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On improving navigation accuracy of GPS/INS systems / Dorota A. Grejner-Brzezinska in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 4 (April 2005)
[article]
Titre : On improving navigation accuracy of GPS/INS systems Type de document : Article/Communication Auteurs : Dorota A. Grejner-Brzezinska, Auteur ; Charles K. Toth, Auteur ; Y. Yi, Auteur Année de publication : 2005 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] capteur à balayage
[Termes IGN] capteur imageur
[Termes IGN] centrale inertielle
[Termes IGN] élément d'orientation externe
[Termes IGN] filtrage du bruit
[Termes IGN] géoréférencement direct
[Termes IGN] GPS-INS
[Termes IGN] modèle d'erreur
[Termes IGN] modèle stochastique
[Termes IGN] orientation du capteur
[Termes IGN] pesanteur terrestre
[Termes IGN] point d'appui
[Termes IGN] positionnement par GPS
[Termes IGN] précision de localisation
[Termes IGN] système de numérisation mobileRésumé : (Auteur) Direct georeferencing, also referred to as direct platform orientation (DPO), is defined as direct measurement of the imaging sensor external orientation parameters (EOP), using positioning and orientation sensors, such as the Global Positioning System (GPS) and Inertial Navigation System (INS) or Inertial Measurement Unit (Imu). Imaging sensors, most frequently supported by the Dpo technique, are digital cameras, lidar systems, multi-spectral or hyper-spectral scanners, or interferometric synthetic aperture radar (INSAR). While for scanning sensors, the use of Dpo is compulsory, frame digital cameras can also directly benefit from this modern technique of sensor orientation. With direct sensor orientation, the requirement for ground control, tie-point matching and aerotriangulation (AT) is significantly reduced, or even entirely eliminated, resulting in shorter times of data acquisition and processing, and streamlined and highly automated data workflow and quality control. Most of the time, the requirement for ground control points is limited to periodic system calibrations and quality control check. Direct georeferencing is considered a fundamental technology of conventional mobile mapping systems (MMS). Despite significant progress in GSP/INS-based direct georeferencing technology in the last decade, there is still room for improvement in terms of better accuracy and better tolerance to GPS outages. This paper is focused on three error modeling and compensation techniques that could potentially improve GPS/INS system's performance on both land-based and airborne platforms : (1) extended gravity compensation, (2) IMU signal de-noising, and (3) stochastic modeling of IMU errors. Numéro de notice : A2005-158 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.14358/PERS.71.4.377 En ligne : https://doi.org/10.14358/PERS.71.4.377 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27296
in Photogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 4 (April 2005)[article]Updating a digital geographic database using Vehicle-borne Laser scanners and line cameras / H. Zhao in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 4 (April 2005)
[article]
Titre : Updating a digital geographic database using Vehicle-borne Laser scanners and line cameras Type de document : Article/Communication Auteurs : H. Zhao, Auteur ; Ryosuke Shibasaki, Auteur Année de publication : 2005 Article en page(s) : pp 415 - 424 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] 1:2.000
[Termes IGN] base de données localisées
[Termes IGN] caméra numérique
[Termes IGN] cartographie 3D
[Termes IGN] chambre DTC
[Termes IGN] données multitemporelles
[Termes IGN] fusion de données
[Termes IGN] géoréférencement direct
[Termes IGN] GPS-INS
[Termes IGN] instrument embarqué
[Termes IGN] milieu urbain
[Termes IGN] mise à jour de base de données
[Termes IGN] signalisation routière
[Termes IGN] système de numérisation mobile
[Termes IGN] télémètre laser terrestre
[Termes IGN] télémétrie laser terrestre
[Termes IGN] texture d'image
[Termes IGN] Tokyo (Japon)Résumé : (Auteur) The Vehicle-borne Laser Measurement System (VLMS) is a mobile mapping system where three single-row laser range scanners, six line CCD cameras, and a GPS/INS-based navigation unit are mounted on a van to measure object geometry and texture along a street. This paper contributes to a method of fusing the data output of VLMS with existing geographic data sources where the focus is on the rectification of the vehicle's motion data derived from GPS/INS, which may be quite erroneous in an urban area. An algorithm is developed to correct the four variables of the vehicle's motion data, i.e., x, y, and z coordinates of the vehicle position and yaw angle of orientation by registering the laser points of the VLMS with an existing data source, e.g., a DSM. The algorithm was examined using the VLMS data that were taken in the Ginza District, Tokyo. By manually assigning 18 sets of tie-points, the vehicle's motion data were corrected automatically and efficiently, such that the laser points of VLMS were matched to a DSM. In data fusion, a set of objects, which contained commercial signboards, traffic signs and signals, road boundaries, and road lights were extracted from the corrected VLMS data using an interface described in a previous paper. They were integrated with a 1:2500 3D map that consists of only building frames. In addition, line images from the VLMS were projected onto the building facades of the 3D Map, and textures were generated automatically. Copyright ASPRS Numéro de notice : A2005-160 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.71.4.415 En ligne : https://doi.org/10.14358/PERS.71.4.415 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27298
in Photogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 4 (April 2005) . - pp 415 - 424[article]Continuous generalization for fast and smooth visualization on small displays / Monika Sester in GIS Geo-Informations-Systeme, vol 2004 n° 9 (September 2004)
[article]
Titre : Continuous generalization for fast and smooth visualization on small displays Type de document : Article/Communication Auteurs : Monika Sester, Auteur ; Claus Brenner, Auteur Année de publication : 2004 Article en page(s) : pp 24 - 30 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] algorithme de Douglas-Peucker
[Termes IGN] généralisation à la volée
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] simplification de contour
[Termes IGN] simplification de surface
[Termes IGN] système de numérisation mobile
[Termes IGN] visualisation 3D
[Termes IGN] visualisation cartographique
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) With the increasing availability of small mobile computers, there is also an increasing demand for visualizing cartographic objects on those devices. Prominent applications are location based services in general, and car and pedestrian navigation in particular. In order to be able to offer both detail and overview of a spatial situation, the devices have to provide flexible zooming in and out in real-time. The presentation of spatial data sets in different zoom levels or resolutions is usually achieved using generalization operations. In this paper, we will describe an approach to decompose generalization methods into elementary operations that can then be implemented in a continuous way. For example in the case of displacement, an object will not simply jump from one position to the other, but slowly shifted from its original position to the new one. In the case of simplification of building ground plans, the elementary operations e.g. care for removing extrusions or intrusions of buildings, as well as offsets. Numéro de notice : A2004-404 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26931
in GIS Geo-Informations-Systeme > vol 2004 n° 9 (September 2004) . - pp 24 - 30[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 058-04091 RAB Revue Centre de documentation En réserve L003 Disponible Thales mobilemapper / J. Thurston in Geoinformatics, vol 7 n° 6 (01/09/2004)
[article]
Titre : Thales mobilemapper Type de document : Article/Communication Auteurs : J. Thurston, Auteur Année de publication : 2004 Article en page(s) : pp 62 - 65 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Topographie moderne
[Termes IGN] MobileMapper
[Termes IGN] récepteur GPS
[Termes IGN] système de numérisation mobileRésumé : (Auteur) The MobileMapper from Thales Navigation is a fullfeatured hand held global positioning system (GPS) receiver suitable for both navigation and data collection. Lightweight and compact, it comes with supporting MobileMapper Office software to provide easy to-use map and data transfer capabilities along with map review functions. The receiver includes a large backlit cotor display and ships with backdrop maps for Europe, allowing users to see where they are street names and local features are identified. MobileMapper includes several features standard options. Alternatively, there are several optional features including the ability to post-process data for increased accuracy. Numéro de notice : A2004-572 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27088
in Geoinformatics > vol 7 n° 6 (01/09/2004) . - pp 62 - 65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-04061 SL Revue Centre de documentation Revues en salle Disponible GQMAP: improving performance and productivity of mobile mapping systems through GPS quality of service / Hassan A. Karimi in Cartography and Geographic Information Science, vol 31 n° 3 (July 2004)
[article]
Titre : GQMAP: improving performance and productivity of mobile mapping systems through GPS quality of service Type de document : Article/Communication Auteurs : Hassan A. Karimi, Auteur ; Dorota A. Grejner-Brzezinska, Auteur Année de publication : 2004 Article en page(s) : pp 167 - 177 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] positionnement par GPS
[Termes IGN] qualité de service
[Termes IGN] qualité des données
[Termes IGN] récepteur GPS
[Termes IGN] système de numérisation mobileRésumé : (Auteur) Today's mobile mapping systems (MMS) benefit from an array of sensors and technologies to collect precise data on roadways. Data collected by MMS include spatial and attribute information on various objects of interest. The global positioning system (GPS), usually differentially corrected, is one of the essential positioning technologies currently used in MMS which is often integrated with other positioning technologies, such as inertial navigation systems (INS), differential odometers and digital compasses. As GPS is the most dominant positoining technology in MMS, we propose an innovative approach in using GPS in order to improve its performance and productivity, and to reduce the operational costs of MMS. To that end, we present and discuss in this paper GPS quality of service (QoS) and a novel approach called GPS QoS Map (GQMap) to reliably predict optimal data collection strategies using MMS. Numéro de notice : A2004-179 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/1523040042246007 En ligne : https://doi.org/10.1559/1523040042246007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26706
in Cartography and Geographic Information Science > vol 31 n° 3 (July 2004) . - pp 167 - 177[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-04031 RAB Revue Centre de documentation En réserve L003 Disponible Integrated mobile GIS and wireless internet map servers for environnemental monitoring and management / M.H. Tsou in Cartography and Geographic Information Science, vol 31 n° 3 (July 2004)Permalinkvol 31 n° 3 - July 2004 - Mobile mapping and Geographic Information Systems (Bulletin de Cartography and Geographic Information Science) / Cartography and geographic information societyPermalinkRedefining the paradigm of modern mobile mapping: an automated high-precision road centerline mapping system / Charles K. Toth in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 6 (June 2004)PermalinkFrom mobile mapping to telegeoinformatics: paradigm shift in geospatial data acquisition, processing, and management / Dorota A. Grejner-Brzezinska in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 2 (February 2004)PermalinkPermalinkInventory of roadside infrastructure assets: new approaches in 3-d mobile mapping and videography / C. Laflamme in Geoinformatics, vol 7 n° 1 (01/01/2004)PermalinkManual of photogrammetry, fifth edition / J. Chris Mcglone (2004)PermalinkA framework for automatic recognition of spatial features from mobile mapping imagery / Z. Tu in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 3 (March 2002)PermalinkFifth ICA workshop on progress in automated map generalization, August 2 - 4, 2001, Beijing, China / Commission on map generalization ICA (2001)PermalinkPermalink