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 3180 for “"Satellite"”.
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Feasibility study of a satellite-to-satellite data relay network.
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1970
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Parameterized analysis of optical inter-satellite links for high resolution satellite communication
… Antenna arrays have been deployed in single satellite applications but arrays have not been exploited in multi-satellite constellations where increased array size enables high spatial selectivity between ground transmitters. One requirement for these array systems is sufficient fidelity in …
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Evaluating a satellite surveillance system
… which should prove useful for evaluating a satellite surveillance system. This model describes the fraction of orbits in which a long lived satellite will "see" a selected position on the earth's surface. The fraction of orbits, denoted by P, is a function of the latitude of the ground …
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Optimization of satellite constellation reconfiguration
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Habitat for a satellite town
Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1955.
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Broadband satellite constellation design & evaluation
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2001.
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A satellite signal recognition system
Geosynchronous communications satellites provide a wide variety of services. They carry wideband signals, such as television, and narrowband signals, such as business data networks. This paper describes a signal recognition system for the narrowband signals found on Ku-band satellites. Using …
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Radio Resource Management for Satellite UMTS. Dynamic scheduling algorithm for a UMTS-compatible satellite network.
… systems. The implementation of these services on satellite systems, particularly for broadcast and multicast applications to complement terrestrial services is ideal since satellite systems are capable of providing global coverage in areas not served by terrestrial telecommunication services. …
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Miniaturized Antenna for Satellite Broadband Application
… antenna is a crucial component of a high-speed satellite internet system. High directivity, broadband characteristics, and circularly polarized radiations are essential for a user antenna to maintain a reliable connection with the overhead LEO satellite constellation. For commercialization and …
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A commercial architecture for satellite imagery
… of an alternative for government-developed satellites which produce high resolution imagery. This study focuses on the concept of the U.S. government purchasing proven and successful commercial satellites with minimal non-recurring engineering costs to help augment current national systems. …
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Environmental Signals in Satellite Altimeter Data
… which demonstrates a connection between satellite radar altimeter data and and environmental activity over land surfaces. Variations in height and sigma0 data sets are both considered with the first stages being investigations into the reliability of the altimeter data over land. The …
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Modelling of satellite control thruster plumes
Deleterious effects such as surface heating and turning moments can arise as a consequence of the impingement of thruster plumes with spacecraft surfaces. Such thrusters are normally fired for attitude control. The prediction of such effects must be undertaken at the design stage of the …
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Identifying Data Centers from Satellite Imagery
… descriptors which can be utilized to describe satellite imagery. The first, the differential-magnitude and radius descriptor, describes a scene by computing the directional gradient of the scene with respect to a vector field whose solutions are circles around a pixel to be described, and then …
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Ocean Tides Modeling using Satellite Altimetry
… particularly over coastal regions. Advances in satellite radar altimetry technology enabled a globally sampled record of sea surface height (SSH) and its changes over the past two decades, particularly after the launch of TOPEX/POSEIDON satellite. This geophysical record enables numerous …
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Next generation satellite orbital control system
… software architectures for the Next Generation Satellite Orbital Control System (NG-SOCS) are developed from compiled system specifications and a review of existing technologies. From the developed architectures, the recommended architecture is selected based on real-world considerations that …
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Satellite Observations of Atmospheric Halogen Oxides
… Instruments an Bord des europäischen Forschungssatelliten ERS-2 entwickelt. Dadurch war es möglich, die zeitliche und räumliche Entwicklung des atmosphärischen BrOs und OClOs global zu bestimmen. Insbesondere gelang es zum ersten Mal, erhöhte BrO-Konzentrationen in der planetaren Grenzschicht …
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