Browsing by Keywords "Position estimation"
Now showing items 1-14 of 14
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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 ... -
Differentiation and localization of targets using infrared sensors
(Elsevier, 2002)This study investigates the use of low-cost infrared emitters and detectors in the differentiation and localization of commonly encountered features or targets in indoor environments, such as planes, corners, edges, and ... -
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 ... -
Enhanced position estimation via node cooperation
(IEEE, 2010)Two-way time-of-arrival (TW-ToA) is a widely used ranging protocol that can provide the distance between two devices without time synchronization. One drawback of the TW-ToA is poor positioning accuracy in the absence of ... -
Fractional fourier transform pre-processing for neural networks and its application to object recognition
(Elsevier, 2002-01)This study investigates fractional Fourier transform pre-processing of input signals to neural networks. The fractional Fourier transform is a generalization of the ordinary Fourier transform with an order parameter a. ... -
Fundamental limits and improved algorithms for linear least-squares wireless position estimation
(John Wiley & Sons, 2010-09-22)In this paper, theoretical lower bounds on performance of linear least-squares (LLS) position estimators are obtained, and performance differences between LLS and nonlinear least-squares (NLS) position estimators are ... -
Improved range estimation using simple infrared sensors without prior knowledge of surface characteristics
(Institute of Physics Publishing Ltd., 2005)This paper describes a new method for position estimation of planar surfaces using simple, low-cost infrared sensors. The intensity data acquired with infrared sensors depend highly on the surface properties and the ... -
Position-invariant surface recognition and localization using infrared sensors
(SPIE, 2003)Low-cost infrared emitters and detectors are used for the recognition of surfaces with different properties in a location-invariant manner. The intensity readings obtained with such devices are highly dependent on the ... -
Rule-based target differentiation and position estimation based on infrared intensity measurements
(SPIE, 2003)This study investigates the use of low-cost infrared sensors in the differentiation and localization of target primitives commonly encountered in indoor environments, such as planes, corners, edges, and cylinders. The ... -
Simultaneous extraction of geometry and surface properties of targets using simple infrared sensors
(SPIE, 2004)We investigate the use of low-cost infrared (IR) sensors for the simultaneous extraction of geometry and surface properties of commonly encountered features or targets in indoor environments, such as planes, corners, and ... -
Surface differentiation and localization by parametric modeling of infrared intensity scans
(IEEE, 2005)In this study, surfaces with different properties are differentiated with simple low-cost infrared (IR) emitters and detectors in a location-invariant manner. The intensity readings obtained from such sensors are highly ... -
Surface differentiation by parametric modeling of infrared intensity scans
(SPIE-International Society for Optical Engineering, 2005)We differentiate surfaces with different properties with simple low-cost IR emitters and detectors in a location-invariant manner. The intensity readings obtained with such sensors are highly dependent on the location and ... -
A survey on wireless position estimation
(Springer New York LLC, 2008)In this paper, an overview of various algorithms for wireless position estimation is presented. Although the position of a node in a wireless network can be estimated directly from the signals traveling between that node ... -
Transform pre-processing for neural networks for object recognition and localization with sonar
(SPIE, 2003)We investigate the pre-processing of sonar signals prior to using neural networks for robust differentiation of commonly encountered features in indoor environments. Amplitude and time-of-flight measurement patterns acquired ...
