Results 31 to 40 of about 394 (161)

A Spatially Explicit, Multi-Criteria Decision Support Model for Loggerhead Sea Turtle Nesting Habitat Suitability: A Remote Sensing-Based Approach

Remote Sensing, 2016
Nesting habitat for the federally endangered loggerhead sea turtle (Caretta caretta) were designated as critical in 2014 for beaches along the Atlantic Coast and Gulf of Mexico.
Lauren Dunkin, Molly Reif, Safra Altman, Todd Swannack   +3 more
doaj   +1 more source

Deriving Highly Accurate Shallow Water Bathymetry From Sentinel-2 and ICESat-2 Datasets by a Multitemporal Stacking Method

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Empirical models have been widely used to retrieve shallow water bathymetry from multispectral/hyperspectral satellite imagery. In traditional studies on deriving the topography and monitoring its temporal changes, a single date satellite image ...
Nan Xu, Xin Ma, Yue Ma, Pufan Zhao, Jian Yang, Xiao Hua Wang   +5 more
doaj   +1 more source

Simulating an Airborne Lidar Bathymetry (ALB) System

Imaging and Applied Optics Congress, 2010
This study’s focus is on the horizontal and vertical uncertainties associated with ALB measurements due to scattering through the water column. A lidar simulator was constructed and we present its design and preliminary results.
Pe'eri, Shachak, Kumar, Amaresh M, Calder, Brian R.   +2 more
openaire   +2 more sources

EVALUATION OF A GNSS/IMU/LIDAR-INTEGRATION FOR AIRBORNE LASER SCANNING USING RTKLIB PPK AND PPP GNSS SOLUTIONS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Airborne laser scanning allows for efficient acquisition of accurate 3D data for large areas. Because georeferencing of the LiDAR data requires knowledge of the platform trajectory, the laser scanner system commonly comprises a global navigation ...
F. Pöppl, G. Mandlburger, N. Pfeifer
doaj   +1 more source

Confidence Measure of the Shallow-Water Bathymetry Map Obtained through the Fusion of Lidar and Multiband Image Data

Journal of Remote Sensing, 2021
With the advancement of Lidar technology, bottom depth (H) of optically shallow waters (OSW) can be measured accurately with an airborne or space-borne Lidar system (HLidar hereafter), but this data product consists of a line format, rather than the ...
Zhongping Lee, Mingjia Shangguan, Rodrigo A. Garcia, Wendian Lai, Xiaomei Lu, Junwei Wang, Xiaolei Yan   +6 more
doaj   +1 more source

Satellite-derived bathymetry using machine learning and optimal Sentinel-2 imagery in South-West Florida coastal waters

GIScience & Remote Sensing, 2022
This study examines the use of the Multi-Spectral Instrument (MSI) in Sentinel-2 satellite in combination with regression-based random forest models to estimate bathymetry along the extended southwestern Florida nearshore region.
S.S.J.D. Mudiyanselage, A. Abd-Elrahman, B. Wilkinson, V. Lecours   +3 more
doaj   +1 more source

Development of a Lightweight Single-Band Bathymetric LiDAR

Remote Sensing, 2022
Traditional bathymetry LiDAR (light detection and ranging) onboard manned and/or unmanned airborne systems cannot operate in the context of narrow rivers in urban areas with high buildings and in mountainous areas with high peaks.
Guoqing Zhou, Xiang Zhou, Weihao Li, Dawei Zhao, Bo Song, Chao Xu, Haotian Zhang, Zhexian Liu, Jiasheng Xu, Gangchao Lin, Ronghua Deng, Haocheng Hu, Yizhi Tan, Jinchun Lin, Jiazhi Yang, Xueqin Nong, Chenyang Li, Yiqiang Zhao, Cheng Wang, Lieping Zhang, Liping Zou   +20 more
doaj   +1 more source

Evaluating Multispectral Imagery and Lidar Data for Vegetation Classification: A Comparative Assessment of UASs and Traditional Field Methods to Support Coastal Restoration Monitoring

Remote Sensing
There is growing interest in uncrewed aircraft system (UAS) technology to supplement coastal restoration monitoring, yet it’s unclear how UAS data products compare to traditional field monitoring data that are fundamental to restoration programs. In this
Molly K. Reif, Aaron N. Schad, Joseph H. Harwood, Christopher L. Macon, Lynde L. Dodd   +4 more
doaj   +1 more source

Comparison of Field and Virtual Vegetation Surveys Conducted Using Uncrewed Aircraft System (UAS) Imagery at Two Coastal Marsh Restoration Projects

Remote Sensing
Traditional field vegetation plot surveys are critical for monitoring ecosystem restoration performance and include visual observations to quantitatively measure plants (e.g., species composition and abundance).
Aaron N. Schad, Molly K. Reif, Joseph H. Harwood, Christopher L. Macon, Lynde L. Dodd, Katie L. Vasquez, Kevin D. Philley, Glenn E. Dobson, Katie M. Steinmetz   +8 more
doaj   +1 more source

Quantitative Evaluation of Bathymetric LiDAR Sensors and Acquisition Approaches in Lærdal River in Norway

Remote Sensing, 2023
The development of bathymetric LiDAR technology has contributed significantly to both the quality and quantity of river bathymetry data. Although several bathymetric LiDAR sensors are available today, studies that evaluate the performance of the ...
Mahmoud Omer Mahmoud Awadallah, Christian Malmquist, Morten Stickler, Knut Alfredsen   +3 more
doaj   +1 more source