Now showing items 1-20 of 29

  • Adaptive extremum seeking scheme for ABS control 

    Dinçmen, Erkin (IEEE, 2014)
    A sliding mode based extremum seeking algorithm is applied to the ABS control problem where the optimum slip ratio is searched online for maximum braking force in unknown road conditions. By making the parameter of the ...
  • Agile development approach for the observatory control software of the DAG 4m telescope 

    Keskin, Onur; Güçsav, Bülent; Çoker, Deniz; Yeşilyaprak, Cahit; Zago, Lorenzo; Yerli, Sinan Kaan (SPIE, 2016)
    Observatory Control Software for the upcoming 4m infrared telescope of DAG (Eastern Anatolian Observatory in Turkish) is in the beginning of its lifecycle. After the process of elicitation-validation of the initial ...
  • Automatic modulation classification for mimo systems using fourth-order cumulants 

    Öner, Mustafa Mengüç; Mühlhaus, Michael S.; Dobre, Octavia Adina; Jkel, Holger U.; Jondral, Friedrich K. (IEEE, 2012-09-03)
    Automatic classification of the modulation type of an unknown communication signal is a challenging task, with applications in both commercial and military contexts, such as spectrum surveillance, cognitive radio, and ...
  • Auxiliary free space optical communication project to ensure continuous transfer of data for DAG the 4m telescope 

    Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE, 2016)
    The continuity of the amount of data that the 4m DAG (Eastern Anatolia Observatory in Turkish) telescope will produce and transfer to Ataturk University is critical not to jeopardize the science programs. Though the fiber ...
  • Birleşik çöz/sıkıştır ve ilet tabanlı işbirlikçi çoklu erişim 

    Kaya, Onur Kağan; Güneş, Mehmet (IEEE, 2012-04-18)
    In this paper, we develop encoding and decoding strategies for a two user cooperative multiple access channel, based on the joint use of decode-forward and compress-forward techniques. We derive the resulting achievable ...
  • Coordination in building an observatory: A case study of Eastern Anatolian Observatory (DAG) 

    Şahmalı, Ali Erkan; Yeşilyaprak, Cahit; Keskin, Onur (SPIE-Int Soc Optical Engineering, 2018)
    Eastern Anatolian Observatory (DAG) is designed to build on one of the summits of Palandoken Mountains in Erzurum, Turkey, at an altitude of 3,151 meters. The building is under construction since 2015 and expected to be ...
  • DAG 4m telescope: Assembly, integration and testing 

    Pirnay, Olivier; Lousberg, Grégory P.; Gabriel, Eric; Marchiori, Gianpietro; Busatta, Andrea; Yeşilyaprak, Cahit; Keskin, Onur (SPIE-Int Soc Optical Engineering, 2018-01-01)
    AMOS with EIE as a main subcontractor, was awarded a contract in November 2014 for the design, manufacturing and installation of a 4m-class telescope for the Turkish Eastern Anatolia Observatory (DAG) situated at 3170 m ...
  • The DAG Project, a 4m class telescope: The telescope main structure Performance 

    Keskin, Onur; Marchiori, Gianpietro; Busatta, Andrea; Ghedin, L.; Marcuzzi, Enrico; Manfrin, Cristiana; Battistel, C.; Pirnay, Olivier; Flebus, Carlo; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE, 2016)
    Dogu Anatolu Gözlemevi (DAG-Eastern Anatolia Observatory) Project is a 4m class optical, near-infrared Telescope and suitable enclosure which will be located at an altitude of 3.170m in Erzurum, Turkey. The DAG telescope ...
  • DAG telescope site studies and infrastructure for possible international co-operations 

    Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan; Aliş, Sinan (Spie-Int Soc Optical Engineering, 2016)
    The selected site for the 4 m DAG (Eastern Anatolian Observatory in Turkish) telescope is at "Karakaya Ridge", at 3170 m altitude (3150 m after summit management). The telescope's optical design is performed by the DAG ...
  • DAG-TGI: Turbulence Generator Instrument for DAG (Eastern Anatolia Observatory) 

    Yeşilyaprak, Cahit; Keskin, Onur; Akbulak, Ümit Bora; Tezcan, Cihan Tuğrul; Güvenir, Furkan; Aydemir, Ömer Faruk (SPIE-Int Soc Optical Engineering, 2018-01-01)
    DAG (East Anatolia Observatory) Telescope has 4 m mirror with active optics (a0) and adaptive optics (AO) systems. In order to evaluate DAG's focal plane instruments and their installation, calibration and laboratory ...
  • DAG: A new observatory and a prospective observing site for other potential telescopes 

    Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan; Güçsav, Bülent (SPIE, 2016)
    DAG (Eastern Anatolia Observatory is read as "Dogu Anadolu Gözlemevi" in Turkish) is the newest and largest observatory of Turkey, constructed at an altitude of 3150 m in Konakll/Erzurum provenience, with an optical and ...
  • Design of a derotator for the 4 in DAG telescope 

    Baudet, Jeremie; Jolissaint, Laurent; Keskin, Onur; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE-Int Soc Optical Engineering, 2016)
    This paper Silt our work on the design of a field derotator for the adaptive optics instruments platform of DAG (Dogu Anadolu Cozier vi), a new 4 in telescope for astronomical observations near the city of krzurum, l'urkey. ...
  • The design of an adaptive optics telescope: The case of DAG 

    Keskin, Onur; Jolissaint, Laurent; Zago, Lorenzo; Yerli, Sinan Kaan; Yeşilyaprak, Cahit; Mudry, Emeric; Lousberg, Grégory P. (SPIE, 2016)
    In this paper, we describe in detail the optical design of DAG, a new 4 m telescope for Turkey. DAG is an "adaptive optics friendly" telescope, in a sense that each design decision is taken considering the potential impact ...
  • Eastern Anatolia Observatory (DAG): Recent developments 2017 

    Yeşilyaprak, Cahit; Keskin, Onur (SPIE-Int SocOptical Engineering, 2018-01-01)
    East Anatolia Observatory (DAG) is the new observatory of Turkey with the optical (VIS) and near-infrared (NIR) largest telescope (4 m mirror) and its robust observing site infrastructure. This national project consists ...
  • Eastern Anatolia Observatory (DAG): Recent developments and a prospective observing site for robotic telescopes 

    Yeşilyaprak, Cahit; Yerli, Sinan Kaan; Keskin, Onur (Universidad Nacional Autonoma Mexico Instituto Astronomia, 2016)
    This document (Eastern Anatolia Observatory (DAG) is the new observatory of Turkey with the optical and near-infrared largest telescope (4 m class) and its robust observing site infrastructure. This national project consists ...
  • A flexible adaptive optics concept for general purpose high angular resolution science on the DAG 4m telescope 

    Jolissaint, Laurent; Bouxin, Audrey; Gökay, Ulaş Sabahattin; Keskin, Onur; Rigaut, Francois; Yeşilyaprak, Cahit (SPIE-Int Soc Optical Engineering, 2018-01-01)
    Thanks to the availability of high actuator density deformable mirrors (ALPAO 468 DM), the high versatility of the pyramid wavefront sensor and above all, the venue of essentially no noise EMCCD detectors, it becomes ...
  • A global optimal control methodology and its application to a mobile robot model 

    Dinçmen, Erkin (Elsevier B.V., 2016)
    A global optimal control algorithm is developed and applied to an omni-directional mobile robot model. The aim is to search and find the most intense signal source among other signal sources in the operation region of the ...
  • In Flange Derotator Design for the 4m DAG telescope 

    Ünal, Ali Cem; Sarajlic, Mirsad; Jolissaint De Sepibus, Laurent; Keskin, Onur; Yeşilyaprak, Cahit; Baudet, Jeremie (SPIE-Int Soc Optical Engineering, 2018)
    The field rotation effect can be described as observing the gyration of an object with the pupil of the Eastern Anatolian Observatory (DAG) telescope around the optical axis under the influence of the latitude of the ...
  • Integrated opto-dynamic modeling of the 4m DAG telescope image quality performance 

    Keskin, Onur; Zago, Lorenzo; Guex, Benjamin; Yeşilyaprak, Cahit; Yerli, Sinan Kaan (SPIE, 2016)
    The Turkish DAG 4-m telescope is currently through the final design stage. It is to be located on a 3170 m mountain top in Eastern Anatolia. The telescope will be a state-of-The art device, alt-Az mount with active primary ...
  • Mechanical and thermal modeling of orthogonal turn-milling operation 

    Karagüzel, Umut; Bakkal, Mustafa; Budak, Erhan (Elsevier Science Bv, 2017)
    Turn-milling is a relatively new machining technology which is performed for cutting of symmetrical or non-symmetrical rotational parts. To improve productivity, determination of cutting parameters in turn-milling is ...