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  • About
  • 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.
51

Conflict of interests : the ideas, interests and institutions involved in the development of Canadian satellite policy from 1960-1980

Marston, Wendy January 1991 (has links)
This thesis looks at the development of Canadian satellite policy between 1960 and 1980 through a study of the policy decisions relating to Telesat Canada, its specific corporate structure, and mandates and ownership patterns. The analysis draws upon a modified "interplay" model, which examines public policy as an amalgam of interacting ideas, interests and institutions. On the basis of available documents, supplemented by interviews, and supporting secondary analyses, the sometimes contradictory decisions made by the DOC and the CRTC with regards to Telesat's Agreement with the Trans Canada Telephone system during this period are argued to reflect a policy process driven by the interplay of competing views of Telesat's primary purpose and, by extension, competing visions of what constitutes the public interest.
52

Optimal scheduling for satellite refueling in circular orbits

Shen, Haijun 05 1900 (has links)
No description available.
53

A collaborative optimization approach to improve the design and deployment of satellite constellations

Budianto, Irene Arianti 12 1900 (has links)
No description available.
54

An investigation of the fine-pointing control system of a soft-gimbaled orbiting telescope /

Morrell, Frederick R. January 1970 (has links) (PDF)
Thesis (M.S. in Electrical Engineering)--University of Virginia, March 1968. / "June 1970." Submitted in partial fulfillment of the requirements for the degree Master of Electrical Engineering, University of Virginia, Charlottesville, Virginia, March 1968.--Report documentation page. "NASA TN D-5829." "L-6988." Includes bibliographical references (p. 17). Also available online in PDF from NASA Technical Reports Server Web site.
55

Satellite orbit determination using GPS carrier phase in pure kinematic mode /

Byun, Sung Hun, January 1998 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 226-231). Available also in a digital version from Dissertation Abstracts.
56

A numerical study of equivalence in scanning thermistor bolometer radiometers for earth radiation budget applications /

Haeffelin, Martial, January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 85-88). Also available via the Internet.
57

Command generation for tethered satellite systems

Robertson, Michael James, January 2004 (has links)
Thesis (Ph.D.)--School of Mechanical Engineering, Georgia Institute of Technology, 2005. / Singhose, William, Committee Chair ; Banerjee, Arun, Committee Member ; Chen, Ye-Hwa, Committee Member ; Ebert-Uphoff, Imme, Committee Member ; Olds, John, Committee Member. Includes bibliographical references.
58

Determination of cloud boundaries using satellite digital infrared data

Hankins, Russell Albert. January 1967 (has links)
Thesis (M.S.)--University of Wisconsin, 1967. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaf 39).
59

Analysis and design of the mechanical systems onboard a microsatellite in low-earth orbit an assessment study /

Solomon, Dylan Raymond. January 2005 (has links) (PDF)
Thesis (M.S.)--Montana State University--Bozeman, 2005. / Typescript. Chairperson, Graduate Committee: David M. Klumpar. Includes bibliographical references (leaves 220-221).
60

On some aspects of dynamics, modelling, and attitude analysis of satellites

Marandi, Said Rashed January 1988 (has links)
The thesis identifies several limitations in the modelling and attitude stability analysis of two classes of spacecraft: rigid and flexible satellites. Attractive methods are proposed which promise to have far reaching consequences in spacecraft dynamics. These alternatives, developed based on techniques of differential equations, classical mechanics, and differential topology, are indicated below. (a) An Alternate Transition from the Lagrangian of a Satellite to Equations of Motion The classical procedure requires the Lagrangian to be expressed in terms of the corresponding generalized coordinates of the problem. This requirement significantly complicates the derivation of the equations of motion through an introduction of a set of librational generalized coordinates, which is strictly not a part of the dynamical system. Using the Lagrangian in the natural variables (angular velocity, direction cosines, and vibrational coordinates), one develops a procedure for derivation of equations of motion without an a priori choice of rotational generalized coordinates. For the case of a satellite with two flexible plate-type appendages, for example, the approach reduced the formulation time to one-third. (b) Synthesis and Depiction of Rotational Motion of Satellites and Robots The rotational coordinates in use for numerical prediction of orientation of a satellite are either singular or redundant. Furthermore, they lack a convenient visual interpretation. A new set of coordinates is proposed and an associated representation is developed which avoids these limitations. The procedure is applied to represent and integrate numerically the librational response of the flexible satellite mentioned in (a). (c) Resolution of Attitude Stability of Delp Satellites The development here tackles a long outstanding problem in the area of attitude stability of satellites. The resolution of this problem through normalization of the Hamiltonian leads to a better appreciation of stability associated with the class of gravity gradient structures such as the proposed Space Station. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

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