01643nam 2200409Ka 450 991069663690332120080612104658.0(CKB)5470000002380494(OCoLC)231749787(EXLCZ)99547000000238049420080612d2006 ua 0engtxtrdacontentcrdamediacrrdacarrierLow wind speed technology phase II[electronic resource] offshore floating wind turbine concepts : fully coupled dynamic response simulations /produced for the U.S. Department of Energy by the National Renewable Energy Laboratory[Washington, D.C.] :U.S. Dept. of Energy, Energy Efficiency and Renewable Energy,[2006]1 sheet digital, PDF fileWind energy program technology portfolioTitle from caption (viewed June 12, 2008)."March 2006.""DOE/GO-102006-2206."Low wind speed technology phase II Wind turbinesComputer simulationWindsSpeedMeasurementOffshore electric power plantsResearchWind turbinesComputer simulation.WindsSpeedMeasurement.Offshore electric power plantsResearch.National Renewable Energy Laboratory (U.S.)United States.Department of Energy.Office of Energy Efficiency and Renewable Energy.GPOGPOBOOK9910696636903321Low wind speed technology phase II3437672UNINA04117nam 22006251a 450 991100664100332120200520144314.01-281-05750-997866110575030-08-052712-4(CKB)1000000000357557(EBL)311303(OCoLC)190795116(SSID)ssj0000071421(PQKBManifestationID)11109866(PQKBTitleCode)TC0000071421(PQKBWorkID)10089867(PQKB)10786993(MiAaPQ)EBC311303(EXLCZ)99100000000035755720080303d1998 my 0engur|n|---|||||txtccrAnalysis of geophysical potential fields a digital signal processing approach /Prabhakar S. Naidu and M. P. MathewNew York Elsevier19981 online resource (311 p.)Advances in exploration geophysics ;v. 5Description based upon print version of record.0-444-82801-X Includes bibliographical references and index.Front Cover; Analysis of Geophysical Potential Fields: A Digital Signal Processing Approach; Copyright Page; Contents; Preface; Chapter 1. Geophysical Potential Fields; 1.1. Potential field surveys for mineral and hydrocarbon exploration; 1.2. Role of digital signal processing (dsp); 1.3. A comparison with seismic signal processing; 1.4. Prologue; 1.5. Notation; References; Chapter 2. Potential Field Signals and Models; 2.1. Potential field in source free space; 2.2. Potential field in source filled space; 2.3. 2D source models; 2.4. 3D source models2.5. Stochastic models I: random interface2.6. Stochastic model II: random medium; References; Chapter 3. Power Spectrum and its Applications; 3.1. Introduction; 3.2. Spectrum of random fields; 3.3. Discrete potential fields; 3.4. Estimation of power spectrum; 3.5. Depth estimation from radial spectrum; 3.6. Angular spectrum; 3.7. Coherence analysis; References; Chapter 4. Digital Filtering of Maps I; 4.1. Two-dimensional digital filters; 4.2. Implementation of digital filters; 4.3. Filtering for signal enhancement; 4.4. Digital filters for analytical operations4.5. Reduction to pole and equator4.6. Reduction to a plane surface; 4.7. Removal of the terrain effect; 4.8. Wiener filters; References; Chapter 5. Digital Filtering of Maps II; 5.1. Inverse filtering; 5.2. Least squares inversion (2D distribution); 5.3. Least squares inversion (3D distribution); 5.4. Texture analysis; References; Chapter 6. Parameter Estimation; 6.1. Maximum likelihood (ML) estimation; 6.2. ML estimation source parameters; 6.3. Least squares inverse (non-linear); References; Subject indexWhen some useful information is hidden behind a mass of unwanted information we often resort to information processing used in its broad sense or specifically to signal processing when the useful information is a waveform. In geophysical surveys, in particular in aeromagnetic and gravity surveys, from the measured field it is often difficult to say much about any one specific target unless it is close to the surface and well isolated from the rest. The digital signal processing approach would enable us to bring out the underlying model of the source, that is, the geological structure. Some of Advances in exploration geophysics ;5.ProspectingGeophysical methodsMathematicsSignal processingDigital techniquesProspectingGeophysical methodsMathematics.Signal processingDigital techniques.551622.15622/.15 21622.15Naidu Prabhakar S461078Mathew M. P1822428MiAaPQMiAaPQMiAaPQBOOK9911006641003321Analysis of geophysical potential fields4388636UNINA