- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 131 to 140 of 2523 (0.093 seconds)| 131 |
The use of multiple stored views for landmark guidance in wood antsJudd, Simon P. D. January 1998 (has links)
No description available.
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| 132 |
Visually guided route navigation in the wood ant (Formica rufa)Graham, Paul January 2002 (has links)
No description available.
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| 133 |
The temporal correlation log for ship navigationHole, Simon K. January 1989 (has links)
Modem computerised navigation systems on board ships require an accurate log for optimal performance. Traditional electromechanica1logs on board merchant ships have generally been replaced by Doppler logs, which refer the velocity to the sea-bed. However, their operational depth is limited and in deep water the velocity is referred to the water-mass some depth below the hull, where it is influenced by ocean currents. The velocity accuracy ultimately depends on the estimated local sound velocity. The acoustic correlation log has acoustic beams similar to a conventional depth-sounder, with a vertically downward propagation direction and a broad beamwidth. Compared to the Doppler log it is affected less by ship pitch and roll due to its broad beamwidth, and the velocity is virtually independent of the velocity of sound and is referred to the sea-bed to a greater depth. Temporal correlation logs use a two-hydrophone array and the time delay between the two received signals is used to calculate the velocity. The full potential of these logs for world-wide ocean navigation has not been exploited. This thesis investigates the requirements and conditions for temporal correlation logs on board ships to navigate satisfactorily on and off the continental shelf. An experimental temporal correlation log working at high-frequencies with continuous wave propagation is described. It is used to measure the velocity of a tracked platform moving across a water tank and the results are compared to their theoretical values. When fully developed, the log would be suitable for shallow-water operation, and techniques learned can be applied to a low-frequency deep-water correlation log.
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| 134 |
Spacecraft precision entry navigation using an adaptive sigma point Kalman filter bank19 August 2011 (has links)
Not available
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| 135 |
Optimisation models for the generation of data cycle maps and regional surveillance/John, Maria. Unknown Date (has links)
Thesis (PhDMathematics)--University of South Australia, 2003.
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| 136 |
A study of the effects of stochastic inertial sensor errors in dead-reckoning navigationWall, John H. January 2007 (has links) (PDF)
Thesis (M.S.)--Auburn University, 2007. / Abstract. Includes bibliographic references (ℓ. 114-116)
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| 137 |
Het nieuwe binnenvaartrecht (wet van 24 juni 1939, Stbl. 201) = Le nouveau droit de navigation fluviale : (loi du 24 juin 1939, bulletin des lois no. 201) /Verhoeve, Johannes. January 1954 (has links)
Thesis (doctoral)--Rijsuniversiteit te Utrecht, 1954. / Includes indexes. Includes bibliographical references (p. 343-346).
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| 138 |
Multimediale Informationssysteme zum Vermitteln von kognitivem Navigationswissen /Schlender, Dirk. January 2008 (has links)
Zugl.: Wuppertal, Universiẗat, Habil.-Schr.
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| 139 |
Ridge regression signal processing applied to multisensor position fixingKuhl, Mark R. January 1990 (has links)
Thesis (M.S.)--Ohio University, June, 1990. / Title from PDF t.p.
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| 140 |
Dead reckoning in a desktop virtual environmentBodily, Kent D. Katz, Jeffrey S., January 2008 (has links) (PDF)
Thesis (Ph. D.)--Auburn University, 2008. / Abstract. Vita. Includes bibliographical references.
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