Güncel Gönderiler: Elektrik ve Elektronik Mühendisliği Bölümü
Toplam kayıt 552, listelenen: 301-320
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A Comparison of Corner and Saliency Detection Methods for Power Line Detection
(IEEE, 2017)Issuing an alarm for power lines continues to be an important issue for low altitude aircraft safety. In this study, edge and gradient based methods are applied and compared according to their detection performances (in ... -
Feature extraction, selection and classification code for power line scene recognition
(Elsevier Science BV, 2018)Detection and avoiding of power lines and cables is a critical issue in aircraft flight safety. Despite various improvements in image analysis literature, most of the safety issues depend on visual capabilities of pilots. ... -
PLD : Power Line Detection System for Aircrafts
(IEEE, 2017)Power Line Detection (PLD) is still an important issue for aircraft safety. In this study, two simple PLD algorithms are developed that utilize two alternative line detection algorithms (EDLines and LSD) and feed their ... -
MUSIC Algorithm for Respiratory Rate Estimation Using RF Signals
(İstanbul University, Fac Engineering, 2018)Continuous monitoring of respiratory rate (cycle) during sleep for diseases such as sleep apnea and sudden infant death syndrome (SIDS) can be lifesaving. Wireless radio communications signals are everywhere and can be ... -
The Localization of LPI Signals Using Sparse TDOA Estimates
(IEEE, 2016)In this paper, the localization problem of the low probability of intercept (LPI) signals using time difference of arrival (TDOA) estimates between the sensors is considered. A fast and sparse method is proposed for the ... -
A Joint Detection and Localization Method for Non-Cooperative DS-SS Signals
(IEEE, 2015)In this paper, a fast and computationally efficient joint presence detection and localization method is proposed for the non-cooperative direct sequence spread spectrum (DS-SS) signals. The method uses spatially distributed ... -
Detection of Low Probability of Intercept Signals in Low SNR Using Multichannel Sensor Arrays
(IEEE, 2014)In this paper, a method is proposed for the detection of low probability of intercept, LPI signals in high noise without prior knowledge and assumption using spatially distributed multichannel wideband sensor array. The ... -
Presence Detection of Long-and-Short-Code DS-SS Signals Using the Phase Linearity of Multichannel Sensors
(IEEE, 2014)In this study, the detection of direct sequence spread spectrum (DS-SS) signals in white Gaussian noise without prior knowledge is investigated for spatially distributed multichannel wideband sensor array. A novel technique ... -
A Sparse Approach for the Presence Detection of Long-code DS-SS Signals
(IEEE, 2015)In this paper, the presence detection of long-code direct sequence spread spectrum signals (DS-SS) in low signal to noise ratio (SNR) using the sensor array are considered. A sparse method, which is fast and computationally ... -
Prediction of partial synchronization in delay-coupled nonlinear oscillators, with application to Hindmarsh-Rose neurons
(IOP Publishing LTD, 2013)The full synchronization of coupled nonlinear oscillators has been widely studied. In this paper we investigate conditions for which partial synchronization of time-delayed diffusively coupled systems arises. The coupling ... -
Robust flow control in data-communication networks with multiple time-delays
(Wiley, 2010)Robust controller design for a flow control problem where uncertain multiple time-varying time-delays exist is considered. Although primarily data-communication networks are considered, the presented approach can also be ... -
Stable H-infinity flow controller design using approximation of FIR filters
(SAGE Publications LTD, 2012)Stable flow controllers are usually preferred since, compared with unstable flow controllers, they are less sensitive to any modelling imperfections. H-infinity-optimal flow controllers involve finite impulse-response (FIR) ... -
Performance and Robustness of Flow Controllers Designed Using Non-causal Uncertainty Blocks
(Wiley, 2013)According to some recent results, use of non-causal uncertainty blocks may be advantageous in the robust controller design of systems with multiple uncertain time-delays. In this work, performance and robustness improvements ... -
Further remarks on the effect of multiple spectral values on the dynamics of time-delay systems. Application to the control of a mechanical system
(Elsevier Science Inc, 2018)A question of ongoing interest for linear Time-delay systems is to determine conditions on the equation parameters that guarantee the exponential stability of solutions. In recent works a new interesting property of ... -
Performance level and stability margins of an optimal H-infinity flow controller
(SAGE Publications LTD, 2012)Flow controllers are needed to avoid congestion in different types of networks. The dynamics of such networks, however, can usually be represented by infinite-dimensional models, which are either based on partial-differential ... -
Stable H-infinity controller design for systems with multiple input/output time-delays
(Pergamon-Elsevier Science LTD, 2012)The stable H-infinity controller design problem is considered for multi-input-multi-output systems with multiple input/output time-delays. An algorithm is presented to solve this problem. The algorithm makes use of the ... -
Further Remarks on Delay Dynamics in Oregonator Models
(IEEE, 2016)Motivated by the fact that molecules reacting through some biological channels may need some time-lag due transcription and translation processes, this note is devoted to the study of stability properties of a delayed ... -
A small gain theorem for systems with non-causal subsystems
(Pergamon-Elsevier Science LTD, 2008)Small gain theorems are used to verify the stability of a feedback interconnection of causal stable systems. In this work, we extend the small gain condition to test the stability of a feedback interconnection of two stable ... -
Characterization and Computation of Partial Synchronization Manifolds for Diffusive Delay-Coupled Systems
(Siam Publications, 2016)Sometimes a network of dynamical systems shows a form of incomplete synchronization, characterized by synchronization of some but not all of its component systems. This type of incomplete synchronization is called partial ... -
RSS based Localization of an Emitter Using a Single Mini UAV
(IEEE, 2017)In this study, it is aimed to find the position of a signal emitter by the means of a mini unmanned aerial vehicle (mUAV) with a sensor node that can record the received signal strength (RSS) and the global positioning ...
