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Now showing items 11-20 of 33
Improving DOA Estimation Algorithms Using High-Resolution Quadratic Time-Frequency Distributions
(
Institute of Electrical and Electronics Engineers Inc.
, 2017 , Article)
This paper addresses the problem of direction of arrival (DOA) estimation and blind source separation (BSS) for nonstationary signals in the underdetermined case. These two problems are strongly related to the mixing matrix ...
Range-Doppler radar sensor fusion for fall detection
(
Institute of Electrical and Electronics Engineers Inc.
, 2017 , Conference Paper)
Falls are the major cause of accidents in the elderly population. Propelled by their non-intrusive sensing capabilities and robustness to heat and lighting conditions, radar-based automated fall detection systems have ...
Radar fall detectors: A comparison
(
SPIE
, 2016 , Conference Paper)
Falls are a major cause of accidents in elderly people. Even simple falls can lead to severe injuries, and sometimes result in death. Doppler fall detection has drawn much attention in recent years. Micro-Doppler signatures ...
Radar fall detection using principal component analysis
(
SPIE
, 2016 , Conference Paper)
Falls are a major cause of fatal and nonfatal injuries in people aged 65 years and older. Radar has the potential to become one of the leading technologies for fall detection, thereby enabling the elderly to live independently. ...
Signal content estimation based on the short-term time-frequency Rényi entropy of the S-method time-frequency distribution
(2012 , Conference Paper)
A key characteristic of a nonstationary signal, when analyzed in the time-frequency domain, is the signal complexity, quantified as the number of components in the signal. This paper describes a method for the estimation ...
Time-frequency methods in communications
(
Elsevier Inc.
, 2016 , Book chapter)
The wide range of potential applications of time-frequency (t,f) methods made them an important tool in most fields of science and engineering. Telecommunications is one of the key industries where (t,f) methods started ...
Advanced implementation and realization of TFDs
(
Elsevier Inc.
, 2016 , Book chapter)
The design of efficient algorithms is the key to effective utilization of the properties of time-frequency distributions (TFDs) for real-life applications. This chapter presents the needed procedures, techniques, and ...
Time-frequency methods in radar, sonar, and acoustics
(
Elsevier Inc.
, 2016 , Book chapter)
The fields of radar and sonar are traditionally key application areas and testing grounds for advances in signal processing, including time-frequency (t,f) methodologies; their significance is demonstrated in seven ...
Advanced time-frequency signal and system analysis
(
Elsevier Inc.
, 2016 , Book chapter)
This chapter extends Part I by presenting additional advanced key principles underlying the use of time-frequency (t,f) methods. The topic is covered in 11 focused sections.
Section 4.1 describes the relationships between ...
Measures, performance assessment, and enhancement of TFDs
(
Elsevier Inc.
, 2016 , Book chapter)
This chapter describes a number of time-frequency (t,f) performance quality measures specifically developed as criteria for performance enhancement for a given application. The adopted performance measures are defined using ...