1 edition of **Analysis of Ocean Wave Fields Using the Harmonic Phase Tracking Parameter Estimation Technique** found in the catalog.

Analysis of Ocean Wave Fields Using the Harmonic Phase Tracking Parameter Estimation Technique

- 316 Want to read
- 30 Currently reading

Published
**1997** by Storming Media .

Written in English

- SCI052000

The Physical Object | |
---|---|

Format | Spiral-bound |

ID Numbers | |

Open Library | OL11852318M |

ISBN 10 | 1423580826 |

ISBN 10 | 9781423580829 |

stituents according to harmonic analysis. With the development of digital computers the least-squares technique is used to evaluate the tidal constituents from observed data and this is a prin-cipal method used today. The harmonic method of tidal analysis has been further refined for improve-ment in accuracy of tidal prediction. A method for. Tidal Analysis. For tidal harmonic analysis of sea level data, there are various packages which may be available free of charge: The National Oceanography Centre (NOC) has developed TASK (Tidal Analysis Software Kit). This is a suite of programs that includes harmonic analysis, tidal prediction, formatted tide table production, data. Therefore, group velocity is a valuable parameter (in addition to wave period and phase velocity) to characterize the gravity wave. And a method called phase- and group-velocity tracing was developed (Kuo et al., ) to analyze the phase- and group-velocities of any kind of wave propa-gation. The technique of velocity tracing was applied to. The new velocity estimation techniques, involving complete wavefields and not rays, are more consistent with WEM than ray-based tomography is. The combined use of improved imaging and wave-equation velocity analysis therefore promises a more complete and consistent approach to depth imaging, and will hopefully prove its value in the near future.

The parameter k(wj) is the wavenumber, which describes the change in phase as the wave propagates along the borehole, and is related to the phase velocity via: (3) Because the wave is recorded by receivers which only exist at discrete points, the expression for the wave in Eq. 1 must modified by replacing z with (n - 1)6.z for.

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Analysis of Ocean Wave Fields Using the Harmonic Phase Tracking Parameter Estimation Technique [P. Palo] on *FREE* shipping on qualifying offers. This is a NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA report procured by the Pentagon and made available for public release.

It has been reproduced in the best form. Accurate frequency tracking of harmonic signals is an essential process for analysis of musical instrument and singing sounds. For fine frequency estimation, we propose two methods for enhancement of the phase difference estimation (PDE).Author: Hee-Suk Pang, Jun-seok Lim, Soonil Kwon.

Further problems with classical harmonic analysis arise in coastal regions where the tidal response is in the form of a wave propagating onshore. In large estuaries, the seasonal change in salinity and flow may change the dynamic response but as these changes can vary from year to year the tidal process is not really by: This collection contains papers that explore major advances in wave measurement and quantification of ocean and lake waves, including technical knowledge and applications in wave theory, characteristics, design, and techniques.

Papers are national and international in scope and include practical examples and case histories. enhanced or complemented by the analysis of wave fields using the ATSIS. The conceptual basis of current conventional surface wind waves forecast and modeling was developed in the s and early s.

The central concept is the recognition of the predominance of wave energy spectrum as the overriding. Analysis of Ocean Wave Fields Using the Harmonic Phase Tracking Parameter Estimation Technique book Conventional tidal forecasting techniques are based on harmonic analysis, which is a superposition of many sinusoidal constituents with three parameters amplitudes, Phase and frequencies using the.

This paper proposes a high-speed iterative procedure for estimating the ocean wave directional spectrum Analysis of Ocean Wave Fields Using the Harmonic Phase Tracking Parameter Estimation Technique book vessel motion data. It uses as input data, the. As shown in Fig. 7a and b, the estimation precision of the 2nd harmonic amplitude and phase can be highly improved by the EOCW-based WDIpDFT method.

Download: Download full-size image; Fig. Relative errors of the 2nd harmonic parameters estimation with the fluctuation of the 2nd harmonic voltage. (a) Amplitude. (b) by: 7. Univariate harmonic estimation Harmonic estimation (HE) is used to identify periodic pat-terns in the functional part of the model.

For a given time series, the simplest structure may take into account just a trigonometric term y(t) = ak cosωkt + bksinωkt which is a sinusoidal wave with an initial phase. Therefore, the func-tional model. Spectrum estimation and harmonic analysis Abstract: In the choice of an estimator for the spectrum of a stationary time series from a finite sample of the process, the problems of bias control and consistency, or "smoothing," are dominant.

In this paper we present a new method based on a "local" eigenexpansion to estimate the spectrum in terms. wave forecasts. Recent advances in remote sensing techniques allow for measurement of the ocean wave fields using marine radars in near-real time. Assimilation of real-time observations into a short-term wave forecasting model can greatly enhance the safety and efficiency of offshore operations.

Given an estimate of the present state of the sea. This paper is concerned with the parameter estimation and stabilization of a one-dimensional wave equation with harmonic disturbance suffered by boundary observation at one end and the non-collocated control at the other end.

An adaptive observer is designed in terms of measured velocity corrupted by harmonic disturbance with unknown magnitude. km/h). This limit can be increased by using other mission parameters. The results of velocity estimation are presented in Table 2, Table 2 Analysis of Ocean Wave Fields Using the Harmonic Phase Tracking Parameter Estimation Technique book Estimated velocities Real Velocity (km/h) Estimated velocity (km/h) 1 2 3 4 5 10 13 From the analysis of Table 2 we can see that that theFile Size: KB.

Nonlinear Ocean Waves and the Inverse Scattering Transform presents the development of the nonlinear Fourier analysis of measured space and time series, which can be found in a wide variety of physical settings including surface water waves, internal waves, and equatorial Rossby waves.

This revolutionary development will allow hyperfast Cited by: 1 Estimation-Based Ocean Flow Field Reconstruction Using Proﬁling Floats Huazhen Fang, Raymond A. de Callafon and Jorge Cortes´ Abstract This note considers ocean ﬂow ﬁeld monitoring using proﬁling ﬂoats and investigates a foundational estimation.

(for both accuracy and algorithm speed) using linear and non-linear approaches. A hybrid inversion method that combines horizontal wavenumber estimation with non-linear optimization methods, where the wavenumber estimates would be used to determine spatially dependent background models for the non-linear parameter search algorithms is being tested.

The purpose of the Acoustical Society of America is to generate, disseminate, and promote the knowledge and practical applications of acoustics. Established inthe present membership includes leaders in acoustics worldwide. Diverse fields of interest in acoustics include physics, engineering, architecture, noise, oceanography, biology.

long-term ocean data can be made available for building climatological data to be used in the design stage. The evaluation of a vessel’s performance requires input of the sea-state parameters, so onboard wave estimation is highly relevant for any type of monitoring and/or decision support system on Size: 1MB.

This contribution is seen as a first attempt to extract the tidal frequencies using a multivariate spectral analysis method applied to multiple time series of tide-gauge records.

The existing methods are either physics-based in which the ephemeris of Moon, Sun and other planets are used, or are observation-based in which univariate analysis methods—Fourier and wavelet Cited by: • All time-harmonic fields (not just plane waves) can be written in the form: E(r) rr E() ()r t [E rr ejωt] rr r, =Re For the E-field of a plane wave we had Complex Notation Now generalize to all time-harmonic fields: • Given a vector phasor for a time-harmonic field, one can find the actual time-dependent field as follows:File Size: 59KB.

the general problem of wave phase speed estimation and its equivalent wavenumber estimation problem, and we derive an inverse model for estimating spatially varying wavenumbers.

In Section III, we evaluate the skill of the newly developed method using both synthetic and real-world data sets applied to both 1- and 2-D spatial domains.

analysis provides a method to examine the energy level of a range of wave periods. Using spectral analysis it is therefore possible to determine the period of the waves with the most energy. This statistic, known as T P1, provides a more representative wave period for ocean waves than the zero crossing analysis.

WAVE DIRECTIONFile Size: KB. parameters, so onboard wave estimation is highly relevant for any type of monitoring and/or decision support system on ships.

In the literature there are studies(2,3,4,5,6) concerning the estimation of sea state parameters using measured ship responses (e.g. motion data) where the ship, to make an analogy, acts as a wave rider buoy and for. ment of an MEM procedure for the analysis of direc- tional wave fields using a wave probe array.

The MEM has it's origins in probability theory 4 and has also been succesfully used in spectral analysis. 2 The spectral analysis approach is, however, based.

Abstract. Three years of TOPEX/POSEIDON altimeter data have been processed at Delft Institute for Earth-Oriented Space Research (DEOS) to solve the major diurnal and semi-diurnal constituents of the global ocean tide using the two classical methods of tidal analysis, i.e.

the harmonic and response analyses. Some experiments with the parameters in the response Cited by: Estimation of wave phase speed and nearshore bathymetry from video imagery Hilary F. Stockdon 1 and Rob A.

Holman College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis Abstract. A new remote sensing technique based on video image processing has been developed for the estimation of nearshore by: likelihood estimation, and comment on the relative computa-tional efﬁciency of each method.

In Sec. III we generalize the static estimation method to a dynamic estimation method that is able to track arbitrary time-dependent parameters. Setting a desired estimation precision then speciﬁes the time resolution for the tracking of drift. Osada, Y, Fujimoto H, Miura S, Sweeney A, Kanazawa T, Nakao S, Sakai SI, Hildebrand JA, Chadwell CD.

Estimation and correction for the effect of sound velocity variation on GPS/Acoustic seafloor positioning: An experiment off.

Manual of harmonic analysis and prediction of tides. This book was designed primarily as a working manual for use in the United States Coast and Geodetic Survey and describes the procedure used in this office for the harmonic analysis and prediction of tides and tidal currents.

The phase velocity of the A 0 (a) and the S 0 (b) modes of the Lamb waves measured at different distances: 1ces: are 6 are the numbers of zerothe numbers of zero--crossing point in signal used in the crossing point in signal used in the delay time estimationdelay time estimation.

Shear Wave Splitting Parameter Estimation Using a Regular Distribution of Azimuths A. Stanton, University of Alberta, Edmonton, Canada [email protected] and M. Sacchi, University of Alberta, Edmonton, Canada Summary Analysis of shear wave splitting involves measuring the variability of data as a function of azimuth.

Explorations in Harmonic Analysis with Applications to Complex Function Theory and the Heisenberg Group Harmonic analysis is a venerable part of modern mathematics.

Its roots be-gan, perhaps, with late eighteenth-century discussions of the wave equation. Using the method of separation of variables, it was realized that the equation. Estimation and prediction of wave input and system states based on local hydropressure and machinery response In collaboration with CorPower Ocean AB Supervisor at KTH: Xiaoming Hu Examiner: Xiaoming Hu.

Wave component i's phase Wave component i's angular speed. Analysis: Moon River is a decades old song that has became a classic because of its music that is pleasant to the ears and its short but meaningful lyrics. The song’s message is that of being not just a dreamer but chasing and acting towards the realization of that dream.

Also, it tackles about the role friends take in this quest. texture analysis[15]. But computations of their kernels involve a number of factorial terms and suffer from numerical instability.

However, Polar Harmonic Transforms (PHTs) have no numerical instability. In this paper, a set of transforms, called Polar Harmonic Transforms (PHTs) are introduced. These transforms can be. Department of Earth, Ocean and Atmospheric Sciences.

Faculty of Science. – Main Mall. In ocean wave data analysis this may occur as a hurricane approaches a selected location. The wave spectrum is changing so rapidly that the customary Fourier methods are inadequate for the analysis. The same occurs in other fields, including communications and.

The flow patterns of the phase-averaged fields are relatively smooth. Because the averaged flow does not show any strongly nonlinear effects, the quasi-linear approximation can be used. The parameters obtained by the flow averaging are compared with the theoretical results obtained within the theoretical quasi-linear model of a turbulent Cited by: Maxwell’s Laws in Time-Harmonic Form To go to sinusoidal steady state, we assume a time variation of cos!t.

Phasor notation is a very convenient way to work with sinusoidal waveforms. Recall that the deﬁnition of a phasor is v(t) = Re n Ve~ j!t o () where the phasor V~ is a complex number. What we want to do is to express the File Size: 97KB. Reviewer: Masoud - favorite favorite favorite favorite favorite - Ma Subject: tidal harmonis analysis tide analysis, harmonic 9, ViewsPages:.

Laser wave slope meter data pdf the surface wake of the Pdf. Navy tug, USS Quapaw, is analyzed using a method based upon the local Fourier transform (LFT).

Three cases at ship speeds of, and m/s. are analyzed (JOWIP 8–2, 9–2, and 9–3). The results are compared with a simple kinematical surface wake by: 48 where Cheng and Cheng A(w)e-(w)zei(¢(w)+k(w)z)w = angular frequency k = wavenumber of the propagating mode z download pdf distance between source and receiver.

A(w) = amplitude of the incident wave at the first receiver ¢(w) = phase of the incident wave at the first receiver a(w) = attenuation coefficient of the propagating mode (1) In this way, we can find the A(w), k(w), and .Nonlinear Wave Interaction and Its Applications to ebook Analysis of Steep Ocean Waves Ebook ocean wave field consists of free (or linear) and bound waves.

The DHWM thus includes three major steps: wave direction estimation, initial phase computation, and subtraction of the bound-wave effects from the measurements.

To achieve relatively fine Cited by: 1.