Results 261 to 270 of about 1,588,278 (278)

AQS-20 sonar processing enhancement for bathymetry estimation

Proceedings of OCEANS 2005 MTS/IEEE, 2005
Bathymetry is used to determine optimal tactics during Mine Warfare operations. Previous work demonstrated that bathymetric data could be acquired from the Volume Search Sonar (VSS) mounted on the AQS-20 system. The VSS transmitter produces a pulse at approximately one-second intervals along the track.
C. Barbu, W. Avera, D. Bibee, M. Harris, C. Steed   +4 more
openaire   +1 more source

Estimating layover in broadband synthetic aperture sonar bathymetry

Europe Oceans 2005, 2005
In this paper we investigate broadband interferometric height estimation using a small vertical hydrophone array and multiple frequency bands as a means of reducing image layover artefacts. We demonstrate the effect of layover on bathymetric images using simulated imagery to avoid the ground-truth problem.
M.P. Hayes, A.J. Hunter, P.J. Barclay, P.T. Gough   +3 more
openaire   +1 more source

Internal wave effects on seafloor imagery and bathymetry estimates

The Journal of the Acoustical Society of America, 2017
Large linear structures (tens of meters by several meters) have been observed recently in seafloor imagery and bathymetry collected with both synthetic aperture sonar (SAS) and multibeam echosounder (MBES) systems. It has been suggested [Hansen, et al., IEEE J.
Anthony P. Lyons, Roy E. Hansen, James Prater, Warren A. Connors, Glen Rice, Yan Pailhas   +5 more
openaire   +1 more source

The research on RTM of bathymetry estimation in airborne gravity data downward continuation

2010 Sixth International Conference on Natural Computation, 2010
The RTM of bathymetry is introduced in the remove-restore technique in order to construct high accuracy marine gravity map. Based on the relationship between the bathymetry and the gravity anomaly, the bathymetry model is used to study the effect of the bathymetry to the marine gravity anomaly.
Cheng Yi, Jin Luo, Chunbo Xiu
openaire   +2 more sources

EVALUATING SWOT DATA FOR ESTIMATING RIVER BATHYMETRY

River bathymetry is essential for understanding channel morphology and simulating river hydrodynamics yet collecting it through field surveys is time-consuming and expensive. This study tests whether data from the SWOT satellite can help fill that gap.
openaire   +1 more source

Estimation of Bathymetry Profiles For Poorly Gauged River Networks

Knowledge of water depth h(x,t) [m] in rivers, more precisely the cross-sectional area A(x,t) [m^2], or equivalently the bathymetry b(x) [m] once a geometrical wetted cross-sections model is fixed, is indispensable data for setting up river dynamics models.
Monnier, Jérôme, Levillain, Jessie, Larnier, Kevin   +2 more
openaire   +1 more source

Estimation of river bathymetry and spatial distribution of precipitation and their uncertainties

AIP Conference Proceedings, 2023
Mohd Talha Anees, Mohammad Nishat Akhtar, Ayub Ahmed Janvekar, Gajanand Gupta, Agustinus Purna Irawan, Ahmad Kamal Ismail, Mazlan Mohamed   +6 more
openaire   +1 more source

Deep learning application to large-scale bathymetry estimation

2021
Eric Darve, Peter K. Kitanidis, Tyler Hesser, Matthew W. Farthing, Jonghyun Lee, Yizhou Qian, Mojtaba Forghanioozroody   +6 more
openaire   +1 more source

River discharge and bathymetry estimation from SWOT altimetry measurements

Inverse Problems in Science and Engineering, 2021
Jerome Monnier
exaly  

Wave Period and Bathymetry Estimations from Satellite Images

2016
We present an approach for wave period and coastal water depth estimation. The approach based on wave observations, is entirely independent of ancillary data and can theoretically be applied to SAR or optical images. In order to demonstrate its feasibility we apply our method to more than 50 Sentinel-1A images of the Hawaiian Islands, well-known for ...
Danilo, Celine Gabrielle Therese, Melgani, Farid   +1 more
openaire   +1 more source