Advisors
Now showing items 1-18 of 18
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Automatic radar antenna scan analysis in electronic warfare
(Bilkent University, 2010)Estimation of the radar antenna scan period and recognition of the antenna scan type is usually performed by human operators in the Electronic Warfare (EW) world. In this thesis, we propose a robust algorithm to automatize ... -
Classification of target primitives with sonar using two non-parametric data fusion methods
(Bilkent University, 1996)In this study, physical models are used to model reflections from target primitives commordy encountered in a mobile robot’s environment. These tcirgets are differentiated by employing a multi-transducer pulse/echo system ... -
A comparative analysis of different approaches to target differentiation and localization using infrared sensors
(Bilkent University, 2006)This study compares the performances of various techniques for the differentiation and localization of commonly encountered features in indoor environments, such as planes, corners, edges, and cylinders, possibly with ... -
A comparative study of five algorithms for processing ultrasonic arc maps
(Bilkent University, 2005)In this work, one newly proposed and four existing algorithms for processing ultrasonic arc maps are compared for map-building purposes. These algorithms are the directional maximum, Bayesian update, morphological ... -
A comparative study on human activity classification with miniature inertial and magnetic sensors
(Bilkent University, 2011)This study provides a comparative assessment on the different techniques of classifying human activities that are performed using body-worn miniature inertial and magnetic sensors. The classification techniques compared ... -
A comparison of different approaches to target differentiation with sonar
(Bilkent University, 2001)This study compares the performances of di erent classication schemes and fusion techniques for target di erentiation and localization of commonly encountered features in indoor robot environments using sonar sensing Di ... -
Deterministic and stochastic error modeling of inertial sensors and magnetometers
(Bilkent University, 2012)This thesis focuses on the deterministic and stochastic modeling and model parameter estimation of two commonly employed inertial measurement units. Each unit comprises a tri-axial accelerometer, a tri-axial gyroscope, ... -
Differentiation and localization using infrared sensors
(Bilkent University, 2002-08)In this thesis different approaches for the differentiation and localization of targets using low cost infrared sensors are presented. The intensity readings obtained with such sensors are highly dependent on the location ... -
Dynamic obstacle avoidance with a prototype mobile robot using acoustic, infrared and position sensing
(Bilkent University, 1997)In this study, a small mobile robot is designed and built which employs infrared and acoustic sensors for detecting obstacles in the environment and a computer mouse for position sensing* that is installed underneath the ... -
Fall detection and classification using wearable motion sensors
(Bilkent University, 2017-08)Effective fall-detection systems are vital in mitigating severe medical and economical consequences of falls to people in the fall risk groups. One class of such systems is wearable sensor based fall-detection systems. ... -
Human activity classification with miniature inertial sensors
(Bilkent University, 2009)This thesis provides a comparative study on activity recognition using miniature inertial sensors (gyroscopes and accelerometers) and magnetometers worn on the human body. The classification methods used and compared in ... -
Improved range estimation using simple infrared sensors without prior knowledge of surface characteristics
(Bilkent University, 2004)This thesis describes a new method for range estimation using low-cost infrared sensors. The intensity data acquired with infrared sensors depends highly on the surface properties and the con guration of the sensors with ... -
Intelligent sensing for robot mapping and simultaneous human localization and activity recognition
(Bilkent University, 2011)We consider three different problems in two different sensing domains, namely ultrasonic sensing and inertial sensing. Since the applications considered in each domain are inherently different, this thesis is composed ... -
A novel compression algorithm based on sparse sampling of 3-D laser range scans
(Bilkent University, 2010)3-D models of environments can be very useful and are commonly employed in areas such as robotics, art and architecture, environmental planning and documentation. A 3-D model is typically comprised of a large number of ... -
Radius of curvature and location estimation of cylindrical objects with sonar using a multi-sensor configuration
(Bilkent University, 1997)Despite their limitations, sonar sensors are very popular in time-of-flight measuring systems since they are inexpensive and convenient. One of the most important limitations of sonar is its low angular resolution. An ... -
Recognition and classification of human activities using wearable sensors
(Bilkent University, 2012)We address the problem of detecting and classifying human activities using two different types of wearable sensors. In the first part of the thesis, a comparative study on the different techniques of classifying human ... -
A simulation model of indoor environments for ultrasonic sensors
(Bilkent University, 2003)This thesis addresses the problem of extracting the map of an unknown environment from echo signals received by ultrasonic transducers. A new map-building method is developed and demonstrated through simulations for ... -
Simultaneous localization and mapping for unmanned aerial vehicles
(Bilkent University, 2008)Most mobile robot applications require the robot to be able to localize itself in an unknown environment without prior information so that the robot can navigate and accomplish tasks. The robot must be able to build a ...
