Détail de l'auteur
Auteur Charles K. Toth |
Documents disponibles écrits par cet auteur



Redefining 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)
[article]
Titre : Redefining the paradigm of modern mobile mapping: an automated high-precision road centerline mapping system Type de document : Article/Communication Auteurs : Charles K. Toth, Auteur ; Dorota A. Grejner-Brzezinska, Auteur Année de publication : 2004 Article en page(s) : pp 685 - 694 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes descripteurs IGN] axe médian
[Termes descripteurs IGN] capteur imageur
[Termes descripteurs IGN] centrale inertielle
[Termes descripteurs IGN] chambre de prise de vue numérique
[Termes descripteurs IGN] GPS-INS
[Termes descripteurs IGN] lever direct
[Termes descripteurs IGN] positionnement par GPS
[Termes descripteurs IGN] précision centimétrique
[Termes descripteurs IGN] réseau routier
[Termes descripteurs IGN] système de numérisation mobile
[Termes descripteurs IGN] temps réelRésumé : (Auteur) A high-precision land-based integrated mapping system has been developed at The Ohio State University to support road centerline mapping operations at the Ohio Department of Transportation District & Office. The system represents a transition from the traditional mobile mapping paradigm towards a highly automated and autonomous design following the trends of modem geoinformatics. The two key components of the custom-designed system are a high-precision integrated GPS-INS navigation system and a fully digital and automated imaging subsystem. The van-based mapping system was designed to deliver the road centerline positions at subdecimeter accuracy in a highly automated manner with limited human interaction in near real time. The paper presents the system's concept and design, followed by an individual performance evaluation of the navigation and imaging components; and finally road test results, representing an operational environment, are also reported. Copyright ASPRS Numéro de notice : A2004-203 Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26730
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 6 (June 2004) . - pp 685 - 694[article]Réservation
Réserver ce documentExemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 105-04061 RAB Revue Centre de documentation En réserve 3L Disponible 105-04062 RAB Revue Centre de documentation En réserve 3L Disponible GPS + INS + pseudolites: an integrated positioning system / Y. Yi in GPS world, vol 14 n° 7 (July 2003)
[article]
Titre : GPS + INS + pseudolites: an integrated positioning system Type de document : Article/Communication Auteurs : Y. Yi, Auteur ; Dorota A. Grejner-Brzezinska, Auteur ; Charles K. Toth, Auteur ; et al., Auteur Année de publication : 2003 Article en page(s) : pp 42 - 49 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes descripteurs IGN] GPS assisté pour la navigation (technologies)
[Termes descripteurs IGN] GPS-INS
[Termes descripteurs IGN] positionnement cinématique en temps réel
[Termes descripteurs IGN] pseudolite
[Termes descripteurs IGN] signal GPS
[Termes descripteurs IGN] véhicule automobileRésumé : (Auteur) Kinematic positioning has become a standard GPS technique for precision navigation that supports surveying and mapping systems. One application for which the high accuracy and reliability of kinematic positioning are required is mobile mapping, whose market has significantly expanded in the past 10 years. Inertial navigation systems (INS) normally augment GPS to provide continuous and accurate trajectory and attitude information from the imaging sensors of mobile mapping systems. GPS contributes high accuracy and long-term stability (with properly resolved integer ambiguities and no losses of lock) and provides a means of error estimation for the INS sensor. A GPS-calibrated INS provides reliable bridging during GPS outages and supports ambiguity resolution after the CPS signal lock is re-established. Thus, high navigation accuracy normally can be achieved even if GPS signals are subject to occasional block-ages. But what if GPS signals are lost for extended periods of time or the visible constellation is limited to four or fewer satellites, which can often happen in urban canyons? Pseudo-satellites (pseudolites) may be the answer. This month's column discusses an experimental GPS/INS/pseudolite system, with special emphasis on the error spectrum and the navigation performance analysis based on a medium-accuracy and highly reliable INS, limited GPS constellation availability, and a varying number of pseudolites. It also describes simulated and actual pseudolite data in typical noisy environments and analyses their impact on navigation accuracy. Copyright Advanstar Communications Numéro de notice : A2003-441 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26520
in GPS world > vol 14 n° 7 (July 2003) . - pp 42 - 49[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 067-03071 RAB Revue Centre de documentation En réserve 3L Disponible
Titre : Experiences with frame CCD arrays and direct georeferencing Type de document : Article/Communication Auteurs : Charles K. Toth, Auteur Congrès : PW 1999, 47th Photogrammetric Week (20 - 24 septembre 1999; Stuttgart, Allemagne), Commanditaire Editeur : Karlsruhe, Heidelberg, ... : Wichmann Année de publication : 20/09/1999 Importance : pp 95 - 107 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes descripteurs IGN] chambre DTC
[Termes descripteurs IGN] chambre métrique
[Termes descripteurs IGN] étalonnage de chambre métrique
[Termes descripteurs IGN] GPS-INS
[Termes descripteurs IGN] orientation du capteur
[Termes descripteurs IGN] système de numérisation mobileRésumé : (Auteur) The rapid technological developments of the 90's have completely redefined the mapping practice as a whole. In less than a decade, digital techniques have come to outnumber the traditionally analog data acquisition and processing methods. Supported by unprecedented demand for large-volume, accurate spatial data, these new digital techniques emerged as dominant mapping technologies by the end of the decade. Technological change has also recently reached the analog camera-based aerial surveying practice, which supplies about two-thirds of spatial data for mapping and was the last stronghold of analog techniques. Two key components of this emerging technology are the electronic sensor-based digital camera and GPS/INS-based direct platform orientation. In fact, these new platform orientation systems are rapidly becoming a core component of modern airborne mapping and remote sensing systems.
This paper investigates the calibration and performance validation aspects of a GPS/INS/CM prototype system, including the digital camera calibration and the boresighting misalignment calibration of the positioning component. The calibration performance of the system is evaluated based on data collected during several test flights.Numéro de notice : C1999-065 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65829 Sensor integration for improved surface modelling: DEM extraction from high-resolution digital imagery and laser altimetry / Charles K. Toth in GIM international, vol 13 n° 6 (June 1999)
[article]
Titre : Sensor integration for improved surface modelling: DEM extraction from high-resolution digital imagery and laser altimetry Type de document : Article/Communication Auteurs : Charles K. Toth, Auteur ; Dorota A. Grejner-Brzezinska, Auteur Année de publication : 1999 Article en page(s) : pp 42 - 45 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes descripteurs IGN] données laser
[Termes descripteurs IGN] modèle numérique de surface
[Termes descripteurs IGN] télémétrie laser aéroportéNuméro de notice : A1999-125 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26325
in GIM international > vol 13 n° 6 (June 1999) . - pp 42 - 45[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 061-99061 SL Revue Centre de documentation Revues en salle Disponible