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.
Results
Showing 1 to 11 of 11 for “"High Altitude Balloon"”.
-
Model-agnostic Methodology for High-Altitude Balloon Mission Planning
High-altitude balloons (HABs) are increasingly used for atmospheric science, technology validation, Earth observation, and resilient communications. There is a need for modeling HABs in multi-domain missions, and a key challenge for incorporating them is their flight trajectory dependence on …
-
Design and Performance of a Communications System for a Low-Cost High Altitude Balloon Platform for Troposphere and Stratosphere Research
… to a degree not previously possible. Data from high altitude balloons sampling up to kHz is required to characterize turbulence to the inner-scale, or smaller, over paltitudes from 20 km to 35+ km.</p> <p>This thesis presents the development of a standard balloon bus, based on reliable COTS …
-
Design and Development of Distributed Lower Atmospheric Instrumentation Packages
… of sensor suites that can be used for high temporal and spatial resolution measurements of atmospheric parameters such as temperature, pressure, humidity, particulate counts, wind velocity and much more. This thesis presents the development of both airborne and ground based distributed …
-
Integration of Wireless Sensor Network with CubeSat Satellite System for Enhanced Agricultural Monitoring
… on a desk, a 5.09km urban roof link, and a high-altitude balloon (5.6km altitude, 12.43km slant range). Across these experiments or tests, performance degrades smoothly with Received Signal Strength Indication (RSSI) or Signal to Noise Ratio (SNR) (negative-SNR fraction 0%→15%→35%). …
-
Theoretical and experimental application of neural networks in spaceflight control systems
… testing on the Wallops Arc-Second Pointer, a high-altitude balloon-borne spaceflight system. Results show that the two new methodologies can provide improved attitude control performance over the heritage control system. The methods are also demonstrated for translational and attitude control …
-
Targets of opportunity source catalog, prioritization, scheduler and related mechanics for the EUSO-SPB2 mission, The
… Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) was developed to observe ultra high energy cosmic rays and very high energy (VHE) neutrinos from suborbital space. These earth-skimming VHE tau-neutrinos can interact with the Earth’s limb to produce tau leptons which can exit …
-
Visual Terrain Relative Navigation: Pose Estimation, Neural Fields, and Verification
… constribution to visual TRN. Firstly, due to the high altitude and high speeds of planetary TRN missions, acquiring non-simulation test data oftentimes proves difficult, and thus many datasets used to test TRN systems are from lower altitudes and speeds than what the system would actually be …
-
Advanced Prototypes of the Aerosol Limb Imager
… of state-of-the-art optical technologies on a high-altitude balloon observatory. The instrument pairs an extended range acousto-optic tunable filter with a liquid crystal polarization rotator to capture spectrally resolved polarimetric imagery of the atmospheric limb. These technologies provide …
-
Characterization and prototyping of the rotating modulator hard x-ray/gamma-ray telescope
A hard x-ray/gamma-ray telescope with high sensitivity and wide field of view would be capable of performing an all-sky census of black holes over a wide range of obscuration and accretion rates. As an example, NASA's Black Hole Finder Probe mission was designed to provide a 5-sigma flux …
-
Developing Hybrid Near-Space Technologies For Affordable Access To Suborbital Space
<p>High power rockets and high altitude balloons are two near-space technologies that could be combined in order to provide access to the mesosphere and, eventually, suborbital space. This "rockoon" technology has been used by several large budget space programs before being abandoned in favor of …
-
Radiosonde High Altitude Measurements of Radiation Levels and Cosmic Ray Events
… crew and passengers working in potentially higher radiation environments. On March 11, 2021 the balloon’s volume was gradually enlarged, and was released at 11:52:13 AM and the balloon travelled a total range of 285 km which is the longest range travelled by any balloon launched at SFA. It …