Results 21 to 30 of about 589,957 (205)

Krill: An exploration in underwater sensor networks [PDF]

open access: yes, 2005
While sensor networks have now become very popular on land, the underwater environment still poses some difficult problems. Communication is one of the difficult challenges under water. There are two options: optical and acoustic.
Chen, P.   +7 more
core   +3 more sources

The Instrument Design of the DLR Earth Sensing Imaging Spectrometer (DESIS)

open access: yesSensors, 2019
Whether for identification and characterization of materials or for monitoring of the environment, space-based hyperspectral instruments are very useful. Hyperspectral instruments measure several dozens up to hundreds of spectral bands.
David Krutz   +19 more
doaj   +1 more source

VOLUME BASED DTM GENERATION FROM VERY HIGH RESOLUTION PHOTOGRAMMETRIC DSMS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
In this paper we propose a new algorithm for digital terrain (DTM) model reconstruction from very high spatial resolution digital surface models (DSMs).
B. Piltz, S. Bayer, A. M. Poznanska
doaj   +1 more source

COMPARISON BETWEEN TWO GENERIC 3D BUILDING RECONSTRUCTION APPROACHES – POINT CLOUD BASED VS. IMAGE PROCESSING BASED [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper compares two generic approaches for the reconstruction of buildings. Synthesized and real oblique and vertical aerial imagery is transformed on the one hand into a dense photogrammetric 3D point cloud and on the other hand into ...
D. Dahlke, M. Linkiewicz
doaj   +1 more source

Numerical and Monte Carlo Simulation for Polychromatic L-Shell X-ray Fluorescence Computed Tomography Based on Pinhole Collimator with Sheet-Beam Geometry

open access: yesPhotonics, 2022
X-ray fluorescence computed tomography (XFCT) has attracted wide attention due to its ability to simultaneously and nondestructively obtain structural and elemental distribution information within samples.
Shuang Yang   +4 more
doaj   +1 more source

Regional Rapid Mapping for First Responders - Turkey 2023 Earthquake [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
In disaster scenarios, up-to-date information about the affected areas is of fundamental importance, especially for Search and Rescue (SaR) teams. Although the usual space-based optical remote sensing systems provide an overview, the ground resolution of
J. Brauchle   +7 more
doaj   +1 more source

Inkjet printed LED based pH chemical sensor for gas sensing [PDF]

open access: yes, 2009
Predictable behaviour is a critical factor when developing a sensor for potential deployment within a wireless sensor network (WSN). The work presented here details the fabrication and performance of an optical chemical sensor for gaseous acetic acid ...
Abe   +44 more
core   +1 more source

TERRAIN AWARE IMAGE CLIPPING FOR REAL-TIME AERIAL MAPPING [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Many remote sensing applications demand for a fast and efficient way of generating orthophoto maps from raw aerial images. One prerequisite is direct georeferencing, which allows to geolocate aerial images to their geographic position on the earth’s ...
D. Hein, R. Berger
doaj   +1 more source

Remote Sensing of High Temperature Events by the FireBird Mission [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
More than 10 years after the launch of DLR’s first small satellite BIRD, a follow on project called FireBird was started. Based on the success of the BIRD mission, the main scientific goal- the investigation of high temperature events and their impact on
E. Lorenz   +5 more
doaj   +1 more source

Multi-Sensor System For Level Measurements With Optical Fibres [PDF]

open access: yes, 2002
A system for measuring liquid level in multiple tanks using optical fibre technology has been developed. The oil field service industry can benefit from this intrinsically safe technology.
Garcinuño, J.   +3 more
core   +2 more sources

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