Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 332 for “"Global Positioning System"”.
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SH-3 helicopter/global positioning system integration analysis
The Global Positioning System (GPS) , the transmitted navigational signal, and the overall acquisition approach are explained. Navigational receiver components are functionally described and the hierarchy of platform integration and capability is discussed. Specifically explored is the integration …
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Interferometric attitude determination using the global positioning system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1981.
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Sensing atmospheric water vapour using the global positioning system
… waves is the principal observable in the Global Positioning System (GPS). Accurate estimates of the delays experienced by the radio signals travelling from the satellites to ground-based receivers are made during the post-processing of GPS observations. In combination with meteorological …
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Global positioning system measurement of crustal deformation in central California
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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CMOS VLSI implementation of the Quick Look Global Positioning System
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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Atomic Clock Augmentation For Receivers Using the Global Positioning System
For receivers using the Global Positioning System (GPS), it is standard procedure to treat the receiver clock bias from GPS time as an unknown. This requires four range measurements to the satellites in order to solve for three dimensional position and clock offset. If the receiver clock could be …
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Canopy, terrain, and distance effects on Global Positioning System position accuracy
… to determine the realizable accuracies of the Global Positioning System for natural resource conditions. The effects of terrain, forest canopy, number of consecutive position fixes, and PDOP on accuracy were evaluated. Position accuracies were determined for a total of 27 sites: three replicate …
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Three-Dimensional Tomographic Imaging of the Ionosphere Using Global Positioning System Measurements
The experimental aspect explores the localized 3D imaging of quiet midlatitude conditions and of two classes of structures: equatorial-originating ionospheric depletions and mesoscale traveling ionospheric disturbances (MS-TIDs). A time-series of reconstructed images unravels the evolution and …
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Global Positioning System navigation and digital communications for cooperating Unmanned Air Vehicles
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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Computationally efficient modelling for long term prediction of global positioning system orbits.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Global Positioning System in Curved Space-Time and Other Applications of General Relativity
… to account for relativistic effects in the Global Positioning System. Then, a couple of applications of astrophysical interest are worked out. These are the study of the gravitational collapse of stars and the dynamical evolution of a three-dimensional Einstein-Klein-Gordon field.
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Analysis of atmospheric delays and asymmetric positioning errors in the global positioning system
Abstract Errors in modeling atmospheric delays are one of the limiting factors in the accuracy of GPS position determination. In regions with uneven topography, atmospheric delay phenomena can be especially complicated. Current delay models used in analyzing GPS data from the Plate Boundary …
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Collaborative Localization Enhancement to the Global Positioning System using Inter-Receiver Range Measurements
… services. GPS is the dominant position location system in operation, with 31 operational satellites producing eight line of sight satellites available to users at all times making it very favorable for system implementation in all wireless networks. Unfortunately when a GPS receiver is in a …
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A study of the plasmaspheric electron content using satellites of the global positioning system
… total electron content (ThC). At present, the global positioning system of satellites (UPS) potentially offers the most available opportunity for measuring variations in plasmaspheric TEC. An intrinsic problem with the GPS method is that satellites are neither low-orbiting nor geosynchronous, …
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Mitigation of multipath signals in global positioning system receivers using interval and genetic optimization
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Phase multipath estimation for global positioning system (GPS) using signal-to-noise-ratio (SNR) data
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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Extended Kalman filter for integrating tracking data from ground-based radar and airborne global positioning system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Optimal Kalman Filter Integration of a Global Positioning System Receiver and an LN-94 Inertial Navigation System
… a Kalman filter integration of a Phase III Global Positioning System (GPS) five-channel receiver and an LN-94 Inertial Navigation System (INS). The GPS provides highly accurate position and velocity information in low dynamic environments. An INS provides position and velocity information …
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AMUR TIGER PREDATION AND ENERGETIC REQUIREMENTS IN THE RUSSIAN FAR EAST: NEW INSIGHTS FROM GLOBAL POSITIONING SYSTEM COLLARS
… for any tiger population. We deployed Global Positioning System (GPS) collars on Amur tigers to study annual kill rates and energetic requirements in the Russian Far East. We captured and radio-collared 5 adult tigers from 2009 – 2011 in and around the Sikhote-Alin Biosphere Zapovednik …
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