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The geopotential / F. Peng (1989)
Titre : The geopotential : modeling techniques and physical implications with case studies in the South and East China sea and Fennoscandia Type de document : Monographie Auteurs : F. Peng, Auteur Editeur : Uppsala : Uppsala University Année de publication : 1989 Collection : Acta Universitatis Upsaliensis, ISSN 0356-6485 num. 25 Importance : 146 p. Format : 17 x 24 cm ISBN/ISSN/EAN : 978-91-554-2365-0 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] anomalie de pesanteur
[Termes IGN] Chine, mer de
[Termes IGN] croute terrestre
[Termes IGN] Fennoscandie
[Termes IGN] géoïde local
[Termes IGN] gradiométrie
[Termes IGN] harmonique sphérique
[Termes IGN] lithosphère
[Termes IGN] marge continentale
[Termes IGN] modèle de géopotentiel
[Termes IGN] potentiel de pesanteur terrestreIndex. décimale : MX Mémoires divers Résumé : (Auteur) Modeling techniques and physical implications of the geopotential are examined in terms of the methods for determining the geopotential and the application of the methods to geophysical problems. Emphasis was given to the modem space methods especially SST (satellite-to-satellite tracking) and satellite gradiometry, which will become the major geopotential modeling techniques in the future. Satellite altimetry observations are used to obtain geoid anomalies for studies of lithospheric structures in selected continental margin and trench areas. The anomalous potential over a trench is interpreted in terms of a lithosphere subduction model. The positive anomalies at the landward flank of the Ryukyu Trench are partly explained by the density variations due to the subduction related thermal structure. The anomalous potential over passive continental margins is interpreted as the consequence of the deflected Moho in response to topographic surface loads. The influence of crustal structure on the anomalous potential over Fennoscandia was investigated. High correlation between the geoid anomaly and crustal thickness at intermediate wavelengths is found, supporting the argument that the crust-mantle boundary contributes significantly to the anomalous potential. Experimental results of geoid determination in the northern part of Fennoscandia using a satellite positioning technique are presented. Gravity gradients at a height of 160 km over Fennoscandia are simulated in order to examine the sensitivity requirement and recoverability of SST or satellite gradiometry. Attention is drawn to the problems in relation to the geopotential modeling and interpretation, including the notion of wavelength in spherical harmonic analysis/synthesis, and the relation between the total disturbed potential and the contributions from individual sources in the wavelength domain. Numéro de notice : 18235 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=55357 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18235-01 MX Livre Centre de documentation En réserve Mezzanine Disponible
Titre : The role of orbit errors in processing of satellite altimeter data Type de document : Rapport Auteurs : E.J.O. Schrama, Auteur Editeur : Delft : Netherlands Geodetic Commission NGC Année de publication : 1989 Collection : Netherlands Geodetic Commission Publications on Geodesy Sous-collection : New series num. 33 Importance : 170 p. Format : 20 x 28 cm ISBN/ISSN/EAN : 978-90-6132-239-9 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Technologies spatiales
[Termes IGN] altimétrie satellitaire par radar
[Termes IGN] données altimétriques
[Termes IGN] invariance
[Termes IGN] mécanique orbitale
[Termes IGN] orbitographie
[Termes IGN] pesanteur terrestre
[Termes IGN] Seasat
[Termes IGN] vitesse radialeRésumé : (auteur) The problem of radial orbit errors in processing of satellite altimeter data is largely due to the inaccuracy of the gravity model which is required for the computation of the trajectory of the spacecraft. A commonly used technique for removing these errors consists of minimizing the crossover differences of profiles measured by the altimeter radar.
Several versions of the technique of least squares crossover minimization have been investigated using either SEASAT observations or simulated data. In these adjustments coefficients of error functions are estimated which are either locally defined over short arc segments, globally over long arc segments, or continuously over an entire arc having a length of several days. The solution of the corresponding normal equations consists of a homogeneous and a particular part.
For each crossover minimization problem (CMP) the homogeneous solution is always given as an analytical expression describing the invariances of the altimetric sea surface with respect to the crossover differences. These invariances are described by a surface deformation function which is characteristic for the problem in question. The number of coefficients in this function equals to the rank defect of the normal matrix in the CMP.
For the particular solution of a local CMP (using "tilt and bias" functions) it was found that 2 non-intersecting and non-overlapping master arc segments have to be fixed. However for global chronological segmented CMP's (using 3 parameter sine-cosine functions) only 1 master arc segment needs to be fixed for a particular solution. For continuous CMP's a particular solution is found by including 9 constraint equations in the form of pseudo observation equations. In this case the error function consists of a Fourier series truncated at a cutoff frequency of 2.3 cycles per revolution including a 2 parameter function modeling a long periodic effect in the orbit.
The underlying problem of gravitational radial orbit errors is described by means of the linear perturbations theory, which is based on the Lagrange planetary equations. Additionally the problem is formulated by means of the Hill equations describing perturbed satellite motions in an idealized circular orbit. It is shown that the non-resonant particular radial solution of the Hill equations coincides with the first-order radial solution derived from the linear perturbations theory assuming a
near circular orbit.
The first-order radial solution has been compared with a simulated signal derived by numerical integration of the equations of motion. The simulated signal consists of the radial differences between two trajectories (resembling the SEASAT 3 day repeat configuration) integrated with different gravity models. It was found that the analytical orbit error model resembles closely the simulated signal after removal of a long periodic effect.
The validity of the general solutions of two global CMP's has been investigated by means of a simulation experiment. In this experiment crossover differences are simulated by means of the radial orbit error signal described above. In a second step it is attempted to reconstruct this signal by minimizing the simulated differences.
This experiment revealed that the general solution of the segmented CMP appears to be hampered by unrealistic velocity discontinuity effects of successive arc segment error functions. In addition, it fails to describe the C11 and S11 and higher degree and order components of a geographically correlated radial orbit error. This is not surprising since one can prove that the homogeneous solution of the segmented CMP (without velocity discontinuities) corresponds to the C00 and C10 component of the geographically correlated radial orbit error. For this reason the global segmented CMP is reformulated in a continuous approach where it is shown that the homogeneous solution coincides with the geographically correlated radial orbit error. Computations showed that the simulated signal deviates to approximately 15 cm r.m.s. with respect to the general solution of the continuous CMP.
Employing the latter technique 5 independent particular solutions of a radial orbit error signal have been computed from SEASAT crossover data. These solutions appear to be highly correlated and suggest the presence of a disturbing effect likely to be caused by gravity modeling errors. Additionally it was found that the individual solutions resemble a concentration of signal near the once per revolution frequency in the radial orbit error spectrum. This solution could in principle be used to improve a part of the gravity model that is used in the trajectory computation of the satellite.
In the last part an integrated approach is described where the problem of modeling errors in the orbit, the geoid and the permanent part of the sea surface topography (PST) caused by ocean circulation are considered simultaneously. It is argued that an application of the integrated approach is justified if simultaneously gravity model improvement is performed employing tracking data of other satellites at different inclinations and eccentricities. Other aspects of the integrated approach concern the modeling problems of the PST field, an omission effect of the gravity field and the relation with the global continuous CMP.Numéro de notice : 57963 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Rapport de recherche DOI : sans En ligne : https://www.ncgeo.nl/downloads/33Schrama.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=60322 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 57963-01 21.10 Livre Centre de documentation Technologies spatiales Disponible 57963-02 21.10 Livre Centre de documentation Technologies spatiales Disponible Determination of the gravity disturbance on the earth's topographic surface from airborne gravity gradient data / Y.M. Wang (1988)
Titre : Determination of the gravity disturbance on the earth's topographic surface from airborne gravity gradient data Type de document : Monographie Auteurs : Y.M. Wang, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1988 Collection : Department of Geodetic Science and Surveying Reports num. 401 Importance : 47 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] anomalie de pesanteur
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] gradiomètre
[Termes IGN] lissage de valeur
[Termes IGN] méthode des moindres carrésIndex. décimale : 30.42 Gravimétrie Numéro de notice : 12093 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54523 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 12093-01 30.42 Livre Centre de documentation Géodésie Disponible Downward continuation of the free-air gravity anomalies to the ellipsoid using the gradient solution, Poisson's integral and terrain correction-numerical comparison and the computations / Y.M. Wang (1988)
Titre : Downward continuation of the free-air gravity anomalies to the ellipsoid using the gradient solution, Poisson's integral and terrain correction-numerical comparison and the computations Type de document : Monographie Auteurs : Y.M. Wang, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1988 Collection : Department of Geodetic Science and Surveying Reports num. 393 Importance : 37 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] anomalie de pesanteur
[Termes IGN] ellipsoïde (géodésie)
[Termes IGN] méthode des moindres carrés
[Termes IGN] pesanteur terrestre
[Termes IGN] transformation de FourierIndex. décimale : 30.42 Gravimétrie Numéro de notice : 12116 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54544 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 12116-01 30.42 Livre Centre de documentation Géodésie Disponible 12116-02 30.42 Livre Centre de documentation Géodésie Disponible Proceedings, Tome 1. Theory of Integrated Geodesy and Boundary value problems, Gravity Field within the Integrated Geodesy Experiences, applications and numerical results / GGRI of Hungary academy (1988)
Titre de série : Proceedings, Tome 1 Titre : Theory of Integrated Geodesy and Boundary value problems, Gravity Field within the Integrated Geodesy Experiences, applications and numerical results Type de document : Actes de congrès Auteurs : GGRI of Hungary academy, Auteur Editeur : Sopron : GGRI of Hungary Academy Année de publication : 1988 Conférence : GGRI 1988 16/05/1988 20/05/1988 Sopron Hongrie Importance : 169 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] croute terrestre
[Termes IGN] géoïde
[Termes IGN] Global Positioning System
[Termes IGN] pesanteur terrestre
[Termes IGN] problème des valeurs limitesIndex. décimale : CG1988 Actes de congrès en 1988 Numéro de notice : 67627A Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=37123 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 67627-01A CG.88 Livre Centre de documentation En réserve M-103 Disponible Proceedings, Tome 2. Experiences, Applications and numerical results, integration of GPS, Inertial Technics and Photogrammetry, Integration of Terrestral and Satellite Networks, 4D Integrated Geodesy / GGRI of Hungary academy (1988)PermalinkRapports généraux et rapports techniques établis à l'occasion de la dix-neuvième [19ème] assemblée générale de l'AIG / Claude Boucher (1988)PermalinkSphärische Integralformeln zur Lösung des freien geodätischen Randwertproblems / W.R. Barth (1988)PermalinkAnalyse und Synthese des räumlich und zeitlich variablen Schwerefeldes mittels vektorieller Kugelflächenfunktio- nen / M. Lindlohr (1987)PermalinkCompte-rendu de l'activité du GRGS pour l'année 1986 / Claude Boucher (1987)PermalinkContributions to geodetic theory and methodology, 19th general assembly of the IUGG / International association of geodesy (1987)PermalinkDetermination of heights and height changes / H. Pelzer (1987)PermalinkDie Lithosphäre im mediterranen Raum. Ein Beitrag zu Struktur, Schwerefeld und Deformation / E. Geiss (1987)PermalinkFigure and dynamics of the Earth, Moon and planets: proceedings of the international symposium, Prague, 1986, 1. Tome 1 / P. Holota (1987)PermalinkGeophysical and geodetic requirements for global gravity field measurements 1987-2000 / National Aeronautics and Space Administration NASA (1987)PermalinkLandesbericht der Bundesrepublik Deutschland über die in den jahren 1983 bis 1987 ausgeführten geodätischen Arbeiten / K. Schnadelbach (1987)PermalinkPrecise orbit computation, gravity model adjustment and altimeter data processing for the ERS-1 altimetry mission / K.F. Wakker (1987)PermalinkStudien zur detaillierten Geoidberechnung / T. Kling (1987)PermalinkAnnales du Comité national français de géodésie et géophysique 1986 / Comité national français de géodésie et géophysique (1986)PermalinkDetermination of the local gravity field by calculations and measurements / C. Elstner (1986)PermalinkEntwurf eines nichtrelativistischen geodätisch-astronomischen Bezugssystems / Bernd Richter (1986)PermalinkPermalinkGPS Research 1985 at the Institute of Astronomical and Physical Geodesy / H. Landau (1986)PermalinkNouvelle méthode de restitution d'orbite précise et d'amélioration du champ de gravité terrestre à partir de mesures Doppler / Richard Biancale (1986)PermalinkSpace geodesy and geodynamics / A.J. Anderson (1986)PermalinkThe differential geometry of the gravity field, Minutes of the Chania Workshop / K. Katsambalos (1986)PermalinkThe Fennoscandian land uplift gravity lines 1966-1984 / J. Makinen (1986)PermalinkUntersuchungen zur Approximation des äußeren Gravitationsfeldes der Erde durch Punktmassen mit optimierten Positionen / F. Barthelmes (1986)PermalinkAnalyse de quelques méthodes de représentation du champ de gravité local / Henri Marcel Dufour (03/06/1985)PermalinkAnalyses de quelques méthodes de représentation du champ de gravité local / Henri Marcel Dufour (03/06/1985)PermalinkDu symbolisme des nombres dans l'univers / J.R. Robin in Géomètre, vol 1985 n° 2 (février 1985)PermalinkCours de physique, classe de mathématiques supérieures, 1. Electricité 1 / J. Boutigny (1985)PermalinkEin Beitrag zur harmonischen Darstellung des gezeitenerzeugenden Potentials / F. Büllesfeld (1985)PermalinkGeodesia Física / W. Heiskanen (1985)PermalinkGravity field, seismicity and tectonics of the Indian peninsula and the Himalayas / R.K. Verma (1985)PermalinkIntrinsic geodesy / A. Marussi (1985)PermalinkRelativistic effects in geodynamics / Claude Boucher (01/01/1985)PermalinkAdvances in geodesy : selected papers from reviews of geophysics and space / Erik W. Grafarend (1984)PermalinkCours de géodésie, 5. Fascicule 4 Géodésie dynamique / Jacques Le Menestrel (1984)PermalinkDarstellung des Gravitationspotentials der Erde in kartesischen Basisfunktionen / M. Jarosch (1984)PermalinkDie Arbeiten des Sonderforschungsbereiches 78 satellitengeodasie der Technischen Universität Munchen im Jahre 1983 / Manfred Schneider (1984)PermalinkEinflüsse des Schwerefeldes und der Meteorologie auf die Beobachtungen in einem lokalen Sondernetz / K. Egreder (1984)PermalinkGeopotential Research Mission (GRM) / National Aeronautics and Space Administration NASA (1984)PermalinkOptimization of geodetic operations / B. Geir Harson (1984)PermalinkProceedings of the fourth symposium of Antarctic Geosciences / T. Nagata (1984)PermalinkRapports généraux et rapports techniques établis à l'occasion de la dix-huitième [18ème] assemblée générale de l'AIG / Claude Boucher (1984)PermalinkSpaceborne gravity gradiometers / W.C. Wells (1984)PermalinkPermalinkZur Definition eines körperfesten Bezugssystems für eine deformierbare Erde und seine analytische Bewegungs- form unter dem Einfluß externer Kräfte / P. Georgiadou (1984)PermalinkPremiers résultats de mesures géodésiques avec le terramètre, appareil électronique de mesure de distances à deux longueurs d'ondes / Jean Gervaise in Géomètre, vol 1983 n° 10 (octobre 1983)PermalinkReprésentation du champ de gravité terrestre : Rapport du groupe spécial d'études 4,58 à la 18ème Assemblée générale de l'UGGI / Henri Marcel Dufour (01/08/1983)Permalinkvol 7 n°1 à 4 - March - December 1983 - IAG Symposium on marine geodesy, including sea gravimetry, [actes], Tokyo, 1982 (Bulletin de Marine geodesy)PermalinkCalcul du potentiel terrestre et de ses dérivées premières en un point de l'espace, septembre 1982, révisée juin 1983 / Eric Van Lauwe (1983)PermalinkDie Arbeiten des Sonderforschungsbereichs 78 (Satellitengeodasie) der Technischen Universität Munchen / Manfred Schneider (1983)PermalinkEin Beitrag zur Dynamik ausgedehnter Körper. Gravitationswechselwirkung / K.H. Ilk (1983)PermalinkRevue de définition DORIS / Maurice Lefebvre (1983)PermalinkTravaux sur modèles numériques de terrain, travaux sur la représentation du champ de pesanteur / Henri Marcel Dufour (1983)PermalinkUntersuchungen zur Kombination von geodätischen Punkthaufen / H. Jochemczyk (1983)PermalinkVectorial astrometry / C.A. Murray (1983)PermalinkZur Genauigkeit gravimetrisch bestimmter absoluter und relativer Geoidhöhen / B. Heck (1983)PermalinkL'expérience Medoc / F. Nouel in Bulletin d'information de l'Institut géographique national, n° 46 (octobre 1982)PermalinkLa collocation des moindres carrés / Paraskevie Mega (1982)PermalinkCours de géodesie dynamique et spatiale / Georges Balmino (1982)PermalinkGravitationswechselwirkung ausgedehnter Körper / H. Gleixner (1982)PermalinkImproved global prediction of 300-nautical mile mean free-air anomalies / J.Y. Cruz (1982)PermalinkOrbital motion / A.E. Roy (1982)PermalinkPrecise spacecraft tracking using VLBI digital tone extraction for the purpose of gravitational wave detection / A.J. Anderson (1982)PermalinkPermalinkThe role of the geoid in high precision geodesy and oceanography / Chris Rizos (1982)PermalinkRelativistic effects in inertial technology for geodesy / Claude Boucher (01/06/1981)PermalinkPhysical geodesy / W. Heiskanen (1981)PermalinkPoint de Laplace : exemple de calcul géodésique et analyse des résultats en géodésie tridimensionnelle, Volume 2. Annexe 1, programmes / Abdelmajid Ben Hadj Salem (1981)PermalinkPoint de Laplace : exemple de calcul géodésique et analyse des résultats en géodésie tridimensionnelle, Volume 3. Annexe 2, resultats / Abdelmajid Ben Hadj Salem (1981)PermalinkSimulation studies on the computation of the gravity vector in space from surface data considering the topography of the Earth / K. Katsambalos (1981)PermalinkUntersuchungen zur terrestrischen Schweregradiometrie / Günter W. Hein (1981)Permalinkvol 3 n°1 à 4 - March 1980 - Report [actes] on international symposium on interaction of marine geodesy and ocean dynamics, Miami, 10-13 October 1978 (Bulletin de Marine geodesy) / N.K. SaxenaPermalinkAdvanced physical geodesy / Helmut Moritz (1980)PermalinkDetermination of 12' x 20' Mean Free Air Gravity Anomalies for the North Sea Region / Wolfgang Torge (1980)PermalinkLa géodésie / P.L. Baetsle (1980)PermalinkGeodesy / Wolfgang Torge (1980)PermalinkPräzisionsschwerenetze und zeitliche Schwereänderungen in West-Venezuela / Hermann Drewes (1980)PermalinkThe Bruns transformation and a dual setup of geodetic observational equations / Erik W. Grafarend (1980)PermalinkMethods and geophysical applications of satellite geodesy / Kurt Lambeck in Reports on progress in physics, vol 42 n° 4 ([01/04/1979])PermalinkAlbert Einstein 1879 - 1979 relativity, quanta, and cosmology: in the development of the scientific thought of Albert Einstein, 1. Volume 1 / M. Pantaleo (1979)PermalinkAlbert Einstein 1879 - 1979 relativity, quanta, and cosmology: in the development of the scientific thought of Albert Einstein, 2. Volume 2 / M. Pantaleo (1979)PermalinkMapping the local geometry of the Earth's gravity field / W.I. Reilly (1979)PermalinkNumerical aspects of orbit computation using series of Kernel functions / H. Hauck (1979)PermalinkThe relativistic representation of the terrestrial gravity field / Claude Boucher (1979)PermalinkThe use of artificial satellites for geodesy and geodynamics, Proceedings of the second international symposium on the use of artificial satellites for geodesy and geodynamics, Athens, May 29 - June 2, 1978 / G. Veis (1979)PermalinkUne théorie de la représentation du champ terrestre / Henri Marcel Dufour (1979)PermalinkA theory of gravity field representation / Henri Marcel Dufour (1979)PermalinkAn investigation of two models for the degree variances of global covariance functions / Christopher Jekeli (1978)PermalinkBeiträge zur physikalischen Geodäsie Zusammengestellt von Erwin Groten / Erwin Groten (1978)PermalinkPossibilities of low-low satellite tracking for local geoid improvement / Jan Krynski (1978)PermalinkQuelques problèmes de rotation dans l'espace : applications en géodesie, en dynamique des solides et en planètologie / Georges Balmino (1978)PermalinkRelativistic correction to satellite Doppler observation [for Transit satellites] / Claude Boucher (01/01/1978)PermalinkNotions sur les fusées / A. Decae in Bulletin d'information de l'Institut géographique national, n° 33 (mars 1977)PermalinkCours de mécanique newtonienne, 1. 1, Théorie générale, mécanique des corps rigides / Claude Boucher (1977)PermalinkDie Arbeiten des Sonderforschungsbereiches 78 satellitengeodasie der Technischen Universität Munchen im Jahre 1976 / Manfred Schneider (1977)PermalinkDie Berechnung von anomalen vertikalen Schweregradienten hoher Präzision / Günter W. Hein (1977)Permalink