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 7 of 7 for “"Ground Sampling"”.
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Pneumatic Particulate Collection System for an Unmanned Ground Sampling Robot
… use onboard a lightweight, helicopter deployable ground robot is presented. The Unmanned Systems Laboratory at Virginia Tech is developing a ground sampling robot to be carried in the payload pod of a Yamaha RMAX unmanned aerial vehicle. The robot's ultimate objective is to collect material …
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Development of a Special Purpose End-to-End Satellite Constellation Design Methodology
… to a specific target area, and achieve better ground sampling precision over existing thermal infrared platforms for the monitoring of thermal emissions over a target area. Our special purpose framework is robust, modular, and fast, allowing it to serve as an effective reference point for any …
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A General Observational Strategy for Validation of Satellite NO₂ Retrievals using Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS)
… In order to test the effectiveness of this sampling strategy,in an inhomogeneous location, the LOTOS-EUROS high resolution (1kmx1km) chemical transport model was used to simulate profiles and vertical column densities of real measurements taken during the TROLIX'19 Field Campaign. The …
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The use of airborne laser altimetry to estimate tropical forest basal area, volume, and biomass
… is developed and tested to divorce the laser and ground data collection efforts. The procedure involves 1) the collection of airborne laser data over the area of interest; 2) the collection of ground data in areas of similar forest cover type (in most cases in the same study area, but not …
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The economic and ecological sustainability of the Amazonian timber industry
… ~12 damaged stems (≥10cm DBH). Over 30% of total ground sampling area of logged forest was cleared within felled-trees impacts alone. Finally, using RIL concession data from an 11-year time series where ~0.34 million trees were harvested, we estimated the total biomass and carbon stock of …
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Towards the Advancement of Rotating Synthetic Aperture Space Telescope Technology
… on signal to noise ratio (SNR), look angle, ground sampling distance (GSD), field of view (FOV), and image smear. These results were used to define aspects of RSA imaging maneuver concept of operations (CONOPs) to serve as reference trajectories for future control algorithm testing. Second, …
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Determining estuarine seagrass density measures from low altitude multispectral imagery flown by remotely piloted aircraft
… piloted aircraft (RPA) can operate close to the ground under precise flight control enabling repeated surveys in high detail with accurate revisit-positioning. This study evaluates a method for assessing intertidal estuarine seagrass (Zostera muelleri) presence/absence and coverage density using …