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Browsing Elektrik - Elektronik Mühendisliği / Electrical and Electronics Engineering by Author "Demirkol, Aşkın"

Browsing Elektrik - Elektronik Mühendisliği / Electrical and Electronics Engineering by Author "Demirkol, Aşkın"

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  • A new classification approach using discriminant functions 
    Demirkol, Aşkın; Demir, Zafer; Emre, Erol (INST INFORMATION SCIENCE, 2005)
    In this study, an approach involving new types of cost functions is given for the construction of discriminant functions. Centers of mass, not specified a priori, around feature vectors are clustered using cost function. ...
  • A system theoretic approach to array processing 
    Demirkol, Aşkın; Demir, Zafer; Erol, Emre (NATL INST OPTOELECTRONICS, 2015)
    In this paper, utilizing system theoretic concepts a sound, rigorous theory of array processing is established which leads to several new results. MUSIC, MIN-NORM, ESPRIT, and PISARENKO used for both spatial and temporal ...
  • A unifying approach to track-to-track correlation for multisensor fusion for multiple targets 
    Demirkol, Aşkın; Demir, Zafer; Emre, Erol (NATL INST OPTOELECTRONICS, 2015)
    In this paper, a global modeling approach was proposed for multi sensor fusion problems. Once the global model was investigated considering the data association and fusion, it is adapted to track to track correlation problem ...
  • Active sensor imaging by wavelet and Gabor theories 
    Demirkol, Aşkın (TAYLOR & FRANCIS LTD, 2008)
    In the present paper, two new algorithms are studied by taking advantage of time frequency analysis techniques. Wavelet and Gabor theories are applied to active imaging by sensors such as radars. This is achieved by ...
  • An ambiguity function aided target density function for radar imaging 
    R. F. Cinar; Demirkol, Aşkın; Demir, Zafer (NATL INST OPTOELECTRONICS, 2015)
    This paper investigates a new approach to target density functions for active sensor imaging. The data obtained from a phased array radar system is processed by the newly developed technique. In order to reconstruct the ...
  • Angle density functions for active sensor imaging 
    Demirkol, Aşkın; Demir, Zafer; Emre, Erol (INST ENGINEERING TECHNOLOGY-IET, 2009)
    A new target density function (TDF) is proposed for active sensor imaging. The TDF, called the angle density function, is studied by utilising the angular distribution of targets at a fixed range. Active sensor imaging ...
  • Buried underground archaeological structures investigation with electrical method: diyarbakir Ulu Mosque (Turkey) 
    Karavul, Can; Nihan Arig; T. Fikret Kurnaz; Demirkol, Aşkın (NATL INST OPTOELECTRONICS, 2015)
    The study area used as a temple during the pre-Christianity term, Mar Thoma Church after the adoption of Christianity and currently used as The Ulu Mosque. The most important feature of this mosque which has hosted many ...
  • Energy efficiency with an application container 
    Ozmen Emre Demirkol; Demirkol, Aşkın (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2018)
    Efficient use of energy is an issue that the information technology (IT) world gives prominence to both in academia and industry. Cloud computing and the Internet of things, today's most popular subjects, make the efficient ...
  • Estimation of antioxidant activity of foods using artificial neural networks 
    Cerit, İnci; Ayse Yildirim; Uçar, Muhammed Kürşad; Demirkol, Aşkın; Coşansu Akdemir, Serap; Demirkol, Omca (VUP FOOD RESEARCH INST, BRATISLAVA, 2017)
    The aim of this study was to demonstrate that artificial neural networks (ANN) is an economical and rapid method to estimate antioxidant activity of foods. Phenolic content of different food varieties (red pepper and grape ...
  • Estimation of target density functions in time-varying environments 
    Demirkol, Aşkın; Emre, Erol (TAYLOR & FRANCIS LTD, 2011)
    In this article, two different solutions are presented to the problem of estimation of time-varying range-angle in nonstationary environments. The first one utilizes a wideband signal with a certain bandlimitedness condition ...