Browsing by Author "Arıkan, Orhan"
Now showing items 21-40 of 223
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A Bayesian approach to respiration rate estimation via pulse-based ultra-wideband signals
(IEEE, 2009)In this paper, theoretical limits on estimation of respiration rates via pulse-based ultra-wideband (UWB) signals are studied in the presence of prior information about respiration related signal parameters. First, a ... -
Bilgisayarlı iyonosfer tomografisinde açılım işlevlerinin ve yeniden yapılandırma algoritmalarının model üzerinden karşılaştırılması
(IEEE, 2005-05)Bilgisayarlı İyonosfer Tomografisi (BİT), iyonosfer elektron yoğunluğunun iki boyutlu veya üç boyutlu olarak görüntülenmesi için kullanılan bir yöntemdir. Bu yöntem özellikle iyonosfer fiziği veya uydu haberleşmesi gibi ... -
Büyük ölçekli doğrusal denklem sistemleri için hızlı ve gürbüz çözüm teknikleri
(IEEE, 2019-04)Büyük ölçekli doğrusal sistemlerin veri matrisi, sütunlar arası yüksek ilintiye ve genellikle yüksek durum numaralarına sahiptir. Bilinmeyenlerin, ölçümlerden En Küçük Kareler (EKK) tekniğiyle üretilmesi, ölçüm gürültüsünün, ... -
Classification of intra-pulse modulation of radar signals by feature fusion based convolutional neural networks
(IEEE, 2018)Detection and classification of radars based on pulses they transmit is an important application in electronic warfare systems. In this work, we propose a novel deep-learning based technique that automatically recognizes ... -
Classification of regional ionospheric disturbance based on machine learning techniques
(European Space Agency, 2016)In this study, Total Electron Content (TEC) estimated from GPS receivers is used to model the regional and local variability that differs from global activity along with solar and geomagnetic indices. For the automated ... -
Comparison of the CAF-DF and sage algorithms in multipath channel parameter estimation
(IEEE, 2008-07)In this paper, performance of the recently proposed Cross Ambiguity Function - Direction Finding (CAF-DF) technique is compared with the Space Alternating Generalized Expectation Maximization (SAGE) technique. The CAF-DF, ... -
A comparison of two methods for fusing information from a linear array of sonar sensors for obstacle localization
(IEEE, 1995)The performance of a commonly employed linear array of sonar sensors is assessed for point-obstacle localization intended for robotics applications. Two different methods of combining time-of-flight information from the ... -
Compressed sensing on ambiguity function domain for high resolution detection
(IEEE, 2010)In this paper, by using compressed sensing techniques, a new approach to achieve robust high resolution detection in sparse multipath channels is presented. Currently used sparse reconstruction techniques are not immediately ... -
Compressive digital receiver: first results on sensitivity, dynamic range and instantaneous bandwidth measurements
(Institute of Electrical and Electronics Engineers Inc., 2019)In this work, sensitivity, one/two-signal dynamic range and instantaneous bandwidth measurement results of the recently developed Compressive Digital Receiver (CDR) hardware for Electronic Support Measures (ESM) applications, ... -
Compressive sampling and adaptive multipath estimation
(IEEE, 2010)In many signal processing problems such as channel estimation and equalization, the problem reduces to a linear system of equations. In this proceeding we formulate and investigate linear equations systems with sparse ... -
Compressive sensing based target detection in delay-doppler radars
(IEEE, 2013)Compressive Sensing theory shows that, a sparse signal can be reconstructed from its sub-Nyquist rate random samples. With this property, CS approach has many applications. Radar systems, which deal with sparse signal due ... -
Compressive sensing-based robust off-the-grid stretch processing
(Institution of Engineering and Technology, 2017)Classical stretch processing (SP) obtains high range resolution by compressing large bandwidth signals with narrowband receivers using lower rate analogue-to-digital converters. SP achieves the resolution of the large ... -
Computerized ionospheric tomography with the IRI model
(Elsevier BV, 2007)Computerized ionospheric tomography (CIT) is a method to estimate ionospheric electron density distribution by using the global positioning system (GPS) signals recorded by the GPS receivers. Ionospheric electron density ... -
Convexity properties of detection probability under additive Gaussian noise: optimal signaling and jamming strategies
(IEEE, 2013)In this correspondence, we study the convexity properties for the problem of detecting the presence of a signal emitted from a power constrained transmitter in the presence of additive Gaussian noise under the Neyman-Pearson ... -
Cost-efficient approximation of linear systems with repeated and multi-channel filtering configurations
(IEEE, 1998-05)It is possible to obtain either exact realizations or useful approximations of linear systems or matrix-vector products arising in many different applications, by synthesizing them in the form of repeated or multi-channel ... -
Cross-ambiquity function domain multipath channel parameter estimation
(Elsevier, 2011-11-23)A new array signal processing technique is proposed to estimate the direction-of-arrivals (DOAs), time delays, Doppler shifts and amplitudes of a known waveform impinging on an array of antennas from several distinct paths. ... -
Çok görevli öğrenme ile eşzamanlı darbe tespiti ve kipleme sınıflandırma
(IEEE, 2019-04)Bu çalışmada, elektronik harp sistemlerindeki sayısal almaç yapıları tarafından toplanan, ortamdaki tehdit radarların gönderdigi darbesel sinyal örnekleri üzerinden otomatik olarak eşzamanlı SGO (Sinyal Gürültü Oranı) ... -
Çok-bileşenli sinyallerin analizi için destek bölge uyarlamalı hermite-gauss açılımı
(IEEE, 2011-04)Zaman-frekans destek bölgesi orijin etrafında dairesel bir alana uyan bir sinyal bileşeni için, Hermite-Gauss açılımı en az sayıda taban fonsiyonu kullanarak en iyi temsili oluşturur. Ancak, orijinden uzakta ve dairesel ... -
Çokyollu kanal parametre kestirimi için yeni bir dizilim sinyal işleme tekniği
(IEEE, 2007-06)Bu bildiride, çarpraz belirsizlik işlevinin kullanıldığı yeni bir dizilim sinyal işleme tekniği önerilmektedir. Geliştirilen teknik bir algılayıcı dizilimine gelen sinyallerden herbirinin geliş yönünü (GY), zaman gecikmesini ... -
Çokyollu ortamda çapraz belirsizlik işlevi-yön bulma tekniğinin başarım analizi
(IEEE, 2008-04)Bu bildiride, Çapraz Belirsizlik İşlevi-Yön Bulma (CAFDF) tekniğinin çokyollu ortamlardaki sinyallerin zaman gecikmesi, Doppler kayması, geliş yönü(GY) ve genlik kestirimindeki başarımı ile yiiksek çözünürlüklü algoritmalar ...
