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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.
111

Design of the Electronics Subsystem for a High-Resolution Electro-Optical Payload Using Systems Engineering Approach

Mehmood, Nasir 30 March 2023 (has links) (PDF)
Satellite imagers, in contrast to commercial imagers, demand exceptional performance and operate under harsh conditions. The camera is an essential part of an Earth Observation Electro Optical (EO) payload that is designed in response to needs such as military demands, changes in world politics, inception of new technologies, operational requirements and experiments. As one of the key subsystems, the Imager Electronics Subsystem of a high-resolution EO payload plays very important role in the accomplishment of mission objectives and payload goals. Hence, these Electronics Subsystems require a special design approach optimised for their needs and meticulous characterizations of high-resolution space applications. This dissertation puts forward the argument that the system being studied is a subsystem of a larger system and that systems engineering principles can be applied to the subsystem design process also. The aim of this dissertation is to design the Imager Electronics Subsystem of a high-resolution Electro Optical Payload using a systems engineering approach to represent a logical integration and test flow using the space industry guidelines. The Imager Electronics Subsystem consists of group of elements forming the functional chain from the Image Sensors on the Focal Plane down to electrical interface to the Data Handling Unit and power interface of the satellite. This subsystem is responsible for collecting light in different spectral bands, converting this light to data of different spectral bands from image sensors for high-resolution imaging, performing operations for aligning, tagging and multiplexing along with incorporating internal and external interfaces.
112

Rapport entre un aspect physique et un aspect mental de l'orientation spatiale

Gauvreau, Mario January 1978 (has links)
No description available.
113

Legal framework for Japan to facilitate private space activities

Sakamoto, Saeko. January 2006 (has links)
No description available.
114

none

Han, Yueh-Chen 30 January 2008 (has links)
¡@Since the Soviet Union launched its first satellite in 1957, the progress in space technology has drastically changed mankind's modus vivendi. As when nations grew more and more dependant upon the benefits brought about by the satellite technologies, space, however, became a new strategic realm where nations sought to master; consequently, contentions for national interests over this terra incognita between major global powers have evolved into a significant international security issue. Hence, as the previous military doctrines¡Xsuch as eighteenth century land power doctrine, nineteenth century sea power doctrine, and air power doctrine of the twentieth century¡Xserving as precedents, the emerging space power doctrine will undoubtedly dominate the twenty-first century global power contenders' primary national interests as well as security concerns. ¡@Over the course of the past half century, the People's Republic of China has endeavored the developments of it indigenous space technologies, and successfully positioned itself to be the third nation to have ever launched a manned space program; this manifestation also demonstrated the growing maturity and sophistication of People's Republic's space technologies. Currently, in line with America's as well as Russia's ever-expanding budget dedicated to their respective space goals, China has thus far demonstrated its political will of not falling behind the trend. Aside from the military objectives attached to the developments of China's space programs, the socio-political gains accrued to Beijing as a result of its space programs' current and future success will ensure the Communist Party's long lasting goal of glorifying the Chinese civilization as well as elevating nation's international prestige. ¡@This present treatise inquires into firstly, the surrounding circumstances and strategic environments within which China's determination for developing its indigenous space program was fermented; secondly, the crucial role play of leaderships in Beijing in formulating the successful development of the nation's space programs. Furthermore, this paper will present an in-depth analysis of the critical elements that were imperative in China's quest to achieve its space objectives, the history behind the program, as well as its present day capabilities and geo-political implications. In sum, the research findings will demonstrate the growing and ever more significant role the space technologies are playing within the conclave of the modern day Chinese strategic making apparatus.
115

L'Agence spatiale européenne : une analyse de l'intégration régionale dans le domaine spatial.

Granier, Elisabeth M. January 1975 (has links)
No description available.
116

Legal framework for Japan to facilitate private space activities

Sakamoto, Saeko. January 2006 (has links)
This thesis explores a viable domestic legal framework for Japanese private space activities. Ideally, Japanese space legislation would govern private entities in a way that promotes commercialization while also fulfilling international obligations, doing both with an especial focus on commercial launch activities. First, I analyze current Japanese space law and space policies and continue by identifying Japan's problems in this arena. Next, I present research regarding other countries' space legislation solutions and examine how other nations' regulations do or do not solve problems similar to Japan's. Then, I assess the applicability of the foreign countries' approaches to Japan's situation. Finally, I propose ideas for a new legal structure for space activities in Japan and discuss possible implementation. I do so within the context of existing space policy problems that Japan must first tackle in order to successfully develop and enforce such new laws in the future.
117

A method for the validation of space debris models and for the analysis and planning of radar and optical surveys /

Krag, Holger. January 2003 (has links) (PDF)
Techn. Univ., Diss.--Braunschweig, 2003.
118

An efficient algorithm for computing the low-thrust escape trajectory /

Gall, John A. January 2004 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 59-61). Also available on the Internet.
119

An efficient algorithm for computing the low-thrust escape trajectory

Gall, John A. January 2004 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 59-61). Also available on the Internet.
120

Spacecraft formation flying : dynamics and control /

Lin, Hua. January 2008 (has links)
Thesis (M.Sc.)--York University, 2008. Graduate Programme in Earth and Space Science. / Typescript. Includes bibliographical references (leaves 92-97). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR51555

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