发布求助
文献互助 智能选刊 最新文献

Artificial Satellites-Journal of Planetary Geodesy最新文献

筛选
英文 中文
New High-Precision Values of the Geodetic Rotation of the Major Planets, Pluto, the Moon and the Sun 主要行星、冥王星、月球和太阳大地自转的高精度新值
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-06-01 DOI: 10.1515/arsa-2016-0006
V. Pashkevich
{"title":"New High-Precision Values of the Geodetic Rotation of the Major Planets, Pluto, the Moon and the Sun","authors":"V. Pashkevich","doi":"10.1515/arsa-2016-0006","DOIUrl":"https://doi.org/10.1515/arsa-2016-0006","url":null,"abstract":"Abstract This investigation is continuation of our studies of the geodetic (relativistic) rotation of the Solar system bodies (Eroshkin and Pashkevich, 2007) and (Eroshkin and Pashkevich, 2009). For each body (the Moon, the Sun, the major planets and Pluto) the files of the values of the components of the angular velocity of the geodetic rotation are constructed over the time span from AD1000 to AD3000 with one day spacing, by using DE422/LE422 ephemeris (Folkner, 2011), with respect to the proper coordinate systems of the bodies (Seidelmann et al., 2005). For the first time in the perturbing terms of the physical librations for the Moon and in Euler angles for other bodies of the Solar system the most essential terms of the geodetic rotation are found by means of the least squares method and spectral analysis methods.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2016-0006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67379407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Accuracy Assessment of Geostationary-Earth-Orbit with Simplified Perturbations Models 用简化摄动模型评价地球静止-地球轨道精度
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-06-01 DOI: 10.1515/arsa-2016-0005
Lihua Ma, Xiaojun Xu, F. Pang
{"title":"Accuracy Assessment of Geostationary-Earth-Orbit with Simplified Perturbations Models","authors":"Lihua Ma, Xiaojun Xu, F. Pang","doi":"10.1515/arsa-2016-0005","DOIUrl":"https://doi.org/10.1515/arsa-2016-0005","url":null,"abstract":"Abstract A two-line element set (TLE) is a data format encoding orbital elements of an Earth-orbiting object for a given epoch. Using suitable prediction formula, the motion state of the object can be obtained at any time. The TLE data representation is specific to the simplified perturbations models, so any algorithm using a TLE as a data source must implement one of these models to correctly compute the state at a specific time. Accurately adjustment of antenna direction on the earth station is the key to satellite communications. With the TLE set topocentric elevation and azimuth direction angles can be calculated. The accuracy of perturbations models directly affect communication signal quality. Therefore, finding the error variations of the satellite orbits is really meaningful. In this present paper, the authors investigate the accuracy of the Geostationary-Earth-Orbit (GEO) with simplified perturbations models. The coordinate residuals of the simplified perturbations models in this paper can give references for engineers to predict the satellite orbits with TLE.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67379309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Geometric Aspects of Ground Augmentation of Satellite Networks for the Needs of Deformation Monitoring 变形监测卫星网地面增强的几何方面
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-06-01 DOI: 10.1515/arsa-2016-0007
Elżbieta Protaziuk
{"title":"Geometric Aspects of Ground Augmentation of Satellite Networks for the Needs of Deformation Monitoring","authors":"Elżbieta Protaziuk","doi":"10.1515/arsa-2016-0007","DOIUrl":"https://doi.org/10.1515/arsa-2016-0007","url":null,"abstract":"Abstract Satellite measurements become competitive in many tasks of engineering surveys, however, in many requiring applications possibilities to apply such solutions are still limited. The possibility to widely apply satellite technologies for displacements measurements is related with new challenges; the most important of them relate to increasing requirements concerning the accuracy, reliability and continuity of results of position determination. One of the solutions is a ground augmentation of satellite network, which intention is to improve precision of positioning, ensure comparable accuracy of coordinates and reduce precision fluctuations over time. The need for augmentation of GNSS is particularly significant in situations: where the visibility of satellites is poor because of terrain obstacles, when the determined position is not precise enough or a satellites constellation does not allow for reliable positioning. Ground based source/sources of satellite signal placed at a ground, called pseudosatellites, or pseudolites were intensively investigated during the last two decades and finally were developed into groundbased, time-synchronized transceivers, that can transmit and receive a proprietary positioning signal. The paper presents geometric aspects of the ground based augmentation of the satellite networks using various quality measures of positioning geometry, which depends on access to the constellation of satellites and the conditions of the observation environment. The issue of minimizing these measures is the key problem that allows to obtain the position with high accuracy. For this purpose, the use of an error ellipsoid is proposed and compared with an error ellipse. The paper also describes the results of preliminary accuracy analysis obtained at test area and a comparison of various measures of the quality of positioning geometry.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67379589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A Monte Carlo Analysis for Collision Risk Assessment on Vega Launcher Payloads and LARES Satellite 织女星发射装置载荷与LARES卫星碰撞风险评估的蒙特卡罗分析
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-03-01 DOI: 10.1515/arsa-2016-0004
G. Sindoni, I. Ciufolini, F. Battie
{"title":"A Monte Carlo Analysis for Collision Risk Assessment on Vega Launcher Payloads and LARES Satellite","authors":"G. Sindoni, I. Ciufolini, F. Battie","doi":"10.1515/arsa-2016-0004","DOIUrl":"https://doi.org/10.1515/arsa-2016-0004","url":null,"abstract":"Abstract This work has been developed in the framework of the LARES mission of the Italian Space Agency (ASI). The LARES satellite has been built to test, with high accuracy, the frame–dragging effect predicted by the theory of General Relativity, specifically the Lense–Thirring drag of its node. LARES was the main payload in the qualification flight of the European Space Agency launcher VEGA. A concern arose about the possibility of an impact between the eight secondary payloads among themselves, with LARES and with the last stage of the launcher (AVUM). An impact would have caused failure on the payloads and the production of debris in violation of the space debris mitigation measures established internationally. As an additional contribution, this study allowed the effect of the payload release on the final manoeuvers of the AVUM to be understood.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2016-0004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The Study of Seasonal Changes of Permanent Stations Coordinates based on Weekly EPN Solutions 基于周EPN解的常设站坐标季节变化研究
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-03-01 DOI: 10.1515/arsa-2016-0001
K. Maciuk
{"title":"The Study of Seasonal Changes of Permanent Stations Coordinates based on Weekly EPN Solutions","authors":"K. Maciuk","doi":"10.1515/arsa-2016-0001","DOIUrl":"https://doi.org/10.1515/arsa-2016-0001","url":null,"abstract":"Abstract Daily and weekly coordinates solutions of GNSS permanent stations operating within EPN network allows to track long-term changes of coordinates caused e.g. by the local and global movements of tectonic plates. They are therefore an excellent tool for testing stability and repeatability of stations position. The article presents an analysis of coordinates changes of selected reference stations based on weekly EPN solutions. In addition the author proposes parameters of approximating function by assuming an existence of periodic, annually repeatable trend. The author performed also an independent fitting function for two different periods of two ITRF frames of routine time analysis and reprocessing.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2016-0001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Application of Grey Model GM(1, 1) to Ultra Short-Term Predictions of Universal Time 灰色模型GM(1,1)在世界时间超短期预测中的应用
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-03-01 DOI: 10.1515/arsa-2016-0002
Y. Lei, M. Guo, Danning Zhao, Hongbing Cai, Da-wei Hu
{"title":"Application of Grey Model GM(1, 1) to Ultra Short-Term Predictions of Universal Time","authors":"Y. Lei, M. Guo, Danning Zhao, Hongbing Cai, Da-wei Hu","doi":"10.1515/arsa-2016-0002","DOIUrl":"https://doi.org/10.1515/arsa-2016-0002","url":null,"abstract":"Abstract A mathematical model known as one-order one-variable grey differential equation model GM(1, 1) has been herein employed successfully for the ultra short-term (<10days) predictions of universal time (UT1-UTC). The results of predictions are analyzed and compared with those obtained by other methods. It is shown that the accuracy of the predictions is comparable with that obtained by other prediction methods. The proposed method is able to yield an exact prediction even though only a few observations are provided. Hence it is very valuable in the case of a small size dataset since traditional methods, e.g., least-squares (LS) extrapolation, require longer data span to make a good forecast. In addition, these results can be obtained without making any assumption about an original dataset, and thus is of high reliability. Another advantage is that the developed method is easy to use. All these reveal a great potential of the GM(1, 1) model for UT1-UTC predictions.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2016-0002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Pilot Evaluation of Integrating GLONASS, Galileo and BeiDou with GPS in Araim 格洛纳斯、伽利略和北斗系统与全球定位系统集成在阿拉姆的试点评估
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-03-01 DOI: 10.1515/arsa-2016-0003
A. el-Mowafy
{"title":"Pilot Evaluation of Integrating GLONASS, Galileo and BeiDou with GPS in Araim","authors":"A. el-Mowafy","doi":"10.1515/arsa-2016-0003","DOIUrl":"https://doi.org/10.1515/arsa-2016-0003","url":null,"abstract":"Abstract In this pilot study, availability of the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) when integrating various combinations of satellite constellations including; Galileo, GLONASS and BeiDou with GPS is investigated. The Multiple Hypothesis Solution Separation method was applied using one month of real data. The data was collected at stations of known positions, located in regions that have different coverage levels by the tested constellations. While most previous studies used simulated data, the importance of using real data is twofold. It allows for the use of actual User Range Accuracy (URA) received within the satellite navigation message, which is a fundamental component for computation of the integrity protection level; and the computation of vertical position errors to validate the integrity approach. Results show that the vertical position error was always bounded by the protection level during the test period and the ARAIM availability can reach 100% of the time when using all constellations even though some constellations are yet incomplete.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2016-0003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Study the Space Debris Impact in the Early Stages of the Nano-Satellite Design 纳米卫星设计初期空间碎片碰撞研究
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-01-01 DOI: 10.1515/arsa-2016-0014
M. Mahdi
{"title":"Study the Space Debris Impact in the Early Stages of the Nano-Satellite Design","authors":"M. Mahdi","doi":"10.1515/arsa-2016-0014","DOIUrl":"https://doi.org/10.1515/arsa-2016-0014","url":null,"abstract":"Abstract The probability of KufaSat collisions with different sizes of orbital debris and with other satellites which operating in the same orbit during orbital lifetime was determined. Apogee/Perigee Altitude History was used to graph apogee and perigee altitudes over KufaSat lifetime. The required change in velocity for maneuvers necessary to reentry atmospheric within 25 years was calculated. The prediction of orbital lifetime of KufaSat using orbital parameters and engineering specifications as inputs to the Debris Assessment Software (DAS) was done, it has been verified that the orbital lifetime will not be more than 25 years after end of mission which is compatible with recommendation of Inter-Agency Space Debris Coordination Committee (IADC).","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67380045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Ultra Short-term Prediction of Pole Coordinates via Combination of Empirical Mode Decomposition and Neural Networks 基于经验模态分解和神经网络的极坐标超短期预测
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2016-01-01 DOI: 10.1515/arsa-2016-0013
Y. Lei, Danning Zhao, Hongbing Cai
{"title":"Ultra Short-term Prediction of Pole Coordinates via Combination of Empirical Mode Decomposition and Neural Networks","authors":"Y. Lei, Danning Zhao, Hongbing Cai","doi":"10.1515/arsa-2016-0013","DOIUrl":"https://doi.org/10.1515/arsa-2016-0013","url":null,"abstract":"Abstract It was shown in the previous study that the increase of pole coordinates prediction error for about 100 days in the future is mostly caused by irregular short period oscillations. In this paper, the ultra short-term prediction of pole coordinates is studied for 10 days in the future by means of combination of empirical mode decomposition (EMD) and neural networks (NN), denoted EMD-NN. In the algorithm, EMD is employed as a low pass filter for eliminating high frequency signals from observed pole coordinates data. Then the annual and Chandler wobbles are removed a priori from pole coordinates data with high frequency signals eliminated. Finally, the radial basis function (RBF) networks are used to model and predict the residuals. The prediction performance of the EMD-NN approach is compared with that of the NN-only solution and the prediction methods and techniques involved in the Earth orientation parameters prediction comparison campaign (EOP PCC). The results show that the prediction accuracy of the EMD-NN algorithm is better than that of the NN-only solution and is also comparable with that of the other existing prediction method and techniques.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2016-0013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67379739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Orbit Design and Simulation for Kufasat Nanosatellite 库法赛特纳米卫星轨道设计与仿真
IF 0.9
Artificial Satellites-Journal of Planetary Geodesy Pub Date : 2015-12-01 DOI: 10.1515/arsa-2015-0013
M. Mahdi
{"title":"Orbit Design and Simulation for Kufasat Nanosatellite","authors":"M. Mahdi","doi":"10.1515/arsa-2015-0013","DOIUrl":"https://doi.org/10.1515/arsa-2015-0013","url":null,"abstract":"Abstract Orbit design for KufaSat Nano-satellites is presented. Polar orbit is selected for the KufaSat mission. The orbit was designed with an Inclination which enables the satellite to see every part of the earth. KufaSat has a payload for imaging purposes which require a large amount of power, so the orbit is determined to be sun synchronous in order to provide the power through solar panels. The KufaSat mission is designed for the low earth orbit. The six initial Keplerian Elements of KufaSat are calculated. The orbit design of KufaSat according to the calculated Keplerian elements has been simulated and analyzed by using MATLAB first and then by using General Mission Analysis Tool.","PeriodicalId":43216,"journal":{"name":"Artificial Satellites-Journal of Planetary Geodesy","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/arsa-2015-0013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信