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Gauss-Markov model with random parameters to adjust results of surveys of geodetic control networks / Marek Banas in Reports on geodesy and geoinformatics, vol 111 n° 1 (June 2021)  

Public [article]  inReports on geodesy and geoinformatics > vol 111 n° 1 (June 2021) Titre : Gauss-Markov model with random parameters to adjust results of surveys of geodetic control networks Type de document : Article/Communication Auteurs : Marek Banas, Auteur ; Jozef Czaja, Auteur ; Janusz Dabrowski, Auteur Année de publication : 2021 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] matrice de covariance [Termes IGN] modèle de Gauss-Markov [Termes IGN] point de nivellement [Termes IGN] réseau de contrôle Résumé : (auteur) Alignment of an engineering object project in the field is always conducted at the points of the geodetic control network, the coordinates of which are determined on the basis of the results of its elements survey and with connection to the national spatial reference system. The points of the national spatial reference system determined on the basis of previous surveys have specified coordinates with adequate accuracy, which is included in their covariance matrix. The coordinates of the geodetic control network points are determined more accurately than the points of the national spatial reference system and this means that the results of surveys of the geodetic control network have to be adequately incorporated into the coordinates of the reference points. In order to perform this incorporation, it may be assumed that the coordinates of the reference points are random, that is, they have a covariance matrix, which should be used in the process of adjusting the results of the geodetic control network observation. This research paper presents the principles for the estimation of the Gauss-Markov model parameters applied in case of those geodetic control networks in which the coordinates of the reference points have random character. On the basis of the observation equations δ + AX = L for the geodetic control network and using the weighting matrix P and the matrix of conditional covariances (P−1 + ACXAT) for the observation vector L, the parameter vector X is estimated in the form of the derived formula X^=(CX−1+ATPA)−1ATP⋅L . The verification of these estimation principles has been illustrated by the example of a fragment of a levelling geodetic control network consisting of three geodetic control points and two reference points of the national spatial reference system. The novel feature of the proposed solution is the application of covariance matrices of the reference point coordinates to adjust the results of the survey of geodetic control networks and to determine limit standard deviations for the estimated coordinates of geodetic control network points. Numéro de notice : A2021-780 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.2478/rgg-2021-0001 En ligne : https://doi.org/10.2478/rgg-2021-0001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98797 [article]

The efficiency of different outlier detection approaches in geodetic networks: case study for Pobednik statue / Mehmed Batilović in Geodetski vestnik, vol 62 n° 2 (June 2018)  

Public [article]  inGeodetski vestnik > vol 62 n° 2 (June 2018) . - pp 293 - 305 Titre : The efficiency of different outlier detection approaches in geodetic networks: case study for Pobednik statue Type de document : Article/Communication Auteurs : Mehmed Batilović, Auteur ; Zoran Sušić, Auteur ; Marko Z. Marković, Auteur ; Marijana Vujinović, Auteur ; Gojko Nikolić, Auteur ; Toša Ninkov, Auteur Année de publication : 2018 Article en page(s) : pp 293 - 305 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Topographie [Termes IGN] Belgrade [Termes IGN] fortification [Termes IGN] méthode robuste [Termes IGN] réseau de contrôle [Termes IGN] valeur aberrante Résumé : (auteur) In the paper, the efficacy of two different approaches for outlier detection in geodetic networks is analysed on a test example of a control network for geodetic monitoring of the Pobednik statue in the Kalemegdan Fortress in Belgrade by applying the mean success rate (MSR). Conventional tests and robust methods were applied for detecting outliers. The experimental results indicate that the new approach based on original observations provides higher efficiency of the applied methods than the classical approach for outlier detection in geodetic networks. Numéro de notice : A2018-253 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.15292/geodetski-vestnik.2018.02.293-305 En ligne : https://doi.org/10.15292/geodetski-vestnik.2018.02.293-305 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90314 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
139-2018021	RAB	Revue	Centre de documentation	En réserve L003	Disponible

EGNOS monitoring prepared in Space Research Centre P.A.S. for SPMS project / Anna Swiatek in Artificial satellites, vol 52 n° 4 (December 2017)  

Public [article]  inArtificial satellites > vol 52 n° 4 (December 2017) . - pp 109 - 120 Titre : EGNOS monitoring prepared in Space Research Centre P.A.S. for SPMS project Type de document : Article/Communication Auteurs : Anna Swiatek, Auteur ; Leszek Jaworski, Auteur ; Lukasz Tomasik, Auteur Année de publication : 2017 Article en page(s) : pp 109 - 120 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes IGN] European Geostationary Navigation Overlay Service [Termes IGN] Pologne [Termes IGN] réseau de contrôle Résumé : (auteur) The European Geostationary Overlay Service (EGNOS) augments Global Positioning System (GPS) by providing correction data and integrity information for improving positioning over Europe. EGNOS Service Performance Monitoring Support (SPMS) project has assumed establishment, maintenance and implementation of an EGNOS performance monitoring network. The paper presents preliminary results of analyses prepared in Space Research Centre, Polish Academy of Sciences (Warsaw), as one of partners in SPMS project. Numéro de notice : A2017-857 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1515/arsa-2017-0010 Date de publication en ligne : 27/12/2017 En ligne : https://doi.org/10.1515/arsa-2017-0010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89816 [article]

The current state of the creation and modernization of national geodetic and cartographic resources in Poland / Adam Doskocz in Open geosciences, vol 8 n° 1 (January - July 2016)  

Public [article]  inOpen geosciences > vol 8 n° 1 (January - July 2016) . - pp 579 - 592 Titre : The current state of the creation and modernization of national geodetic and cartographic resources in Poland Type de document : Article/Communication Auteurs : Adam Doskocz, Auteur Année de publication : 2016 Article en page(s) : pp 579 - 592 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes IGN] base de données foncières [Termes IGN] cadastre étranger [Termes IGN] carte topographique [Termes IGN] grande échelle [Termes IGN] Pologne [Termes IGN] réseau de contrôle [Termes IGN] réseau géodésique local Résumé : (auteur) All official data are currently integrated and harmonized in a spatial reference system. This paper outlines a national geodetic and cartographic resources in Poland. The national geodetic and cartographic resources are an important part of the spatial information infrastructure in the European Community. They also provide reference data for other resources of Spatial Data Infrastructure (SDI), including: main and detailed geodetic control networks, base maps, land and buildings registries, geodetic registries of utilities and topographic maps. This paper presents methods of producing digital map data and technical standards for field surveys, and in addition paper also presents some aspects of building Global and Regional SDI. Numéro de notice : A2016--073 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/POSITIONNEMENT Nature : Article DOI : 10.1515/geo-2016-0059 En ligne : https://doi.org/10.1515/geo-2016-0059 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84419 [article]

Image matching of satellite data based on quadrilateral control networks / A. Sedaghat in Photogrammetric record, vol 27 n° 140 (December 2012 - February 2013)  

Public [article]  inPhotogrammetric record > vol 27 n° 140 (December 2012 - February 2013) . - pp 423 - 442 Titre : Image matching of satellite data based on quadrilateral control networks Type de document : Article/Communication Auteurs : A. Sedaghat, Auteur ; H. Ebadi, Auteur ; M. Mokhtazarde, Auteur Année de publication : 2012 Article en page(s) : pp 423 - 442 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] appariement d'images [Termes IGN] coin réflecteur [Termes IGN] détection de coins Harris [Termes IGN] point d'appui [Termes IGN] réseau de contrôle [Termes IGN] SIFT (algorithme) Résumé : (Auteur) Automatic image matching of satellite data is a difficult process due to the complex characteristics of such image pairs, including significant translation, rotation, scaling and illumination differences. A new method is proposed where, initially, a pre-registration is performed to coarsely align the input and reference images. Next, a dense set of corner points are extracted using the Harris operator. The strongest conjugate corner points are determined and the accuracy is improved by using least squares matching to construct a precise braced quadrilateral control network in the two images. Once the consistency of the established network pairs has been determined, it is used as a framework to match the remaining corner points. Comprehensive evaluations of the proposed method on a variety of image pairs from different sensors prove its efficiency with sub-pixel positional accuracy. Numéro de notice : A2012-625 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2012.00699.x Date de publication en ligne : 11/10/2012 En ligne : https://doi.org/10.1111/j.1477-9730.2012.00699.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32071 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
106-2012041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Validation of the SMOS L2 soil moisture data in the REMEDHUS network (Spain) / N. Sanchez in IEEE Transactions on geoscience and remote sensing, vol 50 n° 5 Tome 1 (May 2012)  

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Using GPS to control a triangulation network / V. Ashkenazi in Survey review, vol 29 n° 228 (01/04/1988)  

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GPS surveying as an effective tool for establishment of control networks / J.D. Cain (10/06/1987)

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An introduction to the geodetic control network and surveying in China / H. Ping (29/03/1987)

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Integrated 3D-adjustment of the SW Finland test net with the FAF Munich Opera 2.3 software / Günter W. Hein (1987)

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The automatic generation of approximations for horizontal control networks / A.P. Vonderohe in Surveying and Mapping, vol 46 n° 4 (01/12/1986)

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International Federation of Surveyors FIG Proceedings "Survey Control Networks", Meeting of Study Group 5B, 7th-9th July, 1982, Aalborg University Centre, Denmark / Kai Borre (1982)

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Investigations on geodetic applications of satellite doppler observations for control networks / Claude Boucher (22/01/1979)

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Optimization of design and computation of control networks, [Actes du Symposium International] / F. Halmos (1979)

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Applications of laser ranging and VLBI observations for selenodetic control / F.A. Fajemirokun (1971)

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