A variational approach to the extraction of in-phase and quadrature components

Author

Gordon, William B.

Author_Institution

SFA Inc., Rockville, MD, USA

Volume

46

Issue

5

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

1238

Lastpage

1244

Abstract

A variational approach is used to define the carrier frequency and the in-phase and quadrature components of a real-valued pulse-like signal. This approach produces a representation in which the in-phase and quadrature components have the smallest possible amount of functional variation. The variational theory is compared with the standard theory of Gabor. The two theories are found to produce essentially the same results for narrowband signals, but in the wideband case, they can differ by an extent that might be significant for the processing of Doppler perturbed radar data

Keywords

Doppler radar; radar signal processing; signal representation; transient analysis; variational techniques; Doppler perturbed radar data; carrier frequency; extraction; functional variation; in-phase components; narrowband signals; quadrature components; real-valued pulse-like signal; representation; variational approach; wideband signals; Doppler radar; Frequency; Narrowband; Particle measurements; Power measurement; Radar signal processing; Radar theory; Signal analysis; Signal processing; Time measurement;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.668787

Filename

668787