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 20 of 511 for “"Ground-based"”.
-
MICROWAVE BACKGROUND GROUND-BASED OBSERVATIONS
… LSPE/Strip instrument observations. It is the ground-based, low-frequency counterpart of the whole experiment LSPE (Large Scale Polarization Explorer), leads by Italian Cosmology consortium. It is a radio frequency telescope that sensitives at the microwave frequencies (43GHz and 95Ghz). It …
-
Space- and ground-based observations of pulsating aurora
… focus of this presentation is the analysis of ground- and space-based measurements of pulsating aurora (primarily THEMIS ASI array, Poker Flat ISR, and Rocket Observations of Pulsating Aurora) to provide information regarding the large-scale spatial and temporal evolution of pulsating aurora …
-
Inductive Monitoring Systems: A CubeSat Ground-Based Prototype
… health monitoring process, referred to as model-based reasoning, by automating the process of classifying healthy states and anomaly detection. An IMS prototype was designed and implemented in MATLAB. A verification analysis then determined if the IMS program could connect to a CubeSat in a …
-
VLF instrumentation for ground-based D-region studies
National Aeronautics and Space Administration Grant NsG-511
-
Phasing of Ground-based Optical Arrays for Space Applications
… a novel optical phased array architecture based on a combination of three techniques: (i) atmospheric phase is sensed using a distributed Shack-Hartmann Wavefront Sensor (SHWFS) using light reflected from the target, and corrected using a calibrated feedforward phase offset, (ii) internal …
-
Geolocation of Utility Assets Using Omnidirectional Ground-Based Photographic Imagery
A process for using ground-based photographic imagery to detect and locate power distribution assets is presented. The primary feature of the system presented here is it's very low cost compared to more traditional inspection methods because the process takes place entirely in virtual space. …
-
Ground-based transmission spectroscopy of three inflated Hot Jupiter exoplanets
… atmospheric signatures is feasible with current ground-based instrumentation. In addition, we monitored the host stars of all three objects photometrically to correct for influences of stellar activity if necessary. The obtained measurements of the three objects all favor featureless spectra. A …
-
Modeling Forest Canopy Distribution from Ground-Based Laser Scanner Data
A commercially available, tripod mounted, ground-based laser scanner was used to assess forest canopies and measure individual tree parameters. The instrument is comparable to scanning airborne light detection and ranging (lidar) technology but gathers data at higher resolution over a more limited …
-
SIMULATED GPS OBSERVATION OF TRAVELING IONOSPHERIC DISTURBANCE FROM GROUND BASED RECEIVERS
Traveling Ionospheric Disturbances (TID) can be induced by acoustic waves in
-
Long Term Ground Based Precipitation Data Analysis: Spatial and Temporal Variability
… divisions by using modeled and gauge (in-situ/ground) precipitation measurements and various climate indices. Three scientific studies were conducted as part of this research for evaluation of spatial and temporal ENSO events from modeled and gauge data using: 1) Wavelets 2) …
-
Autonomous ground-based robotic navigation for an agricultural row crop environment
… on the navigation technique for an autonomous ground-based robotic system for use in an agricultural row crop environment. The performance of the navigational system was evaluated by measuring the offset of the robot’s path to a predetermined path. It is found through a total of ten field tests …
-
Optimised ground-based near-infrared instrumentation for robotic exoplanet transit surveys
In this PhD, I have advanced the study of ground-based photometric observations in the near-infrared. Specifically, I have worked in the context of robotic exoplanet transit surveys in collaboration with the SPECULOOS Southern Observatory (SSO). Here, I targeted optimising the photometric precision …
-
Probing the atmospheres of transiting exoplanets using ground-based multi-object spectroscopy
… and correlated noise. In this thesis, I present ground-based observations of three hot Jupiters which I modelled using Gaussian processes, a technique which allows me to robustly disentangle the planetary signals from the systematic noise. In addition, I introduce Student’s-T processes for …
-
Ground-Based Hyperspectral Imaging and Data Analysis for Near-Vertical Outcrop Surfaces
… interest in hyperspectral data collected from ground-based platforms for studying near-vertical rock exposures. The purpose of this research is to use multi-modal data with an emphasis on ground-based hyperspectral imagery for spectral analysis of near-vertical outcrops complementing the …
-
Geosynchronous satellite maneuver detection and orbit recovery using ground based optical tracking
… an accurate orbit. This study uses angles only ground based optical tracking to detect maneuvers and recover orbits for geosynchronous satellites. Using the Analytical Graphics Inc. Orbit Determination Tool Kit sequential estimation software, a sequential estimation filter was "tuned" and …
-
Risk Mitigation for Low Latitude Ground-Based Augmentation System (GBAS) Precision Approach Operations
<p>The ground-based augmentation system (GBAS) is a safety-critical system consisting of the hardware and software that augments the Global Positioning System (GPS) to provide precision approach and landing capability and is one of the navigational cornerstones of the International Civil Aviation …
-
Remote measurement of ELF/VLF radio emissions by lightning and ground-based transmitters
… objectives for future work.</p><p>A brief background on the atmospheric ELF and VLF environments is given in chapter 1, including a description of the conditions that allow for excellent propagation. A brief introduction to the lightning processes, as well as classification and measurement …
Page 1 of 26