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2011 2nd International Conference on Space Technology最新文献

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Power subsystem for small satellites with unified operational mode controller 具有统一工作模式控制器的小卫星电源分系统
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064687
Z. Váradi, Vilmos Gorócz, J. Szabó
{"title":"Power subsystem for small satellites with unified operational mode controller","authors":"Z. Váradi, Vilmos Gorócz, J. Szabó","doi":"10.1109/ICSPT.2011.6064687","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064687","url":null,"abstract":"This paper presents a novel unified three domain control unit for onboard power management in small satellite power systems. The control unit consists of several autonomous auto-oscillating MPPTs (Maximum Power Point Tracker), a CV (Constant Voltage) control and a CC (Constant Current) control of charging the battery. The introduced circuits were developed for a high reliability power subsystem with unregulated power bus topology. A combination of distributed and centralized circuits are used to provide an efficient single point failure free solution for battery charging and solar array power management.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126807807","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
Investigation of cosmic ray variations due to ionospheric irregularities 电离层不规则引起的宇宙射线变化的研究
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064656
A. Gubicza, R. Kiraly, P. Bencze, A. Bánfalvi
{"title":"Investigation of cosmic ray variations due to ionospheric irregularities","authors":"A. Gubicza, R. Kiraly, P. Bencze, A. Bánfalvi","doi":"10.1109/ICSPT.2011.6064656","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064656","url":null,"abstract":"This paper presents the Langmuir Probe experiment for the European Student Earth Orbiter (ESEO) satellite. The project is now after the design phase, the production of the final probe and the data collection hardware has been started. In this paper the theoretical background and the main engineering solutions will be discussed.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"39 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114090245","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
Optimal spectral band detection for wet farmland localization in sattelite images 卫星图像中湿农田定位的最佳光谱带检测
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064670
P. Lugonja, Dragan Letic, D. Culibrk, V. Crnojevic
{"title":"Optimal spectral band detection for wet farmland localization in sattelite images","authors":"P. Lugonja, Dragan Letic, D. Culibrk, V. Crnojevic","doi":"10.1109/ICSPT.2011.6064670","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064670","url":null,"abstract":"In this work, we compared the importance of spectral bands made by satellite detection of underground waters on the agricultural land. Precise estimation of the area affected by floods is of great importance for yield prediction and farmer's subsidies given by government agencies. As input data for our research we have used images generated by WorlView-2 satellite. The most important properties of this satellite are very high spatial resolution of 1.84m for multispectral images and four new spectral bands: coastal-blue, red-edge, yellow and near-infrared 2. High resolution of satellite is substantial for us, because our fields of interest are small parcels in Northern Serbia. For optimal spectral band detection for wet farmland we used Support Vector Machine algorithm with Gauss kernel functions. The results presented show that very good performance in wet farmland detection can be achieved with less than all 8 channels with proper selection of the most informative channels.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128033988","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
Ship detection modules based on ASAR and terassar data for Greek areas of interest 基于ASAR和terassar数据的船舶探测模块，用于希腊感兴趣的地区
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064684
V. Tsagaris, G. Vozikis, V. Anastassopoulos
{"title":"Ship detection modules based on ASAR and terassar data for Greek areas of interest","authors":"V. Tsagaris, G. Vozikis, V. Anastassopoulos","doi":"10.1109/ICSPT.2011.6064684","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064684","url":null,"abstract":"Ship detection has attracted researchers for more than a decade and is now becoming more and more mature and an operational service. In this work ship detection modules related to clutter modeling, parameter estimation and detection are employed for different types of SAR data. Namely, both ASAR and TerraSAR-X data are used and Weibull fitting is used for both cases. The suggested scheme provides reliable detection results for both cases.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127921364","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
Seismometers on the satellites of the Outer Solar System 外太阳系卫星上的地震仪
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064647
G. Bampasidis, A. Solomonidou, E. Bratsolis, K. Kyriakopoulos, X. Moussas, P. Preka-Papadema, M. Hirtzig, A. Coustenis
{"title":"Seismometers on the satellites of the Outer Solar System","authors":"G. Bampasidis, A. Solomonidou, E. Bratsolis, K. Kyriakopoulos, X. Moussas, P. Preka-Papadema, M. Hirtzig, A. Coustenis","doi":"10.1109/ICSPT.2011.6064647","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064647","url":null,"abstract":"The icy moons of the Outer Solar System are extremely interesting planetary bodies since they possess evidence about the origin and evolution of their systems and the Solar System in general. In terms of surface morphology, internal structure as well as their environmental uniqueness, Saturn's moons Titan and Enceladus and Jupiter's Europa and Io are the best representatives in that perspective. In this study, we propose a seismic experiment for the icy moons as a payload of future missions' landers. This suite of instruments comprises a gas monitoring sensor (micro Gas-Chromatograph) which will operate along with the seismic sensor. Data from the micro Gas-Chromatograph will give us the opportunity to correlate each time the recorded seismic data of the current gas-relief activity. We also suggest possible target areas with internal dynamic potential and multivariable surface expressions. Hence, it will be possible to identify active regions on the satellites, which will provide important information regarding the fluid transfer processes towards the surface as well as the presence of a subsurface liquid deposit.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121719378","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
Novell concepts for security satellite systems of OHB system AG OHB系统AG公司安全卫星系统的新概念
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064659
G. Hofschuster, F. Merkle, M. Bonerba, R. Schroder, T. Zehetbauer
{"title":"Novell concepts for security satellite systems of OHB system AG","authors":"G. Hofschuster, F. Merkle, M. Bonerba, R. Schroder, T. Zehetbauer","doi":"10.1109/ICSPT.2011.6064659","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064659","url":null,"abstract":"The paper is introducing highly optimized satellite constellations and novell concepts in the fields of security applications. They include optical Earth observation, radar Earth observation and early warning.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134292535","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
Hyperspectral image fusion using 2-D principal component analysis 基于二维主成分分析的高光谱图像融合
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064682
C. Theoharatos, V. Tsagaris, N. Fragoulis, G. Economou
{"title":"Hyperspectral image fusion using 2-D principal component analysis","authors":"C. Theoharatos, V. Tsagaris, N. Fragoulis, G. Economou","doi":"10.1109/ICSPT.2011.6064682","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064682","url":null,"abstract":"In this work, a novel fusion scheme for efficient representation of a hyperspectral dataset in an informative color image is proposed using 2D-PCA. The fusion approach is based on partitioning the hyperspectral dataset into subgroups of bands, and image covariance matrix is directly applied on the 2D matrices of each spectral band. The resulting image representation offers the ability to effectively discriminate information, providing advanced performance in terms of multiband representation. Experimental results, provided on two hyperspectral dataset acquired by CHRIS sensor and the AVIRIS instrument, demonstrate the advantage of the proposed work.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117166728","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
Centralized overload handling for satellite power subsystem 卫星动力分系统集中过载处理
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064663
G. Kocsis, Milan Trunk, L. Csurgai-Horváth
{"title":"Centralized overload handling for satellite power subsystem","authors":"G. Kocsis, Milan Trunk, L. Csurgai-Horváth","doi":"10.1109/ICSPT.2011.6064663","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064663","url":null,"abstract":"In this paper a novel approach will be shown to resolve the overload protection in satellite power subsystems. The proposed method provides an efficient solution with decreased number of components and dimensions. The principles of this system was originally developed by our group for the ESA Rosetta Lander and improved for the European Student Earth Orbiter (ESEO) project. The presented solution is implemented in the Electrical Power Subsystem (EPS) of the ESEO micro-satellite in the frame of ESA's Education Satellite Program.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120957258","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
Statistical blind classification of terrain surfaces in SAR images SAR图像中地形表面的统计盲分类
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064675
D. Mata-Moya, J. M. D. Nicolas-Presa, P. Jarabo-Amores, R. Gil-Pita
{"title":"Statistical blind classification of terrain surfaces in SAR images","authors":"D. Mata-Moya, J. M. D. Nicolas-Presa, P. Jarabo-Amores, R. Gil-Pita","doi":"10.1109/ICSPT.2011.6064675","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064675","url":null,"abstract":"In this paper, the problem of detecting and classifying different types of terrain in Synthetic Aperture Radar, SAR, images is considered. SAR data are the result of the backscattered energy from the illuminated area, so SAR images cannot be considered as optical ones and, as a consequence, automatic feature extraction represents a difficult task. Due to the amount of data that must be processed, the proposal of simple and robust solutions is a field of interest in SAR processing. In this work, a K-means based blind approach is proposed for detecting and classifying different types of terrain surfaces. The method is tested on two different detected SAR images acquired by TerraSAR-X (GEC/SE products). Results show that the proposed method is able to detect the different types of terrain present in the images: water, arid land, forest, growing and urban areas.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127590058","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
Applications of two-way satellite broadband for lifelong learning 双向卫星宽带终身学习的应用
2011 2nd International Conference on Space Technology Pub Date : 2011-11-03 DOI: 10.1109/ICSPT.2011.6064664
P. Koulouris, S. Sotiriou, M. Gargalakos, N. Uzunoglu
{"title":"Applications of two-way satellite broadband for lifelong learning","authors":"P. Koulouris, S. Sotiriou, M. Gargalakos, N. Uzunoglu","doi":"10.1109/ICSPT.2011.6064664","DOIUrl":"https://doi.org/10.1109/ICSPT.2011.6064664","url":null,"abstract":"The Rural Wings project tested the use of DVB-RCS-based satellite broadband integrated with local wireless networks, for the delivery of innovative e-learning services to remote rural communities in Europe. A number of scenarios of use were developed and implemented in more than 100 pilot sites in 12 countries across Europe and beyond, corresponding to a wide range of learning approaches and diverse learning circumstances in the various rural settings. In the light of the experiences and data gathered during the trials in the pilot sites, several aspects of the appropriateness and impact of the proposed intervention were evaluated. This paper focuses on and summarises some of the most interesting findings relating to the degree to which the deployed satellite broadband technology managed to deliver the planned e-learning activities.","PeriodicalId":376786,"journal":{"name":"2011 2nd International Conference on Space Technology","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128182038","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
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