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Design and performance evaluation of a novel ranging signal based on an LEO satellite communication constellation / Jingfang Su in Geo-spatial Information Science, vol 26 n° 1 (March 2023)
[article]
Titre : Design and performance evaluation of a novel ranging signal based on an LEO satellite communication constellation Type de document : Article/Communication Auteurs : Jingfang Su, Auteur ; Jia Su, Auteur ; Qingwu Yi, Auteur ; et al., Auteur Année de publication : 2023 Article en page(s) : pp 107 - 124 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] bruit blanc
[Termes IGN] orbite basse
[Termes IGN] rapport signal sur bruit
[Termes IGN] transformation de Fourier
[Termes IGN] transformation inverseRésumé : (auteur) Driven by improvements in satellite internet and Low Earth Orbit (LEO) navigation augmentation, the integration of communication and navigation has become increasingly common, and further improving navigation capabilities based on communication constellations has become a significant challenge. In the context of the existing Orthogonal Frequency Division Multiplexing (OFDM) communication systems, this paper proposes a new ranging signal design method based on an LEO satellite communication constellation. The LEO Satellite Communication Constellation Block-type Pilot (LSCC-BPR) signal is superimposed on the communication signal in a block-type form and occupies some of the subcarriers of the OFDM signal for transmission, thus ensuring the continuity of the ranging pilot signal in the time and frequency domains. Joint estimation in the time and frequency domains is performed to obtain the relevant distance value, and the ranging accuracy and communication resource utilization rate are determined. To characterize the ranging performance, the Root Mean Square Error (RMSE) is selected as an evaluation criterion. Simulations show that when the number of pilots is 2048 and the Signal-to-Noise Ratio (SNR) is 0 dB, the ranging accuracy can reach 0.8 m, and the pilot occupies only 50% of the communication subcarriers, thus improving the utilization of communication resources and meeting the public demand for communication and location services. Numéro de notice : A2023-209 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/10095020.2022.2121229 Date de publication en ligne : 17/11/2022 En ligne : https://doi.org/10.1080/10095020.2022.2121229 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103136
in Geo-spatial Information Science > vol 26 n° 1 (March 2023) . - pp 107 - 124[article]Evaluation of strategies for the ultra-rapid orbit prediction of BDS GEO satellites / Wenxi Zhao in Geo-spatial Information Science, vol 26 n° 1 (March 2023)
[article]
Titre : Evaluation of strategies for the ultra-rapid orbit prediction of BDS GEO satellites Type de document : Article/Communication Auteurs : Wenxi Zhao, Auteur ; Xiaolei Dai, Auteur ; Yidong Lou, Auteur ; et al., Auteur Année de publication : 2023 Article en page(s) : pp 16 - 30 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques orbitales
[Termes IGN] constellation BeiDou
[Termes IGN] éclipse solaire
[Termes IGN] orbite géostationnaire
[Termes IGN] orbitographie
[Termes IGN] rayonnement solaireRésumé : (auteur) The quality of BeiDou Navigation Satellite System (BDS) Geostationary Earth Orbit (GEO) ultra-rapid products is unsatisfactory because GEO satellites are nearly stationary relative to ground stations. To optimize the quality of these ultra-rapid orbit products, we investigated the effects of the fitting arc length, an a priori Solar-Radiation Pressure (SRP) model, and the along-track empirical acceleration on the prediction of BDS GEO satellite orbits. The predicted orbit arcs of 24-h were evaluated through comparisons with the corresponding observed orbit arc and Satellite Laser Ranging (SLR) observations. In both eclipse and non-eclipse seasons, accuracy of the orbit predictions obtained using a 48-h fitting arc length were better than those obtained using 24-h and 72-h fitting arc lengths. Although the overlapping precision of predicted orbits exhibited no obvious improvement when an a priori SRP model was employed, the systematic bias in the SLR residuals was significantly reduced. Specifically, the mean value of SLR residuals decreased from −0.248 m to −0.024 m during non-eclipse seasons and from −0.333 m to −0.041 m during eclipse seasons, respectively. In addition, when an empirical acceleration in the along-track direction was introduced, the three-Dimensional Root-Mean-Square (3D RMS) of overlapping orbits during eclipse seasons decreased from 2.964 to 1.080 m, which is comparable to that during non-eclipse seasons. Furthermore, the Standard Deviation (STD) of SLR residuals decreased from 0.419 to 0.221 m during eclipse seasons. The analysis of SRP estimates shows that the stability of SRP parameters was significantly enhanced after the introduction of along-track empirical acceleration in eclipse seasons. The optimal BDS GEO ultra-rapid orbit prediction products were yielded by using a 48-h fitting arc length, an a priori SRP model and an along-track empirical acceleration. Numéro de notice : A2023-182 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/10095020.2022.2071177 En ligne : https://doi.org/10.1080/10095020.2022.2071177 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102968
in Geo-spatial Information Science > vol 26 n° 1 (March 2023) . - pp 16 - 30[article]BDS and GPS side-lobe observation quality analysis and orbit determination with a GEO satellite onboard receiver / Wenwen Li in GPS solutions, vol 27 n° 1 (January 2023)
[article]
Titre : BDS and GPS side-lobe observation quality analysis and orbit determination with a GEO satellite onboard receiver Type de document : Article/Communication Auteurs : Wenwen Li, Auteur ; Kecai Jiang, Auteur ; Min Li, Auteur ; et al., Auteur Année de publication : 2023 Article en page(s) : n° 18 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques orbitales
[Termes IGN] code GNSS
[Termes IGN] orbite géostationnaire
[Termes IGN] orbite précise
[Termes IGN] orbitographie
[Termes IGN] orbitographie par GNSS
[Termes IGN] phase
[Termes IGN] positionnement par BeiDou
[Termes IGN] positionnement par GPSRésumé : (auteur) Multi-GNSS combination can alleviate problems associated with GNSS-based geostationary earth orbit (GEO) satellite navigation and orbit determination (OD), such as GNSS availability and observation geometry deterioration. However, only GPS has been widely applied and investigated in GEO missions, whereas GEO OD with BDS requires further exploration. The Chinese GEO satellite TJS-5, equipped with a GPS and BDS-compatible receiver, is the first GEO mission that tracks both BDS 2nd and 3rd generation satellites since BDS global deployment. With the TJS-5 real onboard data, we evaluate BDS side-lobe signal performance and the BDS contribution to GEO OD. Due to transmit antenna gain deficiencies in the side lobes, BDS shows a worse tracking performance than GPS with an average satellite number of 4.3 versus 7.8. Both GPS and BDS reveal inconsistency between carrier-phase and code observations, which reaches several meters and significantly degrades post-dynamic OD calculation. We estimate the consistency as a random walk process in the carrier-phase observation model to reduce its impact. With inconsistency estimated, the post-fit carrier-phase residuals decrease from 0.21 to 0.09 m for both GPS and BDS. The OD precision is significantly improved, from 1.95 to 1.42 m with only GPS and from 3.14 to 2.71 m with only BDS; the GPS and BDS combined OD exhibits the largest improvement from 1.74 to 0.82 m, demonstrating that adding BDS improves the OD precision by 43.3%. The above results indicate that the proposed carrier-phase inconsistency estimation approach is effective for both GPS and BDS and can achieve an orbit precision within 1.0 m using multi-GNSS measurements. Numéro de notice : A2023-026 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s10291-022-01358-5 Date de publication en ligne : 06/11/2022 En ligne : https://doi.org/10.1007/s10291-022-01358-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102261
in GPS solutions > vol 27 n° 1 (January 2023) . - n° 18[article]Precise orbit determination for BDS-3 GEO satellites enhanced by intersatellite links / Xiaojie Li in GPS solutions, vol 27 n° 1 (January 2023)
[article]
Titre : Precise orbit determination for BDS-3 GEO satellites enhanced by intersatellite links Type de document : Article/Communication Auteurs : Xiaojie Li, Auteur ; Xiaogong Hu, Auteur ; Rui Guo, Auteur ; et al., Auteur Année de publication : 2023 Article en page(s) : n° 8 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques orbitales
[Termes IGN] constellation BeiDou
[Termes IGN] décalage d'horloge
[Termes IGN] orbite géostationnaire
[Termes IGN] orbite précise
[Termes IGN] orbitographie
[Termes IGN] qualité des donnéesRésumé : (auteur) Geostationary orbit (GEO) satellites are an integral part of the BeiDou Navigation Satellite System (BDS). Precise orbit determination (POD) for GEO satellites is difficult due to their geostationary characteristics. The orbit determination accuracy that can be achieved based on regional tracking stations in China cannot satisfy high-precision service requirements. The third generation of BDS (BDS-3) is the first global navigation satellite system that synergistically uses regional monitoring stations and global intersatellite links (ISLs) to realize global service. In this study, the quality of ISL data is analyzed based on the residuals of the intersatellite clock offset and the observed-minus-computed residuals of the ISL data. The orbit determination accuracy is assessed based on the observation residuals, the multiday consistency of the ISL time delays, overlapping orbit comparison, the user equivalent range error (UERE), and the accuracy of the clock offset. The results show that the ISL measurement noise for the GEO satellites is 3 cm, and the multiday consistency accuracy of the ISL time delay is better than 0.07 ns. Compared to the satellite-to-ground link (SGL)-based orbit determination method, the root mean square (RMS) three-dimensional (3D) position error of the overlapping orbit differences (OODs) is improved from 1.11 to 0.22 m with the combined SGL- and ISL-based method. Simultaneously, the UERE improves from 0.57 to 0.19 m, and the accuracy of the satellite clock offset improves from 1.09 to 0.61 ns. Numéro de notice : A2023-001 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s10291-022-01330-3 Date de publication en ligne : 14/10/2022 En ligne : https://doi.org/10.1007/s10291-022-01330-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101870
in GPS solutions > vol 27 n° 1 (January 2023) . - n° 8[article]Precise onboard time synchronization for LEO satellites / Florian Kunzi in Navigation : journal of the Institute of navigation, vol 69 n° 3 (Fall 2022)
[article]
Titre : Precise onboard time synchronization for LEO satellites Type de document : Article/Communication Auteurs : Florian Kunzi, Auteur ; Oliver Montenbruck, Auteur Année de publication : 2022 Article en page(s) : n° 531 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques orbitales
[Termes IGN] données GNSS
[Termes IGN] horloge
[Termes IGN] orbite basse
[Termes IGN] orbitographie
[Termes IGN] oscillateur
[Termes IGN] récepteur DORIS
[Termes IGN] récepteur GNSS
[Termes IGN] récepteur trifréquence
[Termes IGN] synchronisation
[Termes IGN] temps réelRésumé : (auteur) Onboard time synchronization is an important requirement for a wide range of low Earth orbit (LEO) missions such as altimetry or communication services, and extends to future position, navigation, and timing (PNT) services in LEO. For GNSS-based time synchronization, continuous knowledge about the satellite’s position is required and, eventually, the quality of the position solution defines the timing precision attainable through GNSS measurements. Previous research has shown that real-time GNSS orbit determination of LEO satellites can achieve decimeter-level accuracy. This paper characterizes the performance of GNSS-based real-time clock synchronization in LEO using the satellite Sentinel-6A as a real-world case study. The satellite’s ultra-stable oscillator (USO) and triple-frequency GPS/Galileo receiver provide measurements for a navigation filter representative of real-time onboard processing. Continuous evaluation of actual flight data over 14 days shows that a 3D orbit root-mean-square (RMS) error of 11 cm and a 0.9-ns clock standard deviation can be achieved. Numéro de notice : A2022-822 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.33012/navi.531 Date de publication en ligne : 12/04/2022 En ligne : https://doi.org/10.33012/navi.531 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101991
in Navigation : journal of the Institute of navigation > vol 69 n° 3 (Fall 2022) . - n° 531[article]Evaluation of QZSS orbit and clock products for real-time positioning applications / Brian Bramanto in Journal of applied geodesy, vol 16 n° 3 (July 2022)PermalinkA new ambiguity resolution method for LEO precise orbit determination / Xingyu Zhou in Journal of geodesy, vol 96 n° 7 (July 2022)PermalinkAdaptive Kalman filter for real-time precise orbit determination of low earth orbit satellites based on pseudorange and epoch-differenced carrier-phase measurements / Min Li in Remote sensing, vol 14 n° 9 (May-1 2022)PermalinkCharacteristics of the BDS-3 multipath effect and mitigation methods using precise point positioning / Ran Lu in GPS solutions, vol 26 n° 2 (April 2022)PermalinkEffect of PCV and attitude on the precise orbit determination of Jason-3 satellite / Kai Li in Journal of applied geodesy, vol 16 n° 2 (April 2022)PermalinkLEO satellite clock analysis and prediction for positioning applications / Kan Wang in Geo-spatial Information Science, vol 25 n° 1 (March 2022)PermalinkCalibrating GNSS phase biases with onboard observations of low earth orbit satellites / Xingxing Li in Journal of geodesy, vol 96 n° 2 (February 2022)PermalinkComparison of atmospheric mass density models using a new data source: COSMIC satellite ephemerides / Yang Yang in IEEE Aerospace and Electronic Systems Magazine, vol 37 n° 2 (February 2022)PermalinkDébris spatiaux, l’inquiétante prolifération / Laurent Polidori in Géomètre, n° 2199 (février 2022)PermalinkOn-orbit BDS signals and transmit antenna gain analysis for a geostationary satellite / Meng Wang in Advances in space research, vol 69 n° 7 (April 2022)PermalinkBroadcast ephemerides for LEO augmentation satellites based on nonsingular elements / Lingdong Meng in GPS solutions, vol 25 n° 4 (October 2021)PermalinkGPS satellite differential code bias estimation with current eleven low earth orbit satellites / Xingxing Li in Journal of geodesy, vol 95 n° 7 (July 2021)PermalinkPléiades Neo, 4 satellites réactifs / Laurent Polidori in Géomètre, n° 2191 (mai 2021)PermalinkInteger phase clock method with single-satellite ambiguity fixing and its application in LEO satellite orbit determination / Kai Shao in Acta Geodaetica et Cartographica Sinica, vol 50 n° 4 ([20/04/2021])PermalinkPOD of small LEO satellites based on precise real-time MADOCA and SBAS-aided PPP corrections / Amir Allahvirdi-Zadeh in GPS solutions, vol 25 n° 2 (April 2021)PermalinkSBAS-aided GPS positioning with an extended ionosphere map at the boundaries of WAAS service area / Mingyu Kim in Remote sensing, vol 13 n° 1 (January-1 2021)PermalinkReference system origin and scale realization within the future GNSS constellation “Kepler” / Susanne Glaser in Journal of geodesy, vol 94 n° 12 (December 2020)PermalinkIntegrated processing of ground- and space-based GPS observations: improving GPS satellite orbits observed with sparse ground networks / Wen Huang in Journal of geodesy, vol 94 n° 10 (October 2020)PermalinkSensor tasking for search and catalog maintenance of geosynchronous space objects / Han Cai in Acta Astronautica, vol 175 (October 2020)PermalinkOrbit and clock analysis of BDS-3 satellites using inter-satellite link observations / Xin Xie in Journal of geodesy, vol 94 n° 7 (July 2020)PermalinkComparison of atmospheric mass density models using a new data source: COSMIC satellite ephemerides / Yang Yang (2020)PermalinkImpact of thermospheric mass density on the orbit prediction of LEO satellites / Changyong He in Space weather, vol 18 n° 1 (January 2020)PermalinkReal-time GPS satellite orbit and clock estimation based on OpenMP / Kaifa Kuang in Advances in space research, vol 63 n° 8 (15 April 2019)PermalinkImpact of predicting real-time clock corrections during their outages on precise point positioning / Ahmed El-Mowafy in Survey review, vol 51 n° 365 (March 2019)PermalinkCombined orbits and clocks from IGS second reprocessing / Jake Griffiths in Journal of geodesy, vol 93 n° 2 (February 2019)PermalinkInfluence of subdaily model for polar motion on the estimated GPS satellite orbits / Natalia Panafidina in Journal of geodesy, vol 93 n° 2 (February 2019)PermalinkEstimation of antenna phase center offset for BDS IGSO and MEO satellites / Guanwen Huang in GPS solutions, vol 22 n° 2 (April 2018)PermalinkValidation of Galileo orbits using SLR with a focus on satellites launched into incorrect orbital planes / Krzysztof Sosnica in Journal of geodesy, vol 92 n° 2 (February 2018)PermalinkDependency of geodynamic parameters on the GNSS constellation / Stefano Scaramuzza in Journal of geodesy, vol 92 n° 1 (January 2018)PermalinkPrecise orbit determination of the Fengyun-3C satellite using onboard GPS and BDS observations / Min Li in Journal of geodesy, vol 91 n° 11 (November 2017)PermalinkComparison of precise orbit determination methods of zero-difference kinematic, dynamic and reduced-dynamic of GRACE-A satellite using SHORDE software / Kai Li in Journal of applied geodesy, vol 11 n° 3 (September 2017)PermalinkPrecision on board : orbit determination of LEO satellites with real-time corrections / André Hauschild in GPS world, vol 28 n° 4 (April 2017)PermalinkPermalinkIonosphere probing with simultaneous GNSS radio occultations / Viet-Cuong Pham in GPS solutions, vol 21 n° 1 (January 2017)PermalinkAssessment of vertical TEC mapping functions for space-based GNSS observations / Jiahao Zhong in GPS solutions, vol 20 n° 3 (July 2016)PermalinkPerformance of real-time Precise Point Positioning using IGS real-time service / Mohamed Elsobeiey in GPS solutions, vol 20 n° 3 (July 2016)PermalinkStochastic modeling of triple-frequency BeiDou signals: estimation, assessment and impact analysis / Bofeng Li in Journal of geodesy, vol 90 n° 7 (July 2016)PermalinkAbsolute IGS antenna phase center model igs08.atx: status and potential improvements / Ralf Schmid in Journal of geodesy, vol 90 n° 4 (April 2016)PermalinkCODE’s new ultra-rapid orbit and ERP products for the IGS / Simon Lutz in GPS solutions, vol 20 n° 2 (April 2016)PermalinkInterferometric processing of Sentinel-1 TOPS Data / Néstor Yagüe-Martínez in IEEE Transactions on geoscience and remote sensing, vol 54 n° 4 (April 2016)PermalinkPrecise orbit determination based on raw GPS measurements / Norbert Zehentner in Journal of geodesy, vol 90 n° 3 (March 2016)PermalinkPermalinkApplication d'algorithmes génétiques à la détermination d'orbites optimales pour GRASP / Arnaud Pollet in XYZ, n° 144 (septembre - novembre 2015)PermalinkUsing ionospheric corrections from the space-based augmentation systems for low earth orbiting satellites / Jeongrae Kim in GPS solutions, vol 19 n° 3 (July 2015)PermalinkThe impact of common versus separate estimation of orbit parameters on GRACE gravity field solutions / U. Meyer in Journal of geodesy, vol 89 n° 7 (July 2015)PermalinkEstimating the short-term stability of in-orbit GNSS clocks : Following launch on GEO/GSO satellites / Dhaval Upadhyay in Inside GNSS, vol 10 n° 3 (May - June 2015)PermalinkAnalysis of orbital configurations for geocenter determination with GPS and low-Earth orbiters / Da Kuang in Journal of geodesy, vol 89 n° 5 (May 2015)PermalinkImpact of the atmospheric drag on Starlette, Stella, Ajisai, and Lares Orbits / Krzysztof Sosnica in Artificial satellites, vol 50 n° 1 (March 2015)PermalinkEvaluation and comparison of different radargrammetric approaches for Digital Surface Models generation from COSMO-SkyMed, TerraSAR-X, RADARSAT-2 imagery: Analysis of Beauport (Canada) test site / P. Capaldo in ISPRS Journal of photogrammetry and remote sensing, vol 100 (February 2015)PermalinkGalileo orbit determination using combined GNSS and SLR observations / Stefan Hackel in GPS solutions, vol 19 n° 1 (January 2015)PermalinkDetermination of precise satellite orbits and geodetic parameters using satellite laser ranging / Krzysztof Sosnica (2015)PermalinkAssessment of observing time-variable gravity from GOCE GPS and accelerometer observations / Pieter N.A.M. Visser in Journal of geodesy, vol 88 n° 11 (November 2014)PermalinkOrbit computation of the TELECOM-2D satellite with a genetic algorithm / Florent Deleflie in Proceedings of the International astronomical union, vol 9 S310 (Juillet 2014)PermalinkPrecise station positions from VLBI observations to satellites: a simulation study / Lucia Plank in Journal of geodesy, vol 88 n° 7 (July 2014)PermalinkTrajectory models and reference frames for crustal motion geodesy / Michael Bevis in Journal of geodesy, vol 88 n° 3 (March 2014)PermalinkPermalinkA technique for routinely updating the ITU-R database using radio occultation electron density profiles / Claudio Brunini in Journal of geodesy, vol 87 n° 9 (September 2013)PermalinkInformation content of very high resolution SAR images: study of feature extraction and imaging parameters / Corneliu Dimitru in IEEE Transactions on geoscience and remote sensing, vol 51 n° 8 (August 2013)PermalinkPermalinkPerformance of real-time precise point positioning / Junping Chen in Marine geodesy, vol 36 n° 1 (January - March 2013)Permalinkvol 50 n° 12 - December 2012 - Special issue on the chinese fengyun (FY)-3 satellite instrument calibration and applications (Bulletin de IEEE Transactions on geoscience and remote sensing) / Geoscience and remote sensing societyPermalinkLes premières images de Spot 6 / Astrium in Géomètre, n° 2097 (novembre 2012)PermalinkPermalinkGalileo, un système global de positionnement par satellites / Jonathan Chenal (2012)PermalinkGPS-derived orbits for the GOCE satellite / Heike Bock in Journal of geodesy, vol 85 n° 11 (November /2011)PermalinkObservation de la Terre par télédétection, 1. Fondements physiques, méthodologiques et technologiques, volume 1 / François Becker (2011)PermalinkSatellites / Michel Capderou (2011)PermalinkA study of trajectory models for satellite image triangulation / Inseong Jeong in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 3 (March 2010)PermalinkGlobal gravity field determination using the GPS measurements made onboard the low Earth orbiting satellite CHAMP / Lars Prange (2010)PermalinkMise en place d’une chaîne de calcul ultra rapide des orbites et des corrections d’horloges des satellites GLONASS / Oussama Ben Abdelaziz (2010)PermalinkGeocenter variations derived from GPS tracking of the GRACE satellites / Z. Kang in Journal of geodesy, vol 83 n° 10 (October 2009)PermalinkVariations in the accuracy of gravity recovery due to ground track variability: GRACE, CHAMP, and GOCE / J. Klokocnik in Journal of geodesy, vol 82 n° 12 (December 2008)PermalinkFormulation of distortion error for the line-of-sight (LOS) vector adjustment model and its role in restitution of SPOT imagery / Hyung-Sup Jung in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 6 (November - December 2008)PermalinkGNSS, Global Navigation Satellite Systems / Bernhard Hofmann-Wellenhof (2008)PermalinkZur Entwicklung von Bahntheorien / Enrico Mai (2008)PermalinkBringing all GNSS into line: new assistance standards embrace Galileo, Glonass, QZSS [Japanese quasi-zenith satellite system], SBAS [space-based augmentation system] / L. Wirola in GPS world, vol 18 n° 9 (September 2007)PermalinkSentinel-3, the ocean and medium-resolution land mission for GMES operational services / M. Aguirre in ESA bulletin, n° 131 (August 2007)PermalinkTidal analysis experiments with sun-synchronous satellite altimeter data / R.D. Ray in Journal of geodesy, vol 81 n° 4 (April 2007)PermalinkPseudo-stochastic orbit modeling of low earth satellites using the Global Positioning System / Adrian Jäggi (2007)PermalinkTrajectoires en consommation minimale pour le déploiement d'une formation de satellites / J.B. Thevenet (2007)PermalinkAn improved model for along track stereo sensors using rigorous orbit mechanics and navigation data / P. Michalis in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)PermalinkThermal re-emission effects on GPS satellites / J. Duha in Journal of geodesy, vol 80 n° 12 (December 2006)PermalinkDoris: from orbit determination for altimeter missions to geodesy / Pascal Willis in Comptes rendus : Géoscience, vol 338 n° 14-15 (November 2006)PermalinkThe MetOp satellite: weather information from polar orbit / P.G. Edwards in ESA bulletin, n° 127 (August 2006)PermalinkRepères de référence terrestres, rotation de la terre et télémétrie laser sur satellites / David Coulot in Géomatique expert, n° 50 (01/05/2006)PermalinkSimulations numériques de mesures laser de distance entre la Terre et une sonde en orbite autour de Mars, amélioration de la détermination du champ de gravité de la planète / Jonathan Renault (2006)PermalinkEffects of thermosphere total density pertubations on LEO Orbits during severe geomagnetic conditions (Oct-Nov 2003) using Doris and SLR data / Florent Deleflie in Advances in space research, vol 36 n° 3 (March 2005)PermalinkTerra MODIS on-orbit spatial characterization and performance / X. Xiong in IEEE Transactions on geoscience and remote sensing, vol 43 n° 2 (February 2005)PermalinkSatellites / Michel Capderou (2005)PermalinkSatellite constellation with direct radio measurements for atmospheric studies : WATS mission case / G. Alberti in International Journal of Remote Sensing IJRS, vol 25 n° 18 (September 2004)PermalinkIkonos satellite, imagery, and products / G. Dial in Remote sensing of environment, vol 88 n° 1 (30/11/2003)PermalinkOptimizing a network-based RTK method for OTF [on-the-fly] positioning / L.P. Fortes in GPS solutions, vol 7 n° 2 (August 2003)PermalinkEfficient methods for determining precise orbits of low earth orbiters using the Global Positioning System / Heike Bock (2003)PermalinkGPS : Theory, algorithms and applications / Guochang Xu (2003)PermalinkSatellites / Michel Capderou (2003)PermalinkAdaptation du modèle orbitographique Spot 4 aux satellites / J.C. Clerget (2002)PermalinkEtude de la qualité des éphémérides du satellite Landsat / C. Vergerpion (2002)PermalinkPermalinkGeodetic applications of the global navigation satellite system (GLONASS) and of GLONASS-GPS combinations / H. Habrich (2000)PermalinkModeling and validating orbits and clocks using the Global Positioning System / Tim A. Springer (2000)PermalinkA semi-analytical approach to gravity field analysis from satellite observations / Nico Sneeuw (2000)PermalinkTechniques spatiales de la géodésie DORIS, GLONASS et télémétrie laser / Pascal Willis (18/07/1999)PermalinkAnalytische Störungsrechnung mit ANALYTOS / O. Meyer (1999)PermalinkAstronomie / A. Acker (1999)PermalinkPermalinkGeophysical distributions of occultations of GPS satellites viewed from a low Earth orbiting satellite / D.M. O'Brien (1998)PermalinkTechniques & technologies des véhicules spatiaux, 1. Volume 1, Généralités et contraintes de développement / Centre national d'études spatiales (1998)PermalinkTechniques & technologies des véhicules spatiaux, 2. Volume 2, Charges utiles / Centre national d'études spatiales (1998)PermalinkTechniques & technologies des véhicules spatiaux, 3. Volume 3, Plates-formes / Centre national d'études spatiales (1998)PermalinkTheory of orbits, 2. Volume 2 Perturbative and geometrical methods / D. Boccaletti (1998)PermalinkEvaluation du nouveau modèle du Bernese software / Serge Botton in Bulletin d'information de l'Institut géographique national, n° 68 (octobre 1997)PermalinkReprocessing of about 15 months of global IGS data using improved orbit model / Serge Botton (01/04/1997)PermalinkAstronomie / Françoise Duquenne (1997)PermalinkAtlas de géographie de l'espace / Fernand Verger (1997)PermalinkInitiation à la géodésie / Henri Duquenne (1997)PermalinkThird ERS Symposium on space at the service of our environment, Florence, Italy, 14 - 21 March 1997, 3. Volume 3 / T.D. Guyenne (1997)PermalinkZur präzisen Berechnung der Oberflächenkräfte eines erdgebundenen Satelliten auf Basis der Hill-Variablen. Ein quasi-universelles Bahnintegrationsprogramm / K. Arfa-Kaboodvand (1997)PermalinkAriane, lanceur européen / J.P. Penot (1996)PermalinkCours de géodésie spatiale / Françoise Duquenne (1996)PermalinkDetermining the GPS orbit with the dynamic collocation model / L. Quanwei (1996)PermalinkIntroduction à la géodésie spatiale / Pascal Willis (1996)PermalinkTheory of orbits, 1. Volume 1 Integrable systems and non-perturbative methods / D. Boccaletti (1996)PermalinkZur Bahndynamik niedrigfliegender Satelliten / M. Scheinert (1996)PermalinkIntroduction de paramètres stochastiques pour améliorer l'estimation des trajectoires d'un système dynamique par une méthode de moindres carrés / B. Barotto (1995)PermalinkProceedings of the workshop Accurate orbit determination and observations of high Earth satellites for geodynamics / A. Elipe (1995)PermalinkLa télédétection / Michel Robin (1995)PermalinkZur analytischen Bahnberechnung künstlicher Erdsatelliten mittels konformer Transformationen / R. You (1995)PermalinkCompte rendu d'exploitation orbite précise SPOT2 (juillet - août 1994), référence CT/TI/MS/MO/94-437 / M. Deleuze (1994)PermalinkMouvement d'un satellite artificiel, 1. Mouvement Képlérien / Henri Duquenne (1994)PermalinkMouvement d'un satellite artificiel, 2. Mouvement perturbé / Henri Duquenne (1994)PermalinkParameterschätzung in dynamischen Systemen für die Satelliten-Altimetrie / G. Hückelheim (1994)PermalinkThe application of spaceborne atmospheric limb sounding and global change monitoring / W.G. Melbourne (1994)PermalinkThe first low Earth orbiter with precise GPS positioning, Topex-Poseidon / Willy I. Bertiger (1994)PermalinkCalcul du sous-réseau de la campagne Epoch'92 en colocation avec des sites DORIS / Serge Botton (1993)PermalinkInter-comparaisons GPS et Doris dans le cadre de la mission océanographique Topex-Poseidon : résultats préliminaires / Pascal Willis (1993)PermalinkOrbitographie de satellites d'altitudes 500 à 1500 kilomètres à l'aide du système de positionnement global (GPS) / J.F. Cretaux (1993)PermalinkPermanent satellite tracking networks for geodesy and geodynamics / G.L. Mader (1993)PermalinkProceedings of the IGS Analysis Center Workshop / Jan Kouba (1993)PermalinkTraitement numérique en 3D d'un couple d'images stéréo du satellite SPOT / Abdellah El-Hajjaji (1993)PermalinkAtlas de géographie de l'espace / Fernand Verger (1992)PermalinkESA ERS-1 product specifications / Agence spatiale européenne = European Space Agency (1992)PermalinkFrom Mars to Greenland / Oscar L. Colombo (1992)PermalinkImprovement of the ERS1 orbit using DORIS data on SPOT2 / M. Deleuze (1992)PermalinkEphemeridenrechnung und Bahnbestimmung geostationärer Satelliten mit Hilfe der Taylorreihenintegration / Oliver Montenbruck (1991)PermalinkOrthogonal functions over the oceans and applications to the determination of orbit error, geoid and sea surface topography from satellite altimetry / C. Hwang (1991)PermalinkThree methods for the absolute calibration of the NOAA AVHRR sensors in-flight / P.M. Teillet in Remote sensing of environment, vol 31 n° 2 (01/02/1990)PermalinkCours de télédétection, Fascicule 4. Systèmes de télédétection, géométrie des images / Patrice Foin (1990)PermalinkGPS-papers presented by the astronomical institute of the university of Berne in the years 1988 and 1989 / Gerhard Beutler (1990)PermalinkGravity field error analysis / E. Schrama (1990)PermalinkRadial orbit error reduction and sea surface topography determination using one year of Geosat altimeter data / Heiner Denker (1990)PermalinkSatellites et capteurs / Jean Cassanet (1990)PermalinkTopex-Poseidon project / M.A. Vincent (1990)PermalinkAttitude control system specifications for a remote sensing satellite / P.S. Goel in International Journal of Remote Sensing IJRS, vol 10 n° 9 (September 1989)PermalinkAVHRR image navigation : summary and review / W.J. Emery in Photogrammetric Engineering & Remote Sensing, PERS, vol 55 n° 8 (august 1989)PermalinkSpace shuttle large format camera coverage of areas in Africa : a review of the mission and the photographs acquired / J.D. Greer in Geocarto international, vol 4 n° 2 (June - August 1989)PermalinkCloud track winds in the polar regions from sequences of AVHRR images / J. Turner in International Journal of Remote Sensing IJRS, vol 10 n°4-5 (May 1989)PermalinkNOAA polar orbiting sensor system : today and tomorrow / J.K. Sparkman in International Journal of Remote Sensing IJRS, vol 10 n°4-5 (May 1989)PermalinkDétermination d'orbites de comètes pour 1990 / P. Rocher (1989)PermalinkExtensions de la théorie de Kaula aux fonctions perturbatrices luni-solaires et de marées / Pierre Exertier (1989)PermalinkModern techniques in geodesy and surveying / Nordic Geodetic Commission NGC (1989)PermalinkSPOT, des yeux braqués sur la Terre / Bernard Cervelle (1989)PermalinkThe contribution of satellite information to operational weather forcasting : achievements and objectives in the 1990's / J. Reiff in International Journal of Remote Sensing IJRS, vol 9 n°10-11 (October-November 1988)PermalinkCrossed orbit interferometry : theory and experimental results from SIR-B / A.K. Gabriel in International Journal of Remote Sensing IJRS, vol 9 n° 5 (May 1988)PermalinkFundamentals of celestial mechanics / J.M.A. Danby (1988)PermalinkGéométrie des images / Alain Baudoin (1988)PermalinkGPS - network analysis / Wojciech Pachelski (1988)PermalinkOcean tides and tectonic plate motions from LAGEOS / John M. Dow (1988)PermalinkOperational interpretation of AVHRR vegetation indices for world crop information / W.R. Philipson in Photogrammetric Engineering & Remote Sensing, PERS, vol 54 n° 1 (january 1988)PermalinkBilan du fonctionnement de SPOT 1 / G. Cales (23/11/1987)PermalinkRigorous stereophotogrammetric treatment of SPOT images / V. Kratky (23/11/1987)PermalinkA comment on Doppler FM rate / R.K. Raney in International Journal of Remote Sensing IJRS, vol 8 n° 7 (July 1987)PermalinkSize distributions of clouds in real time from satellite imagery / D.M. O'Brien in International Journal of Remote Sensing IJRS, vol 8 n° 6 (June 1987)PermalinkAn operational method using Argos orbital elements for navigation of AVHRR imagery / P. Brunel in International Journal of Remote Sensing IJRS, vol 8 n° 4 (April 1987)PermalinkA polar platform for the remote sensing needs of ecology and agriculture : a view from the U.K. / P.J. Curran in International Journal of Remote Sensing IJRS, vol 8 n° 4 (April 1987)PermalinkIn-orbit scientific calibration of Hipparcos / W.G. Tuohey in ESA journal, vol 11 n° 1 (01/01/1987)PermalinkLageos orbit decay due to infrared radiation from Earth / D.P. Rubincam (1987)PermalinkTrajectoires spatiales / Olivier Zarrouati (1987)PermalinkA contribution to 3D-operational geodesy, Part 4. The observation equations of satellite geodesy in the model of integrated geodesy / Bernd Eissfeller (1986)PermalinkEin Beitrag zur Ephemeridenrechnung und Parameterschätzung im Erde-Mond-System / H. Gleixner (1986)PermalinkGuide to GPS positioning / D. Wells (1986)PermalinkGuide des utilisateurs de données SPOT, 1. 1, Manuel de référence / Centre national d'études spatiales (1986)PermalinkGuide des utilisateurs de données SPOT, 2. 2, Guide pratique / Centre national d'études spatiales (1986)PermalinkGuide des utilisateurs de données SPOT, 3. 3, Guide pratique et annexes / Centre national d'études spatiales (1986)PermalinkDes orbites de particules dans les grands accélérateurs aux orbites des satellites artificiels / Jean Gervaise in Géomètre, vol 1985 n° 12 (décembre 1985)PermalinkGPS orbit determination using the double difference phase observable / Gerhard Beutler (04/11/1985)PermalinkPRARE microwave tracking system: overview and present state of development / H. Wilmes (04/11/1985)PermalinkLe programme SPOT : historique, objectifs, description du système et organisation générale / Gérard Brachet in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 100 (Octobre 1985)PermalinkSpécifications et vérification en vol des caractéristiques des images SPOT / G. Begni in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 100 (Octobre 1985)PermalinkSPOT : le système de télédétections par satellite / P. Fournier in Géomètre, vol 1985 n° 4 (avril 1985)PermalinkAnalyse mathématique des possibilités cartographiques du système Spot / Thierry Toutin (1985)PermalinkFirst international symposium on precise positioning with the Global Positioning System GPS Proceedings, vol 1. Proceedings / Clyde C. Goad (1985)PermalinkProceedings of the International Conference on Earth rotation and the Terrestrial Reference Frame, July 31 - August 2, 1985, Colombus, Ohio, 1. Volume 1 / Ivan I. Mueller (1985)PermalinkAltimetry, orbits and tides / Oscar L. Colombo (1984)PermalinkFormulaire de calcul d'une éphéméride de petite planète ou de comète, à partir de ses éléments osculateurs / Benoît Morando (1984)PermalinkThe calculation of the positions and velocities of the Earth during the Hipparcos mission / J. Chapront (1984)Permalink