Relevant bibliographies by topics / Ephemric

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Ephemric'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Ephemric"

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Skokić, Ivica, and Roman Brajša. "ALMA SOLAR EPHEMERIS GENERATOR." Rudarsko-geološko-naftni zbornik 34, no. 2 (2019): 59–65. http://dx.doi.org/10.17794/rgn.2019.2.7.

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Jia, Rui Xi, Xiao Yu Li, Chang Feng Xia, and Dong Yang Jin. "Broadcast Ephemeris Accuracy Analysis for GPS Based on Precise Ephemeris." Applied Mechanics and Materials 602-605 (August 2014): 3667–70. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.3667.

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The accuracy of broadcast ephemeris is an important index of a satellite navigation system. The theory and method of precise ephemeris assessing broadcast ephemeris are introduced. The accuracy of GPS satellite broadcast ephemeris is assessed with the precise ones provided by IGS. The orbital coordinates of GPS broadcast ephemeris from 18th to 24th October 2013 are calculated. The analysis shows that during this time the GPS satellite broadcast ephemeris is reliable, accurate and safe as the whole, meanwhile the broadcast ephemeris accuracy is about 1 meter, better than nominal accuracy of 5 meters.
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KENNEY, RICHARD. "EPHEMERIS." Yale Review 94, no. 3 (July 2006): 125–26. http://dx.doi.org/10.1111/j.1467-9736.2006.00217.x.

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Greenhouse, Stuart. "Ephemeris." Massachusetts Review 59, no. 3 (2018): 536–37. http://dx.doi.org/10.1353/mar.2018.0080.

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Yaqin, Alamul. "SOLAR EPHEMERIS ACCORDING TO SIMON NEWCOMB." Al-Hilal: Journal of Islamic Astronomy 2, no. 2 (April 30, 2021): 287–305. http://dx.doi.org/10.21580/al-hilal.2020.2.2.6724.

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The development of Falak cannot be separated from the ephemeris table, one of them i.e Simon Newcomb solar ephemeris. This ephemeris was used in the initial calculation of Abdur Rachim, one of Falak Indonesia's experts. The purpose of this study was to determine the accuracy of the Simon Newcomb ephemeris reckoning algorithm and its strengths and weaknesses. This paper use descriptive analysis as the research methodology. The results of this study are this Ephemeris is quite accurate because because there aremany correction terms and consider aspects of the planet's relative motion to the Earth that can be seen in the formula for perturbation and nutation correction. The advantage of this ephemeris,it has a long period correction which is useful for calculating the Sun ephemeris in years far enough from the epoch used and directly uses UT time in its calculations so there is no need to convert UT to TD. The weakness of this ephemeris is that it cannot be done manually because the formula used is too long and there are many formula corrections.
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Eroshkin, G. I., N. I. Glebova, M. A. Fursenko, and A. A. Trubitsina. "Some Aspects of Constructing Long Ephemerides of the Sun, Major Planets and the Moon: Ephemeris AE95." International Astronomical Union Colloquium 165 (1997): 245–50. http://dx.doi.org/10.1017/s0252921100046625.

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The construction of long-term numerical ephemerides of the Sun, major planets and the Moon is based essentially on the high-precision numerical solution of the problem of the motion of these bodies and polynomial representation of the data. The basis of each ephemeris is a mathematical model describing all the main features of the motions of the Sun, major planets, and Moon. Such mathematical model was first formulated for the ephemerides DE/LE and was widely applied with some variations for several national ephemeris construction. The model of the AE95 ephemeris is based on the DE200/LE200 ephemeris mathematical model. Being an ephemeris of a specific character, the AE95 ephemeris is a basis for a special edition “Supplement to the Astronomical Yearbook for 1996–2000”, issued by the Institute of the Theoretical Astronomy (ITA) (Glebova et al., 1995). This ephemeris covering the years 1960–2010 is not a long ephemeris in itself but the main principles of its construction allow one to elaborate the long-term ephemeris on an IBM PC-compatible computer. A high-precision long-term numerical integration of the motion of major bodies of the Solar System demands a choice of convenient variables and a high-precision method of the numerical integration, taking into consideration the specific features of both the problem to be solved and the computer to be utilized.
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Zhao, Rui Bin, Bo Shao, Rui Li, and Zhi Gang Huang. "A Satellite Ephemeris Correction Calculating Algorithm Based on the Hill Differential Equation." Applied Mechanics and Materials 336-338 (July 2013): 1682–87. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1682.

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The Hill differential equation is used to describe the change characteristic of the ephemeris prediction error in order to calculate the satellite broadcast ephemeris error and the error change rate. After the ECEF coordinate system converses the satellite inertial coordinate system, both the satellite ephemeris correction and the correction accuracy can be calculated by the Kalman filter. When the GEO, IGSO and MEO satellites move over the China, the calculation algorithms based on the weighted least square, the velocity model of the Kalman filter and the Hill differential equation are compared in the computing performance of the ephemeris corrections by using the reference date of IGS website. The simulation results show that: the ephemeris correction solver value based on the Hill differential equation can accurately reflect the ephemeris error characteristics at the current time. And it is able to correctly reflect the perturbation impact for the satellite ephemeris error. The Hill differential equation method is more suitable at the master station for engineering application about the MEO, IGSO and GEO satellites.
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Ma, Xin, Jiancheng Fang, Xiaolin Ning, Gang Liu, and Hui Ye. "A Radio/Optical Integrated Navigation Method Based on Ephemeris Correction for an Interplanetary Probe to approach a Target Planet." Journal of Navigation 69, no. 3 (November 24, 2015): 613–38. http://dx.doi.org/10.1017/s0373463315000818.

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To obtain accurate navigation results with respect to Earth simultaneously with those with respect to the target for an interplanetary probe to approach the target planet, this paper proposes a Radio/Optical integrated navigation method based on ephemeris correction, which deeply affects the fusion accuracy. In this paper, the model of the ephemeris error is established, and taking the analytical solution of the ephemeris uncertainty as measurement, the target ephemeris error and its covariance are estimated by Kalman filter and fed back to modify the force models. By correcting the target ephemeris and using information fusion, the Radio/Optical integrated navigation prevents the ephemeris uncertainty polluting the fusion accuracy, and efficiently combines the radio and optical navigation results. The results show the influence of the ephemeris error can be removed, and the Radio/Optical integrated navigation is capable of providing accurate navigation results with respect to Earth and the target. The results demonstrate the proposed method yields an accuracy superior to the conventional method, which proves its effectiveness.
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Ning, Xiaolin, Zhuo Li, Yuqing Yang, Jiancheng Fang, and Gang Liu. "Analysis of Ephemeris Errors in Autonomous Celestial Navigation during Mars Approach Phase." Journal of Navigation 70, no. 3 (November 21, 2016): 505–26. http://dx.doi.org/10.1017/s0373463316000734.

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A Celestial Navigation System (CNS) is a feasible and economical autonomous navigation system for deep-space probes. Ephemeris errors have a great influence on the performance of CNSs during the Mars approach phase, but there are few research studies on this problem. In this paper, the analysis shows that the ephemeris error of Mars is slowly-varying, while the ephemeris error of Phobos and Deimos is periodical. The influence of the ephemeris errors of Mars and its satellites is analysed in relation to both the Sun-centred frame and the Mars-centred frame. The simulations show that the position error of a probe relative to the Sun caused by the Mars ephemeris error is almost equal to the ephemeris error itself, that the velocity error is affected slightly, and that the position and velocity relative to Mars are hardly affected. The navigation result of a Mars probe is also greatly affected by the quantities and periodicities of the ephemeris errors of Phobos and Deimos, especially that of Deimos.
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Xie, Shao Feng, Peng Fei Zhang, and Li Long Liu. "Analyzing the Precision of Chebyshev Polynomial Fitting GPS Satellite Ephemeris." Applied Mechanics and Materials 353-356 (August 2013): 3410–13. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.3410.

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Using Chebyshev polynomial to fit precise ephemeris of GPS, the nodes selection has a certain influence on the precision. In this paper we use 3 kinds of precise ephemeris ( IGF, IGR, IGU ) to analyze the difference precision of randomly selected interpolation node and Chebyshev points fitting orbit and compare the difference and precision of fitting orbit by 3 kinds of ephemeris and orbit provided by IGS. The result shows that using Chebyshev points to fit precise ephemeris, the precision of IGF and IGR can achieve mm levels, the precision of IGU can achieve cm levels.
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Dissertations / Theses on the topic "Ephemric"

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Xi, Xiaojin. "Analytical representation for ephemeris with short time-span : application to the longitude of Titan." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEO015/document.

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Les éphémérides issues d'intégrations numériques qui peuvent être facilement téléchargées des sites de l'IMCCE ou du JPL, ont une très bonne précision pour les observations récentes. En même temps, un autre type d'éphémérides, celles analytiques comme TASS, décrivent en détail le système dynamique par une représentation en combinaison de fréquences propres. Notre but est d'associer ces deux types d'éphémérides pour l'utiliser dans les études de la rotation des satellites naturelles. Cela signifie qu'il faut reconstruire des éphémérides à long terme et de haute précision montrant les caractéristiques du système comme les fréquences propres à partir des intégrations numériques. La principale difficulté est d'éviter l'intervalle de temps limité des éphémérides numériques. Dans notre travail, nous partons de la représentation des éléments d'orbite de Titan sur 10 000 ans issues de TASS comme exemple et comme standard. Nous expérimentons comment obtenir les fréquences propres sur 1000 ans d'éphémérides de TASS, et comment obtenir la représentation analytique de la longitude moyenne de Titan sur cet intervalle limité. A cause de cette durée de 1000 ans, au lieu de l'analyse en fréquence, nous utilisons la méthode des moindres carrées, en particulier pour les termes à longue période. L'efficacité et l’exactitude de l'ensemble de la méthode sont vérifiées en comparant les représentations de la longitude moyenne de Titan issue de TASS par la méthode des moindres carrées et par la représentation standard de TASS sur 10 000 ans. Finalement et c'est ce qui importe, nous obtenons une représentation du mouvement de Titan pour les 1000 ans d'éphémérides du JPL. Il existe une différence de 60 km dans l'amplitude du terme principal entre les représentations du JPL et de TASS. Cette différence est considérée comme issue du système. L'intervalle de temps limité des éphémérides influence les fréquences propres et induit des erreurs dans les termes à longues périodes comme contenant la longitude du nœud de Titan. Pour toutes les autres composantes ou presque, leurs amplitudes et phases sont similaires à celles de TASS. L'erreur de représentation est inférieure à 100 km sur 1000 ans et la déviation standard est de 26 km environ
The numerical integration ephemeris, which are convenient to download from online service of IMCCE, or Horizons of JPL have very good precision based on recent observations. Meanwhile, another kind, the analytical ephemeris like TASS, describes in detail the dynamical system by combination representation of proper frequencies. We plan to make a connection between those two different type ephemeris, that it ’s benefited us to study the rotation of natural satellites with its high precision ephemeris, those instantaneous positions, velocity, and those system characteristics like proper frequencies. The main difficulty is to avoid the shortcoming of the limited interval of observation ephemeris.In our work, we take the combination representation of Titan with 10,000 years TASS ephemeris as an example and standard. Then, we experiment to obtain both the analytical representation of the mean longitude of Titan and the proper frequencies involved in it with 1,000 years TASS ephemeris by analysis frequency. Due to limited timespan, we extend the method with a least square method, especially for the long period terms. We verify the effectiveness and exactness of the whole method in rebuilt the combination representation.Finally and most important, we get the combination representation of Titan with 1000 years JPL ephemeris. Between the solution of JPL and the representation of TASS, there exists a 60 km difference in the amplitude of the major component, that is considered as a system difference. The limited interval ephemeris makes the influence of the proper frequency, which brings the error into the long period term like the one from the node of Titan. For nearly all other components, those amplitudes and phases are similar with the relative terms of TASS. The error of our representation is less than 100 kilometres over 1,000 years and the standard deviation is about 26 kilometres
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Browne, Nathan J. James J. Light. "GPS ephemeris message broadcast simulation /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FBrowne.pdf.

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Thesis (M.S. in Systems Technology (Joint Command, Control, and Communications (C3))--Naval Postgraduate School, September 2005.
Thesis Advisor(s): Dan C. Boger. Includes bibliographical references (p. 65-67). Also available online.
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Light, James J. "GPS ephemeris message broadcast simulation." Thesis, Monterey California. Naval Postgraduate School, 2005. http://hdl.handle.net/10945/2023.

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The warfighter constantly needs increased accuracy from GPS and a means to increasing this accuracy to the decimeter level is a broadcast ephemeris message containing GPS satellite orbit and clock corrections. The ephemeris message is produced at the GPS MCS (Master Control Station) which receives GPS signal data from NGA and Air Force worldwide and uses sophisticated software to produce the orbit and clock corrections. The problem is getting the ephemeris message to the tactical user in a forward operating area. This thesis proposed a notional architecture for pushing the ephemeris message to the tactical user. It then modeled the architecture and simulated the broadcast of the ephemeris message to a tactical user using NETWARS. The baseline architecture was simulated and analyzed and then additional constraints were placed upon the network to simulate a real-world model. The simulation results demonstrated that the architecture was feasible for ephemeris message broadcast with the constraints on time intervals between broadcasts, residual traffic and message size.
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Stacey, P. "Long-term ephemeris generation for mobile devices." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1389940/.

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GPS receivers in challenging signal reception areas can find it difficult to maintain continuous signal lock for the up-to 30 seconds needed to obtain the broadcast ephemeris from the satellites. It can take many minutes for receivers to obtain the ephemeris parameters from enough satellites to obtain a position fix. As well as users expecting a rapid time-to-first-fix (TTFF) when performing a warm start, the advent of the E-911 legislature in the USA also provides motivation for rapid TTFF with accurate positions. In this thesis, a scalable orbit prediction algorithm is developed to calculate an extended ephemeris of GPS satellites of up to 7 days on a mobile device to within an accuracy of 20 m rms (radial). The algorithm numerically integrates force models from a set of initial conditions, position and velocity, determined solely from the broadcast ephemeris. Forces used include Earth gravity models of varying resolution, third-body gravity effects, solar radiation pressure, relativity, and solid Earth tides. Adding these forces improves the ephemeris accuracy at the cost of the execution time, so research is undertaken to produce ephemeris data quickly whilst maintaining similar accuracy. An orbit determination algorithm is developed that uses a least-squares technique to optimise the computed orbit over multiple sets of previously observed broadcast ephemeris data. This modifies the estimate of the initial conditions made available to the orbit predictor, which then provides a modified ephemeris which has a substantially lower root-mean-square error. The algorithm again uses a suite of force models, and only broadcast ephemeris orbit data was utilised, no other satellite ephemeris is required. Studies determining the effect of modifying the a priori weights and the number of sets of ephemeris data used for observations are undertaken and results demonstrated on a HTC TyTN II mobile device. The orbit determination technique presented in this thesis is novel, in that it utilises only broadcast ephemeris parameters previously acquired by a single GPS receiver to modify the initial position and velocity for the orbit prediction algorithm. Previous techniques used either empirical modelling or least squares techniques to modify empirical parameters of the orbit prediction algorithm.
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Silva, Gelbart Souza. "Ephemeris belli Troiani Dictys Cretensis : estudo e tradução /." São José do Rio Preto, 2019. http://hdl.handle.net/11449/182250.

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Orientador: Cláudio Aquati
Banca: Márcio Natalino Thamos
Banca: Norma Wimmer
Resumo: Neste trabalho, estudamos e traduzimos integralmente uma obra da literatura latina tardia conhecida como Ephemeris belli Troiani Dictys Cretensis (Diário da Guerra de Troia ), anônima e datável do século IV d. C. Ephemeris relata os eventos da Guerra de Troia do ponto de vista de um narrador em primeira pessoa que se apresenta como um soldado cretense de nome Díctis, alistado na tropa do comandante grego Idomeneu. A narração do prélio entre gregos e troianos, conhecida em literatura primordialmente pela leitura da Ilíada, de Homero, reveste se em Ephemeris de uma intenção racionalista ao diminuir os heróis à condição humana regular, ao diminuir a atuação dos deuses e ao estruturar a narrativa de forma lógica e cronológica. Composta de seis capítulos, precedidos por uma epístola e um prólogo, a obra é uma versão para o latim de um texto do século II originalmente em grego, o qual se encontra hoje fragmen tado. Ephemeris ganha importância no tocante à conservação do mito troiano, pois no Ocidente latino, desde o século I a. C. C., a história da Guerra de Troia era cada vez menos conhecida por intermédio dos poemas homérico e da literatura grega em geral em decorrência de uma precariedade na difusão do idioma grego por entre a elite romana. Acrescente se a esse fator a posterior e crescente pressão da Igreja que rechaçava os deuses não cristãos que habitavam a narrativa homérica. Desse modo, outras obras, compostas em latim, assumiram a transmissão da história troiana que nos...
Abstract: In this work, we study and translate integrally a late Latin work known as Ephemeris belli Troiani (Diary of the War of Troy ), anonymous and dating from the fourth century AD. Ephemeris reports the events of the Trojan War from the viewpoint of a first person narrator who presents himself as a Cretan soldier named Díctis, enlisted in the troop of the Greek com mander Idomeneu. The account of the battle between Greeks and Trojans, known in literature primarily by the reading of the Homer's Iliad, is dressed in Ephemeris of a rationalistic intention by diminishing the heroes to the regular human condition, by decr easing the performance of the gods and structuring the narrative logically and chronologically. Composed of six chapters, preceded by an epistle and a prologue, the work is a Latin version of a text of second century, written originally in Greek, which is now fragmented. Ephemeris gains importance with regard to the conservation of the Trojan myth. In the Latin West, since the first century BC, the story of Trojan War was less known through Homeric poems and Greek literature in general because of a precario usness in diffusion of the Greek language among the Roman elite. Add to this factor the later and growing pressure of the Church that rejected the polytheistic gods who inhabited the Homeric narrative. In this way other works composed in Latin assumed the transmission of the Trojan story that offered the Homeric epic. Of particular note is Ephemeris, which ...
Riassunto: In questo lavoro, studiamo e traduciamo integralmente uma opera latina conosciuta come Ephemeris belli Troiani (Diario della guerra di Troia ), anonima e risalente al secolo IV d. C. Ephemeris riporta gli eventi della guerra di Troia dal punto di vista di un narratore in prima persona che si presenta come un soldato chiamato Ditti Cretese, arruolato nell'esercito del comandante greco Idomeneo. La narrazion e del combattimento tra Greci e Troiani, nota in letteratura soprattutto per la lettura dela Iliade di Omero, si presenta in Ephemeris con un'intenzione razionalista poiché diminuire gli eroi alla condizione umana normale, ridurre il ruolo dele divinità e strutturare la narrazione in modo logico e cronologico. Composto da sei capitoli, preceduti da una lettera e un prologo, il libro è una versione latina di un testo greco del secolo II, che ora si conosce in frammenti. Ephemeris guadagni importanza per quan to riguarda la conservazione del mito troiano, perché nell'Occidente latino, dal primo secolo, la storia della guerra di Troia era sempre meno conosciuto attraverso i poemi omerici e l a letteratura greca in generale, a causa della bassa diffusione della li ngua greca tra l'elite romana. D'alt ra parte, l'ulteriore e crescente pressione della Chiesa respingeva le divinità non cristiane che abitavano la narrazione omerica. In questo modo, altre opere, composte in latino, presero la trasmissione della storia di Troia offerta dall'epopea omerica. Si distingue tra queste ...
Mestre
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Wolf, Robert. "Satellite orbit and ephemeris determination using inter satellite links." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=961611820.

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Thackrey, Keith R. "A geometric approach to determination of satellite ephemeris over a limited area." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43058.

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Range and,interferometric observations have been examined for their potential, application in a geometric approach to determination of satellite ephemeri. The approach differs from the normal (dynamic) approach in that each satellite position is treated as an independent state variable or benchmark. Programs have been developed that simulate and format the input, data for the least squares estimation routines, and perform statistical analyses of those results. Random error, tropospheric refraction errors, and atomic clock errors have been considered, and the range observation adjustment program directed to solve for clock errors.
Master of Science
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Siqueira, Loram. "Contribution of Unesp on broadcast ephemeris and PDOP monitoring for GNSS in the IGMA - Trial Project /." Presidente Prudente, 2020. http://hdl.handle.net/11449/192427.

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Orientador: João Francisco Galera Monico
Resumo: A modernização do GNSS (Global Navigation Satellite System) com a inclusão de novas constelações e melhorias nos sistemas já disponíveis foi avaliada com grande interesse na última década. A combinação de diferentes constelações de satélite expande as aplicações possíveis; portanto, o termo multi-GNSS apareceu para designar o uso desses múltiplos sistemas. O IGS (International GNSS Service), observando a necessidade dos usuários que começaram a usar o multi-GNSS, lançou em 2011 a proposta de projeto experimental IGMA (International GNSS Monitoring Assessment). O projeto visa criar um sistema internacional de análise GNSS com resultados que apresentem confiabilidade para usuários em todo o mundo. Na chamada para a participação como centro de análise a FCT-Unesp foi aceita como parte do projeto para avaliar dois dos quatro parâmetros propostos: Diluição da Precisão da Posição (PDOP) e a acurácia das efemérides transmitidas. Dos sistemas disponíveis, quatro foram escolhidos: GPS, Galileo. GLONASS e BeiDou nessa pesquisa. Foi realizado um estudo sobre o estado da arte para as aplicações de PDOP e WPDOP (Diluição da precisão ponderada na posição). Nas análises de acurácia, foi utilizado a correção entre o centro de fase e o centro de massa do satélite para comparar corretamente as efemérides finais e as transmitidas durante 600 dias (os 120 primeiros dias de cada ano entre 2015 e 2019). O GPS apresentou um RMSE 3D de 1,94 m, Galileo 1,19 m, GLONASS 7,21 m e BeiDou 3,19 m. As análi... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The modernization of GNSS (Global Navigation Satellite System) with the inclusion of new constellations and improvements in the already available systems has been assessed with great interest over the last decade. The combination of different satellite constellations expands the possible applications, so the term multi-GNSS appeared to designate the use of these multiple navigation systems. The IGS (International GNSS Service), observing the need of the users who started using multi-GNSS, launched in 2011 the proposal for the IGMA (International GNSS Monitoring Assessment) trial Project. It aims to create an international GNSS analysis system with results that present reliability for users around the world. In the call for participation as a center of analysis, FCT-Unesp was accepted as part of the trial project to evaluate the following parameters: Position Dilution of Precision (PDOP) and the accuracy of the broadcast ephemeris. Of the available systems, four were chosen: GPS, Galileo, GLONASS e BeiDou. A state-of-the-art study of PDOP and WPDOP (Weighted Position Dilution of Precision) applications was performed. On the accuracy analysis, it was used the phase center vector to correctly compare the final and broadcast ephemeris for 600 days (the first 120 days for each year between 2015 and 2019). The results show that GPS had an overall RMSE of 1.94 m, Galileo 1.94 m, GLONASS 7.21 m and BeiDou 3.19 m. The PDOP and WPDOP analyzes were carried out to evaluate the correlatio... (Complete abstract click electronic access below)
Mestre
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Lozada, Vidal C. "Space-based telescopes for the actionable refinement of ephemeris systems and test engineering." Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/10642.

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This thesis presents the results and activities related to the design, analysis, construction, test, and integration of a flight-qualified satellite, the Space-based Telescopes for the Actionable Refinement of Ephemeris (STARE) satellite. This project has been a collaboration, led by Lawrence Livermore National Laboratory (LLNL) and including the Naval Postgraduate School (NPS) and Texas AandM University. Of particular importance are the processes, experiences, and results of testing the payload and integrated STARE satellite. In addition, an analysis of testing requirements specifically appropriate for CubeSats, has been performed based on experience with larger satellites, and, finally, a thermal model has been developed for on-orbit thermal performance evaluation. The STARE satellite is currently scheduled to be a secondary payload mounted in the NPS CubeSat Launcher (NPSCuL), attached to the Atlas V Aft Bulkhead Carrier (ABC) on the Centaur upper stage. The goal of the STARE project is to improve Space Situational Awareness and, once the concept is validated, to develop a constellation that would be able to deliver highly refined optical data to improve current conjunction analysis.
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Gómez, Peinado Elísabet. "La Ephemeris Belli Troiani: edición del texto y estudio de los aspectos filológicos y literarios." Doctoral thesis, Universidad de Alicante, 2015. http://hdl.handle.net/10045/54016.

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En el siglo IV d.C. la Ephemeris belli Troiani de Lucio Septimio se presentaba, en su epistula y prologus introductorios, como una traducción latina de un original griego escrito por Dictis Cretense, que relató a modo de diario los sucesos de la guerra de Troya. Por otra parte, existían testimonios de eruditos bizantinos que hacían referencia también a este Dictis como autor de la Ephemeris belli Troiani. Sin embargo, no se tenía testimonio alguno de dicha obra griega, por lo que su existencia planteaba ciertas dudas. No fue hasta 1907 cuando, tras la publicación de un fragmento de papiro de la obra griega, se pudo constatar la existencia de dicho original griego, que vino a confirmarse más aún, si cabe, con otros tres fragmentos de papiro publicados con posterioridad. A partir de los fragmentos de papiro conservados (POxy. 4943, PTebt. 268, POxy. 2539, y POxy. 4944) podemos afirmar, en primer lugar, que la traducción latina de Lucio Septimio es libre o parafrástica, al menos en los cinco primeros libros de la obra griega, pues los restantes libros del original fueron resumidos en uno, según él mismo relata. En segundo lugar, la datación del fragmento más antiguo conservado se encuentra en torno al siglo II d.C. Por tanto, la composición del original griego estaría en torno a finales del siglo I o principios del siglo II y la gran popularidad que alcanzó dicha obra confirma su tradición abierta. La Ephemeris Belli Troiani se encuentra inmersa en el ambiente caracterizado por la Segunda Sofística, como se puede constatar en la información ofrecida por el prologus, el tratamiento de los discursos presentados en las embajadas por los caudillos griegos, etc. La novela, junto con la obra de Dares Frigio, comparten algunas características y recursos con otras novelas de temáticas variadas, como la utilización de la figura del testigo ocular, el recurso del manuscrito reencontrado, el hallazgo de la obra en una tumba, etc. que confieren mayor veracidad al relato y lo convierten en un relato “pseudohistórico”. La presentación de los sucesos de la guerra como hechos verídicos convierte la obra de Dictis en fuente literaria de la guerra de Troya, como alternativa veraz al relato homérico, para algunos eruditos bizantinos, como Malalas, cronista del siglo VI d.C. De esta manera encontramos en los bizantinos Malalas y Cedreno y en la obra anónima bizantina Eklogé episodios de los sucesos de la guerra de Troya que muestran un conocimiento de primera mano del relato de la Ephemeris Belli Troiani de Dictis. La Ephemeris Belli Troiani de Dictis Cretense y De excidio Troiae historia de Dares Frigio tuvieron trascendencia en la literatura posterior, es más, el relato que ambas obras presentaban sobre la guerra de Troya ha sobrevivido, aunque con adaptaciones, hasta nuestros días.
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Books on the topic "Ephemric"

1

Ilica, Carolina. Ephemeris: Versuri. [Bucharest]: Cartea Românească, 1987.

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Montenbruck, Oliver. Practical ephemeris calculations. Berlin: Springer-Verlag, 1989.

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Medaković, Dejan. Ephemeris: Chronique d'une famille. Lausanne, Suisse: L'Âge d'homme, 1995.

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Efemeris: Hronika jedne porodice = Ephemeris. Beograd: Beogradski izdavačko-grafički zavod, 1990.

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Uranian transneptune ephemeris: 1850-2050. Franksville, Wis: Uranian Publications, 1989.

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Efemeris: Hronika jedne porodice = Ephemeris I. 3rd ed. Beograd: Beogradski izdavačko-grafički zavod, 1991.

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Michelsen, Neil F. The American ephemeris, 1981 to 1990. San Diego, Calif: ACS Publications, 1985.

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Espenak, Fred. Twelve-year planetary ephemeris: 1995-2006. [Washington, D.C.]: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1994.

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Espenak, Fred. Twelve-year planetary ephemeris, 1995-2006. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1994.

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Michelsen, Neil F. The American sidereal ephemeris 2001-2025. 2nd ed. Exeter, NH: Starcrafts Pub., 2007.

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Book chapters on the topic "Ephemric"

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Rouan, Daniel. "Ephemeris." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_526-3.

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Rouan, Daniel. "Ephemeris." In Encyclopedia of Astrobiology, 742. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_526.

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Rouan, Daniel. "Ephemeris." In Encyclopedia of Astrobiology, 501. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_526.

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Fukushima, Toshio. "Time ephemeris." In Highlights of Astronomy, 256–57. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-010-9374-3_39.

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Granvik, Mikael, Jenni Virtanen, Karri Muinonen, Edward Bowell, Bruce Koehn, and Gonzalo Tancredi. "Transneptunian Object Ephemeris Service (tnoeph)." In The First Decadal Review of the Edgeworth-Kuiper Belt, 73–78. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-3321-2_6.

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Jovanović, B. "An Analytical Representation of Ephemeris Data." In Applications of Computer Technology to Dynamical Astronomy, 317–20. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0985-4_48.

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Gross, R. S. "Observations of the Celestial Ephemeris Pole." In Highlights of Astronomy, 232–36. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-010-9374-3_32.

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Bennett, Jim. "The First Nautical Almanac and Astronomical Ephemeris." In Historical & Cultural Astronomy, 145–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43631-5_4.

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Iubatti, Matteo, Marco Villanti, Alessandro Vanelli-Coralli, Giovanni E. Corazza, and Stephane Corazza. "Ephemeris Interpolation Techniques for Assisted GNSS Services." In Satellite Communications and Navigation Systems, 185–97. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-47524-0_14.

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Standish, E. Myles. "On the Orientation of Ephemeris Reference Frames." In Fundamental Astronomy and Solar System Dynamics, 239–42. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4688-0_3.

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Conference papers on the topic "Ephemric"

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Berry, Kevin, and Kuo-Chia Liu. "SDO Onboard Ephemeris Generation." In AIAA/AAS Astrodynamics Specialist Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-7067.

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Walter, Todd, Kazuma Gunning, and Juan Blanch. "Improved Ephemeris Monitoring for GNSS." In 2016 International Technical Meeting of The Institute of Navigation. Institute of Navigation, 2016. http://dx.doi.org/10.33012/2016.13414.

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McFafalane, Glenford A., and Joseph Skobla. "Monitoring GPS ephemeris data in Jamaica." In 2009 IEEE Aerospace conference. IEEE, 2009. http://dx.doi.org/10.1109/aero.2009.4839414.

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Yoshikawa, Makoto, Hitoshi Ikeda, Hajime Yano, Jun Saito, Takashi Kubota, Tatsuaki Hashimoto, Akira Fujiwara, et al. "Astrodynamics Science About Itokawa, Gravity and Ephemeris." In AIAA/AAS Astrodynamics Specialist Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-6658.

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Hellier, Coel, and Alan P. Smale. "An ephemeris update for X 1822–371." In The evolution of X-ray binaries. AIP, 1994. http://dx.doi.org/10.1063/1.46038.

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Park, Joon Kyu, and Kap Yong Jung. "Assessment of Positioning Accuracy by GNSS Ephemeris." In Sensor 2014. Science & Engineering Research Support soCiety, 2014. http://dx.doi.org/10.14257/astl.2014.62.21.

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Mattox, J. R., J. P. Halpern, and P. A. Caraveo. "The “COS–B/EGRET 1997” Geminga ephemeris." In The fourth compton symposium. AIP, 1997. http://dx.doi.org/10.1063/1.54131.

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Bucchioni, Giordana, and Mario Innocenti. "Ephemeris validation of Rendezvous Guidance in Lunar NRHO." In AIAA Scitech 2021 Forum. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2021. http://dx.doi.org/10.2514/6.2021-0975.

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Konyk, William. "Comparing the Timescales in Public, Precise Ephemeris Products." In 52nd Annual Precise Time and Time Interval Systems and Applications Meeting. Institute of Navigation, 2021. http://dx.doi.org/10.33012/2021.17779.

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MURROW, D., and R. JACOBSON. "Galilean satellite ephemeris improvement using Galileo tour encounter information." In Astrodynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-4249.

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Reports on the topic "Ephemric"

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Forbes, Jeffrey M. Data Assimilation for Thermospheric Density Forecasting with Application to Satellite Ephemeris Prediction. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada388709.

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