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estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

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Nội dung chi tiết: estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa 2003M.S., University of Colorado, 2006A thesis submitted to theFaculty of the Graduate School of the University of Colorado in partial fulfillment of

the requirements for the degree ofDoctor of PhilosophyDepartment of Aerospace Engineering Sciences2013https://khothuvien.corT!This thesis entitled:Es estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

timating Ocean Currents from Automatic Identification System Based Ship Drift .Measurements writ ten by Thomas D. Jakubhas been approved for t he Depa

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

rtment of Aerospace Engineering SciencesRobert LebenWilliam EmeryWeiqing HanJack HarlanDate-------------------The final copy of this thesis has been e

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

estimatingOceanCurrentsFromAutomaticIdentificationSystemBaioned discipline.iiiJakub, Thomas D. (Ph.D, Aerospace Engineering Sciences)Estimat ing Ocean Currents from .Automatic Identification System Based Ship

Drift. Measurements Thesis directed by Prof. Robert LcbcnAbstract:Ship drift is a technique that has Iwen used over the last century and a half to es estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

timate ocean currents. Several of the shortcomings of the ship drift technique include obtaining the data from multiple ships, the time delay in getti

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

ng those ship positions to a data center for processing and the limited resolution based on the amount of time between position measurements. Those sh

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa of finer resolution and more timely estimates.in this work, a demonst ration of t he use of AIS to Compute ocean currents is performed. A correspondi

ng error and sensitivity analysis is performed to help identify under which conditions errors will be smaller. A case st udy in San Francisco Bay wit estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

h const ant. AIS message updates was compared against high frequency radar and demonstrated ocean current magnitude residuals of 19 cm/s for ship trac

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

ks in a high signal to noise environment. These ship tracks were only minutes long coni|>ared to the normally 12 to 24 hour ship tracks. The Gulf of M

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

estimatingOceanCurrentsFromAutomaticIdentificationSystemBaacy of time measurements. Ultimately, AIS measurements when combined with ship drift can provide another method of estimating ocean currents, particul

arly when other measurements techniques are not available.DedicationTo family and friends, for aJl the support, advice and time given over t he years. estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

In a specialway. Heat her and Thomas.https://khothuvien.corr!AcknowledgementsIwould like to thank iny committee for providing their time, useful insi

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

ghts and access to data that would otherwise be harder to access.I would like to thank several groups for the use of their data. Cloudview Photography

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

estimatingOceanCurrentsFromAutomaticIdentificationSystemBaded the high frequency radar data for San Francisco. 1 would like to thank ORBCOMM for providing AIS messages from their satellites for the Gulf of Me

xico. 1 would also like to thank the consortium of institutions that support the HYCOM model.1 would like to thank the numerous colleagues at work for estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

constantly asking if 1 had finished my dissertation yet. While too numerous to actually name. 1 do appreciate all the encouragement.Last, 1 would lik

estimatingOceanCurrentsFromAutomaticIdentificationSystemBa

e to thank my family. Heather and Thomas for their patience as 1 wrote andmy parents for periodic proofreading.

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

Estimating Ocean Currents from Automatic Identification System Based Ship Drift MeasurementsbyThomas D. JakubB.S., The Pennsylvania Slate University.

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