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Gaussian decomposition and calibration of a novel small-footprint full-waveform digitising airborne laser scanner / W. Wagner in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 2 (April 2006)
[article]
Titre : Gaussian decomposition and calibration of a novel small-footprint full-waveform digitising airborne laser scanner Type de document : Article/Communication Auteurs : W. Wagner, Auteur ; A. Ullrich, Auteur ; et al., Auteur Année de publication : 2006 Article en page(s) : pp 100 - 112 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] décomposition de Gauss
[Termes IGN] empreinte
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] extraction
[Termes IGN] impulsion laser
[Termes IGN] instrumentation Riegl
[Termes IGN] lasergrammétrie
[Termes IGN] Lidar
[Termes IGN] numérisation automatique
[Termes IGN] onde électromagnétique
[Termes IGN] rétrodiffusion
[Termes IGN] signal laser
[Termes IGN] télémètre laser aéroporté
[Termes IGN] télémétrie laser aéroporté
[Termes IGN] Vienne (capitale Autriche)Résumé : (Auteur) In this study, we use a technique referred to as Gaussian decomposition for processing and calibrating data acquired with a novel small-footprint airborne laser scanner that digitises the complete waveform of the laser pulses scattered back from the Earth's surface. This paper presents the theoretical basis for modelling the waveform as a series of Gaussian pulses. In this way the range, amplitude, and width are provided for each pulse. Using external reference targets it is also possible to calibrate the data. The calibration equation takes into account the range, the amplitude, and pulse width and provides estimates of the backscatter cross-section of each target. The applicability of this technique is demonstrated based on RIEGL LMS-Q560 data acquired over the city of Vienna. Copyright ISPRS Numéro de notice : A2006-143 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2005.12.001 En ligne : https://doi.org/10.1016/j.isprsjprs.2005.12.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27870
in ISPRS Journal of photogrammetry and remote sensing > vol 60 n° 2 (April 2006) . - pp 100 - 112[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-06021 SL Revue Centre de documentation Revues en salle Disponible Spectral and radiometric requirements for the airborne thermal imaging spectrometer ARES / R. Richter in International Journal of Remote Sensing IJRS, vol 26 n° 15 (August 2005)
[article]
Titre : Spectral and radiometric requirements for the airborne thermal imaging spectrometer ARES Type de document : Article/Communication Auteurs : R. Richter, Auteur ; A. Muller, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 3149 - 3162 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Airborne Reflective/Emissive Spectrometer
[Termes IGN] capteur aérien
[Termes IGN] image thermique
[Termes IGN] longueur d'onde
[Termes IGN] radiance
[Termes IGN] simulation
[Termes IGN] spectromètreRésumé : (Auteur) ARES (Airborne Reflective/Emissive Spectrometer) is an airborne imaging spectrometer for remote sensing of land surfaces covering the wavelength regions 0.45-2.45 um and 8-13 um with 160 channels. The instrument is being built by Integrated Spectronics, financed by DLR and GFZ, and will be available to the scientific community from 2005 on. This contribution presents the design of the thermal spectrometer covering the 8-13 um region with 32 channels of 150 nm bandwidth while a separate paper treats the instrument specifications in the solar reflective region. The spectroradiometric design is based on scientific requirements derived from application scenarios comprising vegetation, soils of different compositions, and mineral exploration. The corresponding emissivity spectra are input for a simulation model that calculates at-sensor radiance spectra, resamples them with the channel-specific response functions, adds different amounts of sensor noise to the signal, and performs a retrieval to get the corresponding noisy surface emissivity spectra. The results of the simulation study indicate that a spectral wavelength accuracy of 3 nm and a sensor noise equivalent temperature of 0.05 - 0.1K are required for an accurate retrieval of emissivity spectra. Numéro de notice : A2005-324 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160500127658 En ligne : https://doi.org/10.1080/01431160500127658 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27460
in International Journal of Remote Sensing IJRS > vol 26 n° 15 (August 2005) . - pp 3149 - 3162[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-05151 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Doris satellite antenna maps derived from long-term residuals time series / Pascal Willis in Advances in space research, vol 36 n° 3 (March 2005)
[article]
Titre : Doris satellite antenna maps derived from long-term residuals time series Type de document : Article/Communication Auteurs : Pascal Willis , Auteur ; Shailen Desai, Auteur ; Willy I. Bertiger, Auteur ; Bruce J. Haines, Auteur ; Albert Auriol, Auteur Année de publication : 2005 Article en page(s) : pp 486 - 497 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] balise DORIS
[Termes IGN] DORIS
[Termes IGN] orbitographie
[Termes IGN] phase
[Termes IGN] récepteur DORIS
[Termes IGN] série temporelle
[Termes IGN] trajet multipleRésumé : (Auteur) Recent studies have shown that phase pattern models for the Jason1 GPS antenna significantly benefit GPSbased precise orbit determination (POD) for the satellite. We have used a similar technique to derive DORIS receiver antenna maps, using all available DORIS tracking data over long time periods (from 1993.0 to 2004.0). We demonstrate that the derived correction models are satellite specific. For a given satellite, yeartoyear estimations show clear systematic patterns. Some of these systematic patterns are attributable to the derivative of the multipath effects in the direction of the satellite velocity. For early SPOT data, the patterns can be explained by an offset in the TAI time tagging (typically 8 us). In a second step, we have applied the SPOT2 antenna correction models in precise orbit determination and in the positioning of ground beacons. Preliminary results on DORIS/SPOT2 show that application of the DORIS antenna maps lead to a slight improvement of the derived POD and geodetic results (typically less than 5%). Numéro de notice : A2005-603 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2005.03.095 Date de publication en ligne : 06/05/2005 En ligne : https://doi.org/10.1016/j.asr.2005.03.095 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33946
in Advances in space research > vol 36 n° 3 (March 2005) . - pp 486 - 497[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 38017-01 30.82 Tiré à part Centre de documentation Géodésie Disponible Fundamentals of radar signal processing / M. Richards (2005)
Titre : Fundamentals of radar signal processing Type de document : Monographie Auteurs : M. Richards, Auteur Editeur : Boston, New York, ... : McGraw-Hill Année de publication : 2005 Collection : Electronic Engineering Importance : 513 p. Format : 19 x 24 cm ISBN/ISSN/EAN : 978-0-07-144474-3 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] correction du signal
[Termes IGN] échantillonnage de signal
[Termes IGN] écho radar
[Termes IGN] effet Doppler
[Termes IGN] filtrage linéaire
[Termes IGN] forme d'onde
[Termes IGN] image radar moirée
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] radar à antenne synthétique
[Termes IGN] radargrammétrie
[Termes IGN] rapport signal sur bruit
[Termes IGN] seuillage
[Termes IGN] télédétection en hyperfréquence
[Termes IGN] traitement du signal
[Termes IGN] transformation de FourierIndex. décimale : 35.22 Télédétection en hyperfréquence - Traitement d'image radar Résumé : (Editeur) [...] This rigorous text provides detailed coverage of radar digital signal processing (DSP) fundamentals and applications not to be found elseewhere in the literature. [...] It provides clear modern instruction in radar DSP basics and the skills needed in both design and analysis of common radar algorithms. This text is ideal for those looking to go beyond the cursory treatment of signal processing in general radar systems books to seeek more detailed tratments of signal models, waveforms, interference reduction and detection, as well as to gain the foundation needed for specialty texts that focus on advanced radar signal processing topics such as SAR and STAP (Space- Time Adaptive Processing). Note de contenu : Chapter 1 : Introduction to Radar Systems
Chapter 2 : Signal Models
Chapter 3 : Sampling and Quantization of Pulsed Radar Signals
Chapter 4 : Radar Waveforms
Chapter 5 : Doppler Processing
Chapter 6 : Detection Fundamentals
Chapter 7 : Constant False Alarm Rate (CFAR) Detection
Chapter 8 : Introduction to Synthetic Aperture Radar
Chapter 9 : Introduction to Adaptive Beamforming and Space-Time Adaptive ProcessingNuméro de notice : 20107 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62916 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20107-01 35.22 Livre Centre de documentation Télédétection Disponible Initial analysis and visualization of waveform laser scanner data / Johanna Töpel (2005)
Titre : Initial analysis and visualization of waveform laser scanner data Type de document : Mémoire Auteurs : Johanna Töpel, Auteur Editeur : Linköping [Suède] : Linköping Institute of Technology Année de publication : 2005 Importance : 63 p. Format : 21 x 30 cm Note générale : bibliographie
Master’s Thesis in Automatic ControlLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] algorithme espérance-maximisation
[Termes IGN] canopée
[Termes IGN] classification orientée objet
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] faisceau laser
[Termes IGN] forêt
[Termes IGN] forme d'onde
[Termes IGN] forme d'onde pleine
[Termes IGN] impulsion laser
[Termes IGN] semis de points
[Termes IGN] signal laser
[Termes IGN] visualisation 3DRésumé : (auteur) Conventional airborne laser scanner systems output the three-dimensional coordinates of the surface location hit by the laser pulse. Data storage capacity and processing speeds available today has made it possible to digitally sample and store the entire reflected waveform, instead of only extracting the coordinates. Research has shown that return waveforms can give even more detailed insights into the vertical structure of surface objects, surface slope, roughness and reflectivity than the conventional systems. One of the most important advantages with registering the waveforms is that it gives the user the possibility to himself define the way range is calculated in post-processing. In this thesis different techniques have been tested to visualize a waveform data set in order to get a better understanding of the waveforms and how they can be used to improve methods for classification of ground objects. A pulse detection algorithm, using the EM algorithm, has been implemented and tested. The algorithm output position and width of the echo pulses. One of the results of this thesis is that echo pulses reflected by vegetation tend to be wider than those reflected by for example a road. Another result is that up till five echo pulses can be detected compared to two echo pulses that the conventional system detects. Note de contenu : Introduction
1- Registred waveform
2- Lidar data
3- Documentation of waveforms
4- Vizualisation
5- Pulse detection
6- Extracted points
7- DiscussionNuméro de notice : 21710 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Mémoire masters divers Organisme de stage : Swedish Defence Research Agency FOI Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90997 PermalinkThe GNSS integer ambiguities / S. Verhagen (2005)PermalinkA review of satellite and airborne sensors for remote sensing based detection of minefields and landmines / B.H. Maathuis in International Journal of Remote Sensing IJRS, vol 25 n° 23 (December 2004)PermalinkThe development of superspectral approaches for the improvement of land cover classification / M. Gianinetto in IEEE Transactions on geoscience and remote sensing, vol 42 n° 11 (November 2004)PermalinkA quantitative measure for the quality of InSAR interferograms based on phase differences / Z. Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 10 (October 2004)PermalinkSatellite constellation with direct radio measurements for atmospheric studies : WATS mission case / G. Alberti in International Journal of Remote Sensing IJRS, vol 25 n° 18 (September 2004)PermalinkA phase signature for detecting wet subsurface structures using polarimetric L-band SAR / Y. Lasne in IEEE Transactions on geoscience and remote sensing, vol 42 n° 8 (August 2004)PermalinkRefinement of wavelength calibrations of hyperspectral imaging data using a spectrum-machine technique / B.C. Gao in Remote sensing of environment, vol 90 n° 4 (30/04/2004)PermalinkElectromagnetic wave scattering from the sea surface in the presence of wind wave patterns / V. Shrira in International Journal of Remote Sensing IJRS, vol 24 n° 24 (December 2003)PermalinkGeometric processing of hyperspectral image data acquired by VIFIS on board light aircraft / Y. Gu in International Journal of Remote Sensing IJRS, vol 24 n° 23 (December 2003)PermalinkMapping of the tropical forest cover of insular Southeast Asia from SPOT-4 Vegetation images / Hans-Jürgen Stibig in International Journal of Remote Sensing IJRS, vol 24 n° 18 (September 2003)PermalinkSatellites / Michel Capderou (2003)PermalinkModeling and reduction of SAR interferometric phase noise in the wavelet domain / C. Lopez-Martinez in IEEE Transactions on geoscience and remote sensing, vol 40 n° 12 (December 2002)PermalinkCalculation of the calibration constant of polarization Lidar and its dependency on atmospheric temperature / Andreas Behrendt in Optics express, vol 10 n° 16 (12/08/2002)PermalinkATDI, le SIG appliqué à la radio : le mariage de la géomatique et de la radio / Anonyme in Géomatique expert, n° 14 (01/03/2002)PermalinkOn the estimation of radar polarization orientation shifts induced by terrain slopes / Jong-Sen Lee in IEEE Transactions on geoscience and remote sensing, vol 40 n° 1 (January 2002)PermalinkRéalisation d'un système d'information géographique dédié à l'étude des déformations de surface sur la ville de Paris / J.L. Kouame (2002)Permalinkvol 38 n° 4 Tome 1 - July 2000 - Special issue on computational wave issues in remote sensing, imaging and target identification, propagation and inverse scattering (Bulletin de IEEE Transactions on geoscience and remote sensing) / Geoscience and remote sensing societyPermalinkElectromagnetic optimization by genetic algorithms / Yahya Rahmat-Samii (1999)PermalinkPredicting multipath effects and diffraction errors-simulation of GPS performance in open cut mines / R. Walker in GIM Geodetical Info Magazine, vol 12 n° 2 (February 1998)Permalink