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 16 of 16 for “"SATCOM"”.
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Architecting SatCom-Enabled Early Warning Systems in Indonesia
… when a disaster hits. Satellite communication (SatCom) offers a promising alternative not only for warning transmission, but also precursor detection from the thousands of disaster monitoring sensors deployed. It enables the placement of such sensors in remote areas, often closer to the source …
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Machine Learning and Spectrum Sensing Cognitive Radio for Satcom Interference Detection
… aspect and neglects the mitigation aspect of the SATCOM interference problem. The methods section details the design of a software defined radio test bed for the creation of training data, as well as the processing of this data to be made ready for machine learning models. Two edge-based passive …
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The Evaluation of Information Policy: A Case Study Using the SATCOM Report
… goal by developing a method for evaluating the SATCOM Report (1969). The study had three purposes: First it was to examine closely and identify clearly with the aid of content analysis, important characteristics of each of the Report's recommendations. Second, by surveying experts in the field …
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Inertially stabilized platforms for SATCOM on-the-move applications : a hybrid open/closed-loop antenna pointing strategy
… environment has led to the development of mobile SATCOM terminals. SATCOM terminals seeking to achieve high data-rate communications require inertial antenna pointing to within fractions of a degree. The base motion of the antenna platform complicates the pointing problem and must be accounted for …
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Securing Military SATCOM and FSO Networks in FCAS: A Cyber and Electronic Warfare Perspective for Next-Gen Aerospace Defense
… η οποία συνδυάζει δορυφορικές επικοινωνίες (SATCOM) και οπτικές επικοινωνίες ελεύθερου χώρου (FSO), με σκοπό τη διασφάλιση ανθεκτικής συνδεσιμότητας υψηλής χωρητικότητας για το FCAS. Πραγματοποιείται μια ολοκληρωμένη ανασκόπηση των θεμελιωδών αρχών των SATCOM και FSO – συμπεριλαμβανομένων των …
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Application of Revenue Management to Satellite Communications
… continues to grow, satellite communication (SatCom) operators are faced with the challenge of effectively managing their capacity sales. While Revenue Management (RM) techniques have been widely used in other industries such as airline, hotel, and car rental services, the application of these …
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A dynamic and robust random multiple-access scheme for communication over satellite channels with interference
SATCOM is a critical capability that is increasingly in demand among civilian and military users. The past several years have seen a dramatic increase in electronic warfare capabilities available to potential adversaries that will pose a significant threat to SATCOM systems. Additionally, the …
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Evaluating the Strategic Intent and Competitive Dynamics of China’s Satellite Communications Constellations
… rapidly evolving global satellite communication (Satcom) market. Against the backdrop of SpaceX’s Starlink dominance and intensifying geopolitical competition, China’s efforts represent not only a telecommunications infrastructure push but also a broader assertion of technological sovereignty and …
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A Novel Unit Cell Antenna for Highly Integrated Phased Arrays in the SHF Band
… low-cost radar, mobile satellite communication (SATCOM), and intelligence, surveillance, and reconnaissance (ISR). Further, PCB-based arrays readily accommodate advancements in highly integrated beamforming radio frequency integrated circuits (RFICs), multi-chip modules, and RF …
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Moxon based RFID tag reader and GPS antenna
… Based Antennas for UHF satellite communications (SATCOM). The logic was to obtain the best possible performance based on Fano-Chu limits for electrically small antenna with maximum radiating elements in a given volume. This dissertation is an extension of this configuration to cover Radio …
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A UHF Multimode Array Feed for the Westford Radio Telescope
… capable of transmit or receive on UHF radar and satcom frequencies simultaneous with reception from 2 GHz to 14 GHz. To demonstrate the capabilities of the MMAF, real-time calibration and beamforming techniques are developed, and the MMAF is used to adaptively steer the beam of the Westford …
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MIT/DRAPER Technology Development Partnership Program : systems, aerodeceleration, and structural design of a high-G, rapid response, deployable autonomous aerial surveillance vehicle
… and relays field data to the user via a Satcom or UAV signal link. This thesis covers much of the work conducted in the first year of the program. and focuses on Ballistics and aerodeceleration. Structures, and Systems Interface Design of the WASP. Although the two year timeline for the …
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Frequency scaling of rain attenuation on satellite links in the Ku/Ka-bands using OLYMPUS satellite data
… August 1990 and August 1992, V.P.I. & S.U.'s SATCOM Group performed extensive measurements of slant path attenuation using the 12, 20, and 30 GHz beacon signals (in the Ku/Ka-bands) of the European OLYMPUS experimental satellite. The experimental results are used to evaluate the usefulness of …
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Antenna systems research
… techniques, - Spacecraft Antenna Systems, - Satcom Terminal Antennas, - Transmission lines and baluns, - High Radar Cross Section Reflectors for Spaceborne Radar Calibration, - Miscellaneous Antenna Investigations. These investigations have resulted in various outcomes: in new antenna types …
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Antifragile Communications
… feasibility study of reactive jamming in a SATCOM-type scenario, and a reinforcement learning-based reactive jamming mitigation strategy, for times when an antifragile approach is not practical. Most of the jammer exploitation strategies described in this dissertation fall under the category …
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A Game Theoretic Approach to Resilient Space System Design
… low earth orbit (LEO) Satellite Communications (SATCOM) system design. The results show that perfect resilience (no drop in performance) to the modeled ground based jamming threat requires a 224\% cost increase and that additional satellites are a more cost effective means of increasing …