Signal enhancement of nonsynchronized measurements for frequency domain system identification

Author

Kollar, Istvan

Author_Institution

Dept. of Meas. & Instrum. Eng., Tech. Univ. of Budapest, Hungary

Volume

41

Issue

1

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

156

Lastpage

159

Abstract

The possibilities of an a posteriori synchronization of nonsynchronized data records are investigated for the purpose of signal enhancement of a periodic signal. The theoretical background for an effective frequency domain method is given, and the errors of the averaged complex amplitudes are calculated. The time delay between records is identified via maximum likelihood estimation, which is slightly modified in order to improve computational effectiveness. The results are supported by simulations

Keywords

computerised signal processing; delays; digital simulation; estimation theory; interference suppression; signal detection; synchronisation; a posteriori synchronization; averaged complex amplitudes; computational effectiveness; errors; frequency domain system identification; maximum likelihood estimation; noise suppression; nonsynchronized measurements; periodic signal; signal enhancement; simulations; time delay; Clocks; Delay effects; Delay estimation; Frequency domain analysis; Frequency measurement; Frequency synchronization; Sampling methods; Signal processing; System identification; Transmission line measurements;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.126652

Filename

126652