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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.
1

Predicting cost and schedule growth for military and civil space systems

Rusnock, Christina F. January 1900 (has links)
Thesis (M.S.)--Air Force Institute of Technology, 2008. / Title from title screen (viewed Nov. 18, 2008). "March 2008." "AFIT/GRD/ENC/08M-01." "ADA482546"--URL. Includes bibliographical references (p. 126-132). Also issued in paper format.
2

Multidisciplinary design optimization of an extreme aspect ratio HALE UAV a thesis /

Morrisey, Bryan J. McDonald, Robert Alan. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Title from PDF title page; viewed on September 22, 2009. Major professor: Robert A. McDonald, Ph.D. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Aerospace Engineering." "June 2009." Includes bibliographical references (p. 127-129). Also available on microfiche.
3

SPACE-BASED VISIBLE (SBV) SURVEILLANCE DATA VERIFICATION AND TELEMETRY PROCESSING

Stokes, Grant H., Viggh, Herbert E.M., Pollock, J. Kent 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / This paper discusses the telemetry processing and data verification performed by the SBV Processing, Operations and Control Center (SPOCC) located at MIT Lincoln Laboratory (MIT LL). The SPOCC is unique among the Midcourse Space Experiment (MSX) Data Processing Centers because it supports operational demonstrations of the SBV sensor for Space-Based Space Surveillance applications. The surveillance experiment objectives focus on tracking of resident space objects (RSOs), including acquisition of newly launched satellites. Since Space Surveillance operations have fundamentally short timelines, the SPOCC must be deeply involved in the mission planning for the series of observations and must receive and process the resulting data quickly. In order to achieve these objectives, the MSX Concept of Operations (CONOPS) has been developed to include the SPOCC in the operations planning process. The SPOCC is responsible for generating all MSX spacecraft command information required to execute space surveillance events using the MSX. This operating agreement and a highly automated planning system at the SPOCC allow the planning timeline objectives to be met. In addition, the Space Surveillance experiment scenarios call for active use of the 1 Mbps real-time link to transmit processed targets tracks from the SBV to the SPOCC for processing and for short time-line response of the SPOCC to process the track of the new object and produce new commands for the MSX spacecraft, or other space surveillance sensors, to re-acquire the object. To accomplish this, surveillance data processed and stored onboard the SBV is transmitted to the APL Mission Processing Center via 1 Mbps contacts with the dedicated Applied Physics Laboratory (APL) station, or via one of the AFSCN RTS locations, which forwards the telemetry in real-time to APL. The Mission Processing facility at APL automatically processes the MSX telemetry to extract the SBV allocation and forwards the data via file transfer over a dedicated fractional T1 link to the SPOCC. The data arriving at the SPOCC is automatically identified and processed to yield calibrated metric observations of RSOs. These results are then fed forward into the mission planning process for follow-up observations. In addition to the experiment support discussed above, the SPOCC monitors and stores SBV housekeeping data, monitors payload health and status, and supports diagnosis and correction. There are also software tools which support the assessment of the results of surveillance experiments and to produce a number of products used by the SBV instrument team to assess the overall performance characteristics of the SBV instrument.
4

Nonlinear Transformations and Filtering Theory for Space Operations

Weisman, Ryan Michael 1984- 14 March 2013 (has links)
Decisions for asset allocation and protection are predicated upon accurate knowledge of the current operating environment as well as correctly characterizing the evolution of the environment over time. The desired kinematic and kinetic states of objects in question cannot be measured directly in most cases and instead are inferred or estimated from available measurements using a filtering process. Often, nonlinear transformations between the measurement domain and desired state domain distort the state domain probability density function yielding a form which does not necessarily resemble the form assumed in the filtering algorithm. The distortion effect must be understood in greater detail and appropriately accounted for so that even if sensors, state estimation algorithms, and state propagation algorithms operate in different domains, they can all be effectively utilized without any information loss due to domain transformations. This research presents an analytical investigation into understanding how non-linear transformations of stochastic, but characterizable, processes affect state and uncertainty estimation with direct application to space object surveillance and space- craft attitude determination. Analysis is performed with attention to construction of the state domain probability density function since state uncertainty and correlation are derived from the statistical moments of the probability density function. Analytical characterization of the effect nonlinear transformations impart on the structure of state probability density functions has direct application to conventional non- linear filtering and propagation algorithms in three areas: (1) understanding how smoothing algorithms used to estimate indirectly observed states impact state uncertainty, (2) justification or refutation of assumed state uncertainty distribution for more realistic uncertainty quantification, and (3) analytic automation of initial state estimate and covariance in lieu of user tuning. A nonlinear filtering algorithm based upon Bayes’ Theorem is presented to ac- count for the impact nonlinear domain transformations impart on probability density functions during the measurement update and propagation phases. The algorithm is able to accommodate different combinations of sensors for state estimation which can also be used to hypothesize system parameters or unknown states from available measurements because information is able to appropriately accounted for.
5

Toward a national space warfighting architecture forging a framework for debate about space-based operational and tactical combat support /

Work, Robert O. January 1990 (has links) (PDF)
Thesis (M.S. in Systems Technology (Space Systems Operations)--Naval Postgraduate School, September 1990. / Thesis Advisor(s): Jones, Carl R. Second Reader: Boger, Dan C. "September 1990." Description based on title screen as viewed on December 17, 2009. DTIC Identifier(s): Combat Support, Space Based, Space Warfare, Ground Based, NSWA(National Space Warfighting Architecture), Architecture, Reconnaissance, Strategic Reconnaissance, Space Surveillance, Warfighting Capabilities, Tactical Warfare, Naval Warfare, Space Systems, Missions, Theses. Author(s) subject terms: Space Warfare, Space-based Combat Support, Space Warfighting Architecture. Includes bibliographical references (p. 183-188). Also available in print.
6

When the Enemy Has Our Eyes

McKinley, Cynthia A. S. 23 March 1998 (has links)
Thesis (M.M.A.S.)--School of Advanced Airpower Studies, 1995. / Subject: The role of overhead imagery in modern conflict and how to deny that capability to our adversaries. Cover page date: [1995]. Vita. Includes bibliographical references.
7

Can commercial satellite data aid in the detection of covert nuclear weapons programs?

Lance, Jay Logan January 1993 (has links)
This research was conducted to determine the effectiveness of using commercial satellite data to detect covert nuclear weapons programs. Seven-band Landsat Thematic Mapper data covering the Pahute Mesa (an area within the United States Nevada Nuclear Testing Site), acquired on October 16, 1985, were analyzed to determine if underground nuclear test sites were spectrally distinguishable from the surrounding area. The analysis consisted of four steps: (1) analyzing the raw data, (2) manipulating the raw data through contrast stretching, filter application, matrix algebra, and principal components analyses, (3) identifying parameters that affect classification of underground nuclear tests and (4) selectively limiting parameters. The results of limiting parameters showed that a supervised classification of a signature created with a five-original-pixel seed of one representative, known test site provided an accurate classification of most known test sites. To further eliminate erroneous classification of roads and other areas of similar reflectance, these areas were seeded to create a second signature. This signature, whose spectral responses were different, was then used in a simultaneous classification. This classification further eliminated erroneous classification of non-test site areas, demonstrating that commercial satellite digital data can aid in the detection of covert nuclear weapons programs, in this case, underground nuclear testing. An application of the classification scheme used is proposed to confront a scenario in which a country seeks additional verification of another party's proposed violation of test ban treaties. / Department of Physics and Astronomy
8

Gendering Space: Security And Surveillance Perceptions Of Single Women In Istanbul

Tulaz, Asalet 01 December 2008 (has links) (PDF)
In today&rsquo / s cities, surveillance become a more common and internalized tool for control that spreads to everyday life with the assistance of new technologies. Numerous surveillance techniques for security reasons such as electronic surveillance on computers or phones, cameras in public and private spaces, fingerprint and eye scans at doors, investigations, credit cards, travel cards become an ordinary part of a modern individual. The study&rsquo / s point of departure is the question of whether people willingly accept being surveilled for their security or not, in Turkey context. The main argument however is the relation between surveillance-security phenomena and women. It is aimed to question how space, security and surveillance are gendered, whether surveillance increases women&rsquo / s security or not and whether women perceive surveillance as a beneficial tool for their everyday life security. The awareness of women on surveillance techniques, the scale of surveillance, the purpose of it and the relation of it with power mechanisms are also other debated issues. The argument is developed on security and surveillance perceptions of single living and employed women in Istanbul. The consequences of surveillance on public space, the cities in neo-liberal era and the policies that magnify fear and threat and as a result, the inescapable potential of surveillance and spatial segregation are also other subjects matter.
9

Centralized control of space the use of space forces by a joint force commander /

Kelly, Ricky B. January 1900 (has links)
Thesis--School of Advanced Airpower Studies, Maxwell Air Force Base, Ala., 1992-93. / Title from title screen (viewed Oct. 28, 2003). "28 June 1993." Includes bibliographical references.
10

Detecting and measuring temporal phenomenon with high resolution satellite imagery /

Hittner, Andrew J. January 2003 (has links) (PDF)
Thesis (M.S. in Space Systems Operations)--Naval Postgraduate School, September 2003. / Thesis advisor(s): Richard Olsen, Richard Harkins. Includes bibliographical references (p. 43). Also available online.

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