Title :
Signal enhancement of nonsynchronized measurements for frequency domain system identification
Author_Institution :
Dept. of Meas. & Instrum. Eng., Tech. Univ. of Budapest, Hungary
fDate :
2/1/1992 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
