2017 8th International Conference on Recent Advances in Space Technologies (RAST)最新文献_第2页

Microsatellite constellation for earth observation missions 用于地球观测任务的微卫星星座

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-19 DOI: 10.1109/RAST.2017.8002944

A. Sezer, Orhan Çelikkaya, B. Hassoy

引用次数: 4

Space research and extraterrestrial construction industry 空间研究和地外建筑工业

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-19 DOI: 10.1109/RAST.2017.8002938

Y. C. Toklu, Ali Erdem Çerçevik

引用次数: 1

CanSat descent control system design and implementation 卫星下降控制系统的设计与实现

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-19 DOI: 10.1109/RAST.2017.8002947

M. O. Kizilkaya, A. E. Oguz, Suleyman Soyer

引用次数: 4

Contribution of GNSS in precision agriculture GNSS对精准农业的贡献

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-19 DOI: 10.1109/RAST.2017.8002939

Muzaffer Kahvecı

{"title":"Contribution of GNSS in precision agriculture","authors":"Muzaffer Kahvecı","doi":"10.1109/RAST.2017.8002939","DOIUrl":"https://doi.org/10.1109/RAST.2017.8002939","url":null,"abstract":"Precision Agriculture Management System (PAMS) can generally be defined as the system based on the advanced navigation, information and communication technologies. In this system, instead of managing whole fields as a single unit, fields are divided into small areas and for each area different information and data related to soil and vegetation characteristics (e.g. yield, moisture, texture, structure, nutrient status, etc.) are gathered and archived in a GIS database. Use of modern technologies (ICT: Information&Communication Technologies, Remote Sensing, GIS and GNSS) in precision farming increase gradually in developed countries. Using these technologies in Turkey where numerous and scattered farming fields exist is inevitable due to its advantage in reducing the cost for labour and mineral fuels and saving time by minimizing the operation hours of machinery in the field to the minimum required. Hence, it is vital to initiate the necessary infrastructure works and support the use of GIS/GNSS in farming. Thus, establishing an effective PAMS is possible to integrate with the ICT, GNSS and GIS technologies. In this paper, PAMS concept, its necessity and components are briefly discussed. And the importance of using GNSS in an effective precision agriculture application is mentioned. Besides, GNSS infrastructure of a PAMS established by Turksat Inc. Co. in Ceylanpinar is introduced. Additionally, some cost-saving info is also given obtained from some applications previously performed in Turkey.","PeriodicalId":434418,"journal":{"name":"2017 8th International Conference on Recent Advances in Space Technologies (RAST)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128958487","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

Thermal analysis and testing of different designs of lanthanum hexaboride hollow cathodes 不同设计的六硼化镧空心阴极的热分析与测试

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-19 DOI: 10.1109/RAST.2017.8002926

Ugur Kokal, Nazli Turan, M. Çelik, H. Kurt

引用次数: 1

An UWB Vivaldi antenna with the enhanced functionalities through the use of DGS and dielectric lens 通过使用DGS和介电透镜增强功能的超宽带维瓦尔第天线

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-19 DOI: 10.1109/RAST.2017.8002989

M. A. Belen, Ilhan O. Evranos, F. Güneş, P. Mahouti

引用次数: 5

Computational analysis of orbital debris impact on spacecraft shields 轨道碎片对航天器防护罩冲击的计算分析

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-01 DOI: 10.1109/RAST.2017.8002968

Ulubilge Ulusoy, Seher Eken

引用次数: 0

Satellite image encryption method based on AES-CTR algorithm and GEFFE generator 基于AES-CTR算法和GEFFE生成器的卫星图像加密方法

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-01 DOI: 10.1109/RAST.2017.8002953

E. Bensikaddour, Y. Bentoutou, N. Taleb

引用次数: 14

Adaptive backstepping control for microsatellite under inertia uncertainties 惯性不确定性下的微卫星自适应反演控制

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-01 DOI: 10.1109/RAST.2017.8002962

H. Boussadia, A. M. Si Mohammed, N. Boughanmi, A. Bellar

引用次数: 2

A comparative study of segmentation quality for multi-resolution segmentation and watershed transform 多分辨率分割与分水岭变换分割质量的比较研究

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-01 DOI: 10.1109/RAST.2017.8002984

T. Kavzoglu, H. Tonbul

{"title":"A comparative study of segmentation quality for multi-resolution segmentation and watershed transform","authors":"T. Kavzoglu, H. Tonbul","doi":"10.1109/RAST.2017.8002984","DOIUrl":"https://doi.org/10.1109/RAST.2017.8002984","url":null,"abstract":"Object-Based Image Analysis (OBIA) has gained swift popularity in remote sensing area mainly due to the increasing availability of very high resolution imagery. Image segmentation is a major step within OBIA process. Image segmentation quality remarkably influences the subsequent image classification accuracy. It is necessary to implement advanced and robust methods to increase image segmentation quality that is generally measured by several accuracy metrics including Area Fit Index (AFI and Quality Rate (Qr). In this study, two widely-used segmentation algorithms, namely region-based multi-resolution segmentation and edge-based watershed transform were applied to a very high resolution imagery acquired by VorldView-2 sensor to evaluate and compare their performance in terms of segmentation quality metrics. Totally five segmentation goodness metrics, namely under-segmentation, over-segmentation, root means square, AFI and Qr were applied through the manually digitized reference objects available on the imagery. ENVI and eCognition Developer software packages were used to perform watershed transform and multi-resolution segmentation algorithms, respectively. Nearest neighbor classification method was applied and related accuracy assessment was conducted in two software platforms. Results showed that multi-resolution segmentation was superior (about 18% higher in terms of AFI) compared to watershed transform in the delineation of segments of reference objects. Also, higher classification accuracies (about 5%) were achieved by the use of multi-resolution segmentation.","PeriodicalId":434418,"journal":{"name":"2017 8th International Conference on Recent Advances in Space Technologies (RAST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125582974","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: 25