Results 251 to 260 of about 24,901,573 (306)

Bathymetric Data Reduction Subsystem.

1979
Abstract : The subject final technical report covers Phase I - the Basic Operating Capability of the Bathymetric Data Reduction Subsystem. The report discusses and evaluates problems encountered during Phase I and the solutions which Synectics Corporation provided to these problems. There are four parts to this report.
R. Howarth, P. Bell
openaire   +1 more source

A Physics-Assisted Convolutional Neural Network for Bathymetric Mapping Using ICESat-2 and Sentinel-2 Data

IEEE Transactions on Geoscience and Remote Sensing, 2022
Machine learning methods for water depth estimation using remote sensing require accurate prior depth measurements. The successful operation of the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) mission provides depth in shallow water directly ...
Kaidi Peng, Huan Xie, Qi Xu, Peiqi Huang, Ziyi Liu   +4 more
semanticscholar   +1 more source

Holes in the ocean: Filling voids in bathymetric lidar data

Computers & Geosciences, 2011
The mapping of coral reefs may be efficiently accomplished by the use of airborne laser bathymetry. However, there are often data holes within the bathymetry data which must be filled in order to produce a complete representation of the coral habitat. This study presents a method to fill these data holes through data merging and interpolation.
John B. Coleman, Xiaobai Angela Yao, Thomas R. Jordan, Marguerite Madden   +3 more
openaire   +1 more source

Improving bathymetric images exploration: A data mining approach

Computers & Geosciences, 2013
Bathymetry is the science of measuring and charting the depths to determine the topography of the seafloor and other bodies of water. It has several important practical and academic applications. For this reason, having computational tools capable of analyzing bathymetric charts would be useful for domain experts studying the various problems related ...
Luis Fernando Planella Gonzalez, Maria Alejandra Gomez Pivel, Duncan Dubugras Alcoba Ruiz   +2 more
openaire   +1 more source

Adaptive High-Speed Echo Data Acquisition Method for Bathymetric LiDAR

IEEE Transactions on Geoscience and Remote Sensing
The real-time data acquisition system (RTDAQS) in the bathymetric light detection and ranging (LiDAR) instrument, named “GQ-Cormorant 19,” previously developed by our group cannot completely acquire the echo data from the water surface and water bottom ...
Guoqing Zhou, Guoshuai Jia, Xiang Zhou, Naihui Song, Jinhuang Wu, Ke Gao, Jing Huang, Jiasheng Xu, Qiang Zhu   +8 more
semanticscholar   +1 more source

Surface approximation from rapidly varying bathymetric data

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
In this article, we introduce a surface approximation technique to address the problem of fitting a surface to a given set of curves. The problem of constructing a smooth surface from a given set of curves appears in many instances in geophysics and geology.
Christian Gout, Isabelle Ramière
openaire   +1 more source

On the accuracy of digital bathymetric data

Journal of Geophysical Research: Solid Earth, 1993
The global 5‐arcmin gridded topography data ETOPO‐5 are based on contour maps rather than original soundings and have large errors. The artificial statistical distribution generated by digitizing contours makes these data unsuitable for use in regression models for depth‐age variations.
openaire   +1 more source

Fast trend extraction and identification of spikes in bathymetric data

Computers & Geosciences, 2009
Average interpolating subdivision is a fast method for finding trends in data sets collected with multibeam echo sounders. By grouping a suitable number of pings together, a swath is sectioned into a series of geographical areas that are analyzed consecutively.
Jan Terje Bjørke, Stein Nilsen
openaire   +1 more source

Bathymetric analysis of in-water upwelling-radiance data

SPIE Proceedings, 1990
In June 1988, the Naval Ocean Research and Development Activity (NORDA) collected some "in-water" data using its Towed Underwater Pumping System (TUPS) in the near-shore waters off St. Andrews State Park, Shell Island, Florida. These in situ data include latitude; longitude; depth in meters; narrow-band upwelling at 465 nm, 507 nm, and 532 nm; broad-
Temple H. Fay, H. V. Miller, R. K. Clark
openaire   +1 more source

Adaptive Modeling and Compression of Bathymetric Data With Variable Density

IEEE Journal of Oceanic Engineering, 2020
This article presents an original approach to bathymetric data modeling consisting of three main elements: first, it uses a very high-resolution grid; second, it employs cells decomposition into smaller blocks depending on local roughness; and third, it ...
W. Maleika, P. Forczmański
semanticscholar   +1 more source