications to Half-Space Configurations Abstract: One of the main computational drawbacks in the application of 3-D iterative inversion techniques is the requirement of solving the Cited by: 9.

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A Strategy for Active Remote Sensing Amid Increased Demand for Spectrum describes the threats, both current and future, to the effective use of the electromagnetic spectrum required for active remote sensing.

This report offers specific recommendations for protecting and making effective use of the spectrum required for active remote sensing.Fast inversion with CS and AMP. As the simulation cost in solving wave equations is proportional to the number of monochromatic source experiments, we reduce the simulation cost by forming fewer randomized simultaneous sources and selecting a random subset of frequencies during the inversion .In this paper, compressed sensing (CS) is used to compensate for the k-space regions where direct filter inversion is unstable.

A significantly lower level of streaking artifacts is produced in the resulting susceptibility maps for both simulated and in vivo data sets compared to outcomes obtained using the direct threshold by: