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Role of tie points in integrated sensor orientation for photogrammetric map compilation / Kourosh Khoshelham in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 3 (March 2009)
[article]
Titre : Role of tie points in integrated sensor orientation for photogrammetric map compilation Type de document : Article/Communication Auteurs : Kourosh Khoshelham, Auteur Année de publication : 2009 Article en page(s) : pp 305 - 312 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] erreur
[Termes IGN] espace image
[Termes IGN] GPS-INS
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] orientation du capteur
[Termes IGN] orientation externe
[Termes IGN] point d'appui
[Termes IGN] points homologuesRésumé : (Auteur) Direct measurement of exterior orientation parameters has been a challenge in photogrammetry for many years. Direct sensor orientation using a calibrated GPS/INS system can potentially eliminate the need for ground control points and aerial triangulation, and consequently, result in a great reduction in the cost and time of aerial photogrammetry. Previous studies have shown that, compared to conventional aerial triangulation, direct sensor orientation yields larger errors in the image and object space. It has also been shown that including a number of tie points within an integrated orientation approach can result in a reduction of errors in the image space. In this paper, the influence of the number and distribution of tie points on integrated orientation is investigated. Experiments with various numbers of tie points regularly as well as randomly distributed are presented. Results indicate that an increase in the number of tie points up to one point per model results in a considerable reduction of the errors in the image space. Copyright ASPRS Numéro de notice : A2009-039 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.75.3.305 En ligne : https://doi.org/10.14358/PERS.75.3.305 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29669
in Photogrammetric Engineering & Remote Sensing, PERS > vol 75 n° 3 (March 2009) . - pp 305 - 312[article]Testing of Global Pressure-Temperature (GPT) Model and Global Mapping Function (GMF) in GPS analyses / Jan Kouba in Journal of geodesy, vol 83 n° 3-4 (March - April 2009)
[article]
Titre : Testing of Global Pressure-Temperature (GPT) Model and Global Mapping Function (GMF) in GPS analyses Type de document : Article/Communication Auteurs : Jan Kouba, Auteur Année de publication : 2009 Article en page(s) : pp 199 - 208 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse comparative
[Termes IGN] données GPS
[Termes IGN] données météorologiques
[Termes IGN] modèle atmosphérique
[Termes IGN] modèle météorologique
[Termes IGN] positionnement par GPS
[Termes IGN] positionnement ponctuel précis
[Termes IGN] pression atmosphérique
[Termes IGN] propagation du signal
[Termes IGN] températureRésumé : (Auteur) Several sources of a priori meteorological data have been compared for their effects on geodetic results from GPS precise point positioning (PPP). The new global pressure and temperature model (GPT), available at the IERS Conventions web site, provides pressure values that have been used to compute a priori hydrostatic (dry) zenith path delay z h estimates. Both the GPT-derived and a simple height-dependent a priori constant z h performed well for low- and mid-latitude stations. However, due to the actual variations not accounted for by the seasonal GPT model pressure values or the a priori constant z h, GPS height solution errors can sometimes exceed 10 mm, particularly in Polar Regions or with elevation cutoff angles less than 10 degrees. Such height errors are nearly perfectly correlated with local pressure variations so that for most stations they partly (and for solutions with 5-degree elevation angle cutoff almost fully) compensate for the atmospheric loading displacements. Consequently, unlike PPP solutions utilizing a numerical weather model (NWM) or locally measured pressure data for a priori z h, the GPT-based PPP height repeatabilities are better for most stations before rather than after correcting for atmospheric loading. At 5 of the 11 studied stations, for which measured local meteorological data were available, the PPP height errors caused by a priori z h interpolated from gridded Vienna Mapping Function-1 (VMF1) data (from a NWM) were less than 0.5 mm. Height errors due to the global mapping function (GMF) are even larger than those caused by the GPT a priori pressure errors. The GMF height errors are mainly due to the hydrostatic mapping and for the solutions with 10-degree elevation cutoff they are about 50% larger than the GPT a priori errors. Copyright Springer Numéro de notice : A2009-194 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-008-0229-6 En ligne : https://doi.org/10.1007/s00190-008-0229-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29824
in Journal of geodesy > vol 83 n° 3-4 (March - April 2009) . - pp 199 - 208[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 266-09031 RAB Revue Centre de documentation En réserve L003 Disponible The design and the development of a hyperspectral and multispectral airborne mapping system / P.V. Gorsevski in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 2 (March - April 2009)
[article]
Titre : The design and the development of a hyperspectral and multispectral airborne mapping system Type de document : Article/Communication Auteurs : P.V. Gorsevski, Auteur ; P. Gessler, Auteur Année de publication : 2009 Article en page(s) : pp 184 - 192 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] capteur aérien
[Termes IGN] capteur hyperspectral
[Termes IGN] capteur multibande
[Termes IGN] centrale inertielle
[Termes IGN] GPS-INS
[Termes IGN] instrument aéroporté
[Termes IGN] récepteur GPSRésumé : (Auteur) Flexible and cost-effective tools for rapid image acquisition and natural resource mapping are needed by land managers. This paper describes the hardware and software architecture of a low-cost system that can be deployed on a light aircraft for rapid data acquisition. The Hyperspectral and Multispectral Cameras for Airborne Mapping (HAMCAM) was designed and developed in the Geospatial Laboratory for Environmental Dynamics at the University of Idaho as a student-learning tool, and to enhance the existing curriculum currently offered. The system integrates a hyperspectral sensor with four multispectral cameras, an Inertial Navigation System (INS), a Wide Area Augmentation System (WAAS)-capable Global Positioning System (GPS), a data acquisition computer, and custom software for running the sensors in a variety of different modes. The outputs include very high resolution imagery obtained in four adjustable visible and near-infrared bands from the multispectral imager. The hyperspectral sensor acquires 240 spectral bands along 2.7 nm intervals within the 445–900 nm range. The INS provides aircraft pitch, roll and yaw information for rapid geo-registration of the imagery. This paper will discuss the challenges associated with the development of the system and the integration of components and software for implementation of this system for natural resource management applications. In addition, sample imagery acquired by the sensor will be presented. Copyright ISPRS Numéro de notice : A2009-097 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2008.09.002 En ligne : https://doi.org/10.1016/j.isprsjprs.2008.09.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29727
in ISPRS Journal of photogrammetry and remote sensing > vol 64 n° 2 (March - April 2009) . - pp 184 - 192[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 081-09021 RAB Revue Centre de documentation En réserve L003 Disponible 081-09022 RAB Revue Centre de documentation En réserve L003 Disponible The effects of navigation sensors and spatial road network data quality on the performance of map matching algorithms / M. Quddus in Geoinformatica, vol 13 n° 1 (March 2009)
[article]
Titre : The effects of navigation sensors and spatial road network data quality on the performance of map matching algorithms Type de document : Article/Communication Auteurs : M. Quddus, Auteur ; R. Noland, Auteur ; W. Ochieng, Auteur Année de publication : 2009 Article en page(s) : pp 85 - 108 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] appariement de cartes
[Termes IGN] cohérence des données
[Termes IGN] géonavigateur
[Termes IGN] GPS assisté pour la navigation (technologies)
[Termes IGN] milieu urbain
[Termes IGN] performance
[Termes IGN] phase GPS
[Termes IGN] récepteur GPS
[Termes IGN] réseau routierRésumé : (Auteur) Map matching algorithms are utilised to support the navigation module of advanced transport telematics systems. The objective of this paper is to develop a framework to quantify the effects of spatial road network data and navigation sensor data on the performance of map matching algorithms. Three map matching algorithms are tested with different spatial road network data (map scale 1:1,250; 1:2,500 and 1:50,000) and navigation sensor data (global positioning system (GPS) and GPS augmented with deduced reckoning) in order to quantify their performance. The algorithms are applied to different road networks of varying complexity. The performance of the algorithms is then assessed for a suburban road network using high precision positioning data obtained from GPS carrier phase observables. The results show that there are considerable effects of spatial road network data on the performance of map matching algorithms. For an urban road network, the results suggest that both the quality of spatial road network data and the type of navigation system affect the link identification performance of map matching algorithms. Copyright Springer Numéro de notice : A2009-006 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1007/s10707-007-0044-x En ligne : https://doi.org/10.1007/s10707-007-0044-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29636
in Geoinformatica > vol 13 n° 1 (March 2009) . - pp 85 - 108[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 057-09011 RAB Revue Centre de documentation En réserve L003 Disponible The International Global navigation satellite systems Service (IGS): development and achievements / Gerhard Beutler in Journal of geodesy, vol 83 n° 3-4 (March - April 2009)
[article]
Titre : The International Global navigation satellite systems Service (IGS): development and achievements Type de document : Article/Communication Auteurs : Gerhard Beutler, Auteur ; A.W. Moore, Auteur ; Ivan I. Mueller, Auteur Année de publication : 2009 Article en page(s) : pp 297 - 307 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] effet atmosphérique
[Termes IGN] Global Navigation Satellite System
[Termes IGN] International Earth Rotation Service
[Termes IGN] International GNSS Service
[Termes IGN] orbitographie
[Termes IGN] positionnement par GPS
[Termes IGN] réseau géodésique terrestreRésumé : (Auteur) Since 21 June 1992 the International GPS Service (IGS), renamed International GNSS Service in 2005, produces and makes available uninterrupted time series of its products, in particular GPS observations from the IGS Global Network, GPS orbits, Earth orientation parameters (components x and y of polar motion, length of day) with daily time resolution, satellite and receiver clock information for each day with different latencies and accuracies, and station coordinates and velocities in weekly batches for further analysis by the IERS (International Earth Rotation and Reference Systems Service). At a later stage the IGS started exploiting its network for atmosphere monitoring, in particular for ionosphere mapping, for troposphere monitoring, and time and frequency transfer. This is why new IGS products encompass ionosphere maps and tropospheric zenith delays. This development became even more important when more and more space-missions carrying space-borne GPS for various purposes were launched. This article offers an overview for the broader scientific community of the development of the IGS and of the spectrum of topics addressed today with IGS data and products. Copyright Springer Numéro de notice : A2009-195 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-008-0268-z En ligne : https://doi.org/10.1007/s00190-008-0268-z Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29825
in Journal of geodesy > vol 83 n° 3-4 (March - April 2009) . - pp 297 - 307[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 266-09031 RAB Revue Centre de documentation En réserve L003 Disponible vol 83 n° 3-4 - March - April 2009 - The International GNSS Service (IGS) in a changing landscape of Global Navigation Satellite Systems (Bulletin de Journal of geodesy) / R. KleesPermalinkDeploying a Locata network to enable precise positioning in urban canyons / J.P. Montillet in Journal of geodesy, vol 83 n° 2 (February 2009)PermalinkNew perspectives on the use of GPS and GIS to support a highway performance study / D. Tong in Transactions in GIS, vol 13 n° 1 (February 2009)PermalinkSpatial database challenges / M. Jackson in GIM international, vol 23 n° 2 (February 2009)PermalinkApplications envisagées pour Galileo / Jonathan Chenal (2009)PermalinkAutonomous integrity: an error isotropy-based approach for multiple fault conditions / M. Azaola-Saenz in Inside GNSS, Vol 4 n° 1 (January-Fabruary 2009)PermalinkConsideration of time-correlated errors in a Kalman filter applicable to GNSS / M.G. Potovello in Journal of geodesy, vol 83 n° 1 (January 2009)PermalinkDéfinition de la nouvelle mensuration nationale de la Suisse 'MN95'. 13ème partie Introduction du cadre de référence 'MN95' dans l'infrastructure nationale de données géographiques / B. Vogel (2009)PermalinkEvolution de la base de données du RGP dans un contexte multi-systèmes / Jonathan Chenal (2009)PermalinkGéopositionnement et mobilités / Yves Alexandre (2009)PermalinkGNSS / Scott Gleason (2009)PermalinkA-GPS / Franck Van Diggelen (2009)PermalinkPermalinkPermalinkPermalinkPermalinkPermalinkReport on the Symposium of the IAG Subcommission 1.3A Europe (EUREF) held in London 6-9 June 2007 & reports of the EUREF technical working group (TWG), EUREF publication n° 17 / Joao Agria Torres (2009)PermalinkTeria Booste le RGP / Anne Fantuzzi in Géomètre, n° 2055 (janvier 2009)PermalinkTrajectory determination and analysis in sports by satellite and inertial navigation / Adrian Wägli (2009)Permalink