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 10 of 10 for “"cross-calibration"”.
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Reflectance-based Calibration and Validation of the Landsat Satellite Archive
… to a common reflectance scale by performing cross-calibration corrections from Landsat-8 OLI to Landsat- 1 MSS. A consistent radiance-based calibration was already performed from Landsat-8 OLI through Landsat-1 MSS using bright targets and dark targets. The MSS radiance-based calibration …
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The Impact of Radiometric Calibration Error on Earth Observation-supported Decision Making
… for satellites lacking on-board calibration (such as CubeSats), these trends can be difficult to detect and require novel methods combining cross calibration with machine learning. Given that satellite data often undergoes several levels of processing prior to use, there is a need …
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A comparative evaluation of surface runoff models and methods on small developing watersheds in Northern Virginia
… and performance. Many of the models assume that calibration will take place to improve the final results. Unfortunately, this is not the case for the majority of drainage studies. A qualitative and quantitative evaluation is made to help the engineer decide which model or method is applicable in …
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Dosimetric characterization of a miniature x-ray source for biophysics studies
… values from the Mini-X were explored. Lastly, a cross calibration curve between an optically stimulated luminescent dosimeter (nanoDots) and A-20 ionization chamber was established, with an aim to use nanoDots for a proposed future biophysical experiment. It was found that the Mini-X produced a …
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A New Method for Melt Detection on Antarctic Ice-Shelves and Scatterometer Calibration Verification
… among others. In order to verify the relative calibration of these two sensors a simple cross-calibration method is implemented based on land measurements. A first-order polynomial model for the incidence angle dependence of sigma-0 is used to account for biases in the sigma-0 measurements. …
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Depth camera calibration using depth measurements
… the depth images - and then use them for calibration. Previous work to calibrate the depth cameras involves either using a multiple camera set-up or using an extremely precise optical measurement rack to move checker-board images in the camera’s field of view. However, we want average …
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Environmental Signals in Satellite Altimeter Data
… scales. These regions are identified both for calibration purposes and because any variation in sigma0 caused by environmental events would show up clearly against the almost constant background. Having identified a number of areas where sigma0 variation is small, a first land cross calibration …
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Extreme Ultraviolet Spectroscopy of the Solar Corona
… analysis is demonstrated. A complete in-flight cross-calibration between all the CDS detectors (NIS and €115, 150-785 A), is presented here for the first time. The level of accuracy and completeness of the CHIANTI atomic database, used throughout this thesis, has allowed the identification of …
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40 Years Global Estimation of Aerosol Optical Depth Profiles Using MISR and TOMS Aerosol Products
… this study, the linear relation has been used to cross calibrate the aerosol index data at 380nm from TOMS on-board Nimbus 7 and Earth Probe to aerosol optical depth at 550nm. Data gaps exist in both the TOMS and MISR data. These data gaps were filled using appropriate interpolation algorithms. …
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The Calibration of a Fission Chamber at 14 MeV: Accelerator based Neutron Beam Detection
… was evaluated for functionality and will be cross-calibrated for neutron detection against a known fission chamber at Ohio University. The 4-MV Tandem Van De Graaff Accelerator was used to produce a neutron beam for calibration. Initial spectra show that the chamber is functioning properly …