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Full-Text Articles in Engineering
Geoflood: Large-Scale Flood Inundation Mapping Based On High-Resolution Terrain Analysis, Xing Zheng, David R. Maidment, David G. Tarboton, Yan Y. Liu, Paola Passalacqua
Geoflood: Large-Scale Flood Inundation Mapping Based On High-Resolution Terrain Analysis, Xing Zheng, David R. Maidment, David G. Tarboton, Yan Y. Liu, Paola Passalacqua
Civil and Environmental Engineering Faculty Publications
Recent floods from intense storms in the southern United States and the unusually active 2017 Atlantic hurricane season have highlighted the need for real‐time flood inundation mapping using high‐resolution topography. High‐resolution topographic data derived from lidar technology reveal unprecedented topographic details and are increasingly available, providing extremely valuable information for improving inundation mapping accuracy. The enrichment of terrain details from these data sets, however, also brings challenges to the application of many classic approaches designed for lower‐resolution data. Advanced methods need to be developed to better use lidar‐derived terrain data for inundation mapping. We present a new workflow, GeoFlood, for …
Improved Registration For 3d Image Creation Using Multiple Texel Images And Incorporating Low-Cost Gps/Ins Measurements, Scott E. Budge, Xuan Xie
Improved Registration For 3d Image Creation Using Multiple Texel Images And Incorporating Low-Cost Gps/Ins Measurements, Scott E. Budge, Xuan Xie
Civil and Environmental Engineering Faculty Publications
The creation of 3D imagery is an important topic in remote sensing. Several methods have been developed to create 3D images from fused ladar and digital images, known as texel images. These methods have the advantage of using both the 3D ladar information and the 2D digital imagery directly, since texel images are fused during data acquisition. A weakness of these methods is that they are dependent on correlating feature points in the digital images. This can be dicult when image perspectives are signicantly dierent, leading to low correlation values between matching feature points. This paper presents a method to …
Range Resolution Improvement Of Eyesafe Ladar Testbed (Elt) Measurements Using Sparse Signal Deconvolution, Scott E. Budge, Jacob H. Gunther
Range Resolution Improvement Of Eyesafe Ladar Testbed (Elt) Measurements Using Sparse Signal Deconvolution, Scott E. Budge, Jacob H. Gunther
Civil and Environmental Engineering Faculty Publications
The Eyesafe Ladar Test-bed (ELT) is a experimental ladar system with the capability of digitizing return laser pulse waveforms at 2 GHz. These waveforms can then be exploited o-line in the laboratory to develop signal processing techniques for noise reduction, range resolution improvement, and range discrimination between two surfaces of similar range interrogated by a single laser pulse. This paper presents the results of experiments with new deconvolution algorithms with the hoped for gains of improving the range discrimination of the ladar system. The sparsity of ladar returns is exploited to solve the deconvolution problem in two steps. The rst …
Integration Of Remote Lidar And In-Situ Measured Data To Estimate Particulate Flux And Emission From Tillage Operations, Vladmir V. Zavyalov, Gail E. Bingham, Michael D. Wojcik, Jerry L. Hatfield, Thomas D. Wilkerson, Randy S. Martin, Christian Marchant, Kori D. Moore, Bill Bradford
Integration Of Remote Lidar And In-Situ Measured Data To Estimate Particulate Flux And Emission From Tillage Operations, Vladmir V. Zavyalov, Gail E. Bingham, Michael D. Wojcik, Jerry L. Hatfield, Thomas D. Wilkerson, Randy S. Martin, Christian Marchant, Kori D. Moore, Bill Bradford
Civil and Environmental Engineering Faculty Publications
Agriculture, through wind erosion, tillage and harvest operations, burning, diesel-powered machinery and animal production operations, is a source of particulate matter emissions. Agricultural sources vary both temporally and spatially due to daily and seasonal activities and inhomogeneous area sources. Conventional point sampling methods originally designed for regional, well mixed aerosols are challenged by the disrupted wind flow and by the small mobile source of the emission encountered in this study. Atmospheric lidar (LIght Detection And Ranging) technology provides a means to derive quantitative information of particulate spatial and temporal distribution. In situ point measurements of particulate physical and chemical properties …
Strategies For Lidar Characterization Of Particulates From Point And Area Sources, Michael D. Wojcik, Kori D. Moore, Randy S. Martin, Jerry Hatfield
Strategies For Lidar Characterization Of Particulates From Point And Area Sources, Michael D. Wojcik, Kori D. Moore, Randy S. Martin, Jerry Hatfield
Civil and Environmental Engineering Faculty Publications
Use of ground based remote sensing technologies such as scanning lidar systems (light detection and ranging) has gained traction in characterizing ambient aerosols due to some key advantages such as wide area of regard (10 km2 ), fast response time, high spatial resolution (m) and high sensitivity. Energy Dynamics Laboratory and Utah State University, in conjunction with the USDA-ARS, has developed a three-wavelength scanning lidar system called Aglite that has been successfully deployed to characterize particle motion, concentration, and size distribution at both point and diffuse area sources in agricultural and industrial settings. A suite of massbased and size distribution …
Aglite Lidar: A Portable Elastic Lidar System For Investivating Aerosol And Wind Motions At Or Around Agricultural Production Facilities, Christian C. Marchant, Thomas Wilkerson, Gail E. Bingham, Vladimir V. Zavyalov, Jan M. Andersen, Cordell B. Wright, Scott S. Cornelsen, Randy S. Martin, Philip J. Silva, Jerry L. Hatfield
Aglite Lidar: A Portable Elastic Lidar System For Investivating Aerosol And Wind Motions At Or Around Agricultural Production Facilities, Christian C. Marchant, Thomas Wilkerson, Gail E. Bingham, Vladimir V. Zavyalov, Jan M. Andersen, Cordell B. Wright, Scott S. Cornelsen, Randy S. Martin, Philip J. Silva, Jerry L. Hatfield
Civil and Environmental Engineering Faculty Publications
The Aglite Lidar is a portable scanning lidar that can be quickly deployed at agricultural and other air quality study sites. The purpose of Aglite is to map the concentration of PM10 and PM2.5 in aerosol plumes from agricultural and other sources. Aglite uses a high-repetition rate low-pulse energy 3-wavelength YAG laser with photon-counting detection together with a steerable pointing mirror to measure aerosol concentration with high spatial and temporal resolution. Aglite has been used in field campaigns in Iowa, Utah and California. The instrument is described, and performance and lidar sensitivity data are presented. The value of the lidar …