بحث بسيط
السجلات المعروضة 21 -- 30 من 41
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 ...
Instantaneous frequency estimation and localization
(
Elsevier Inc.
, 2016 , Book chapter)
In many applications, a critical feature of a non-stationary signal is provided by its instantaneous frequency (IF), which accounts for the signal spectral variations as a function of time. This chapter presents methods ...
Detection, classification, and estimation in the (t, f ) domain
(
Elsevier Inc.
, 2016 , Book chapter)
Several studies involving real-life applications have shown that methods for the detection, estimation, and classification of nonstationary signals can be enhanced by utilizing the time-frequency ((t,f)) characteristics ...
Theory and design of high-resolution quadratic TFDs
(
Elsevier Inc.
, 2016 , Book chapter)
The quadratic time-frequency distributions (TFDs) introduced in the previous chapter represent the majority of traditional time-frequency ((t,f)) methods used in practical applications that deal with nonstationary signals. ...
Multisensor, multichannel, and time-space processing
(
Elsevier Inc.
, 2016 , Book chapter)
This chapter presents time-frequency (t,f) methods suitable for multichannel signal processing using multisensor and time-space processing methods. The topic is covered in seven sections with relevant cross-referencing.
A ...