Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Patrick Westfeld"'
Autor:
Cord-Hinrich Jahn, Patrick Westfeld, Bernd Vahrenkamp, Gerhard Wübbena, Martin Schmitz, Robert Schumann, Christoph Wallat
Publikováno v:
The International Hydrographic Review. 28:139-157
In a two-year research and development project, the prototype of a GNSS (Global Navigation Satellite System) based real-time service using a SSR-RTK (State Space Representation-Real Time Kinematic) approach was developed for the German exclusive econ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee0239f595f3edefccbf3bbfab2ec83a
https://doi.org/10.58440/ihr-28-a16
https://doi.org/10.58440/ihr-28-a16
Autor:
Jean-Guy Nistad, Patrick Westfeld
Publikováno v:
The International Hydrographic Review. 27:35-54
Multibeam bathymetry surveys conducted in highly stratified environments are routinely affected by sound speed errors. The approach proposed here aims to combine measured with synthetic sound speed profiles in order to minimize sound speed errors. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3002a79685b4f30b018a678001b6c3bd
https://doi.org/10.58440/ihr-27-a03
https://doi.org/10.58440/ihr-27-a03
Publikováno v:
PFG – Journal of Photogrammetry, Remote Sensing and Geoinformation Science. 89:139-158
Airborne LiDAR bathymetry is an efficient measurement method for area-wide acquisition of water bottom topography in shallow water areas. However, the method has a limited penetration depth into water bodies due to water turbidity. This affects the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fc35c3322f26ab49056d1c3fc7a9108
https://doi.org/10.1007/s41064-021-00147-y
https://doi.org/10.1007/s41064-021-00147-y
Sublittoral hard substrates, for example formed by blocks and boulders, are hotspots for marine biodiversity, especially for benthic communities. Knowledge on boulder occurrence is also important for marine and coastal management, including offshore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88a928108c4b203eb7242052e743d903
https://doi.org/10.5194/egusphere-egu22-1445
https://doi.org/10.5194/egusphere-egu22-1445
Publikováno v:
PFG – Journal of Photogrammetry, Remote Sensing and Geoinformation Science. 90:495-496
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::690f02d43495c8605dc6e4d145f1a5d8
https://doi.org/10.1007/s41064-022-00212-0
https://doi.org/10.1007/s41064-022-00212-0
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2-W10, Pp 113-117 (2019)
Airborne Lidar Bathymetry is a laser scanning technique to measure waterbody bottom topography in shallow waterbodies with limited turbidity. The topic has recently gained relevance due to the advent of new sensor technologies allowing for much highe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61723b654da7632410f00cca0418ff5e
https://doi.org/10.5194/isprs-archives-xlii-2-w10-113-2019
https://doi.org/10.5194/isprs-archives-xlii-2-w10-113-2019
Publikováno v:
PFG – Journal of Photogrammetry, Remote Sensing and Geoinformation Science.
To achieve a geometrically accurate representation of the water bottom, airborne LiDAR bathymetry (ALB) requires the correction of the raw 3D point coordinates due to refraction at the air–water interface, different signal velocity in air and water
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ef2939381670714fb5687a1391d5e8c
https://doi.org/10.1007/s41064-021-00146-z
https://doi.org/10.1007/s41064-021-00146-z
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2, Pp 961-967 (2018)
Airborne LiDAR bathymetry (ALB) requires a refraction correction on the basis of Snell’s law at the air-water interface and a speedof- light correction to be applied on the raw laser data in order to achieve a geometric accurate representation of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a407c7e2745643ba8a17bc1be0581b50
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/961/2018/isprs-archives-XLII-2-961-2018.pdf
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/961/2018/isprs-archives-XLII-2-961-2018.pdf
Publikováno v:
The Photogrammetric Record. 33:30-48
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d01e2d93969be0977469f733e922953
https://doi.org/10.1111/phor.12216
https://doi.org/10.1111/phor.12216
Publikováno v:
ISPRS Journal of Photogrammetry and Remote Sensing. 128:314-325
This contribution investigates the effects of ocean wave patterns on 3D underwater point coordinate accuracy for LiDAR bathymetry. The refraction of the finite diameter laser pulse passing the air/water interface is modeled differentially in a strict
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::699691986c2eec99e2c3c752ffec7860
https://doi.org/10.1016/j.isprsjprs.2017.04.008
https://doi.org/10.1016/j.isprsjprs.2017.04.008