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 32 for “"JPL"”.
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Analysis of mechanical drift error in the JPL/UCLA micromachined vibratory gyroscope
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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A spaceborne synthetic aperture radar data processor
… was supplied by the Jet Propulsion Laboratories (JPL) in California. The basic functions performed by the software include range and azimuth processing, which involve the match filtering of reference functions with the raw data. Compensation for the effects of being a spaceborne SAR were also …
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Design and Analysis of a Thermal Shield System for the Starprobe Spacecraft.
… option study by the Jet Propulsion Laboratory (JPL) of the California Institute of Technology and Ames Research Center (ARC) of the National Aeronautics and Space Administration (NASA) of an unmanned spacecraft for close-range solar observation.
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Development of a Parallel Electrostatic PIC Code for Modeling Electric Propulsion
… of the world fastest supercomputers, the NASA JPL Cosmos supercomputer ranked 37th on the TOP500 list and Virginia Tech's System X, ranked 7th. DRACO, the Virginia Tech PIC module to Coliseum, was modified with parallel algorithms to create a full parallel PIC code. A parallel solver was added …
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CubeSat Data Transmission and Storage Throughput Optimization Through the Use of a Zynq SoC Based CubeSat Science Instrument Interface Electronics Board
… Additionally, this research is funded by NASA’s JPL, with secondary motives for the creating of a space application Zynq-7000 SoC based product. Upon successful completion of the ZPS-Board, the product creates a platform for JPL to perform environmental testing in order to study the effects and …
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Polarimetric radar processing of AIRSAR imagery from Los Angeles basin region
… techniques is conducted in this study using JPL AIRSAR fully polarimetric data over a portion of the greater Los Angeles area. For this study, selection of the overall optimum polarization showed an increase of CS candidates compared to standard polarizations. In addition, polarimetric …
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System modeling, graphical user interface development, and sensors testing for the Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE)
… laboratory at NASA's Jet Propulsion Laboratory (JPL) and the Massachusetts Institute of Technology (MIT). At the same time, a model is being developed to simulate and predict the performance of MOXIE. The ability to predict the performance of MOXIE on Mars is a critical step in preparation for …
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A Process Architecture and Runtime Environment for Dependable Distributed Applications
… applications for the Jet Propulsion Laboratory (JPL). Error injection experiments validate the SIFT environment's ability to recover not only from user application errors, but also ARMOR errors as well. Finally, five other case studies illustrate how the ARMOR-based SIFT environment provides …
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Composition sensors calibration and characterization and warmup analysis for the Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE)
… by MIT and NASA's Jet Propulsion Laboratory (JPL) to demonstrate, for the first time, In-Situ Resource Utilization (ISRU) on another planet by extracting O₂ from CO₂ in the Martian atmosphere using solid oxide electrolysis (SOE). In order to inform and control its system, MOXIE has a set of …
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Computer Vision Techniques for Drill Bit Identification and Mechanical Wear Detection
… Perseverance Rover, a Jet Propulsion Laboratory (JPL) mission. The effectiveness of thresholding and segmentation on two critical tasks, drill bit identification and mechanical wear detection, is demonstrated. Then, transfer learning of convolutional neural networks (CNNs) is applied to the same …
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Ground Station Mixed-Signal PCB and SFP Ethernet-to-Optical Connector for the Deployable Optical Receiver Aperture (DORA) CubeSat
… (DORA) project at the Jet Propulsion Laboratory (JPL) in collaboration with Arizona State University (ASU) aims to demonstrate 1 Gbps data rate for crosslink communications among small spacecraft. There are numerous applications for this technology, including satellite swarms/ constellations, and …
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Positioning in geophysics : applications to GPS seismology, airborne gravimetry, and the Dawn Spacecraft at Vesta
… from that computed by the Dawn Science Team at JPL by less than 13 m. Chapter 5 describes the application of the new technique in the estimation of the orientation parameters and low-degree gravity field of Vesta. The pole orientation and low-degree gravity field estimated agree with that …
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Hollow Plume Mitigation of a High-Efficiency Multistage Plasma Thruster
… the centerline. A laboratory model, built at JPL, was run at Cal Poly to characterize this plume shape and implement a shield to restore a conical shape to the plume. A similar solution was used on a different type of thruster, a cylindrical hall thruster, at Princeton with excellent results. …
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Solution of open region electromagnetic scattering problems on hypercube multiprocessors
… performance can be obtained using the JPL Mark III hypercube and the Thinking Machine's CM2. Second, the use of the finite element method for the solution of the scattering by bodies constituted of composite materials is presented. For finite bodies situated in an unbounded space, the …
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Laboratory Characterization of Mars In-Situ Resource Utilization (ISRU) using the Mars Oxygen ISRU Experiment (MOXIE) FlatSat Testbed
… Observatory, and NASA Jet Propulsion Laboratory (JPL) developed the MOXIE FlatSat as a ground-based operational testbed to further characterize the MOXIE system, evaluate and validate planned MOXIE operations on Mars, and demonstrate potential operating modes and configurations for a …
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Characterization and Helicopter Flight Test of 3-D Imaging Flash LIDAR Technology for Safe, Autonomous, and Precise Planetary Landing
… the country into an instrument pod at NASA-JPL, integrated onto an Erickson Aircrane Helicopter at NASA-Dryden, and flight tested at the Edwards AFB Rogers dry lakebed over a field of human-made geometric hazards. Results show that the maximum operational range goal of 1000m is met and …
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Growth and optimization of quantum dots-in-a-well infrared photodetectors
… time collobarators at Jet Propulsion Laboratory (JPL) have shown that QDIP performance has surpassed that of Quantum Well Infrared Photodetector (QWIP). In this work, we will investigate various methods we implemented in improving the performance of the DWELL photodetectors. Although QDIPs based …
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Innovation Challenges in NASA’s Planetary Program and a Policy Framework for Sustainable and Equitable Space Resource Utilization
… faced by NASA’s Jet Propulsion Laboratory (JPL) and suggested changes to its enterprise architecture. The Chaotic 2.0 architecture was found to be the most flexible and a pain point analysis conducted. An implementation strategy was proposed, and future-proofing analysis conducted to outline …
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From the Earth to the Moon: A Multi-Domain Approach to Cislunar Space Domain Awareness
… populations. With this strategy, the entire JPL Cislunar Three-Body Periodic Orbit Catalog's 272,008 unique periodic orbits are explored to produce sets of Pareto optimal solutions that demonstrate the most effective combinations of periodic orbit families for maintaining SDA of Cislunar …
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Concurrent engineering for mission design in different cultures
… It was introduced with significant success by JPL/NASA and The Aerospace Corporation. Some organizations followed in using ICE and also confirmed that the design period was reduced from months to weeks. Despite the remarkable successes of the ICE application in the United States and Europe, it …
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