CLOSED-FORM FREQUENCY ESTIMATION USING SECOND-ORDER NOTCH FILTERS
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 1101-1106 |
| Journal / Publication | IFAC Proceedings Volumes (IFAC-PapersOnline) |
| Volume | 36 |
| Issue number | 16 |
| Publication status | Published - Sep 2003 |
Conference
| Title | 13th IFAC Symposium on System Identification (SYSID 2003) |
|---|---|
| Place | Netherlands |
| City | Rotterdam |
| Period | 27 - 29 August 2003 |
Link(s)
Abstract
In this paper the problem of the frequency estimation of a sinusoid embedded in white noise is considered. The approach used herein is the minimization of the sample variance of the output of constrained notch filters fed by the noisy sinusoid. In particular, this paper focuses on closed-form expressions of the frequency estimate, which can be obtained using notch filters having an all-zeros FIR structure. In this paper it is shown that the FIR notch filters obtained from standard 2nd-order IIR filters are inadequate, and an alternate 2nd-order IIR notch filter is proposed, which provides an unbiased estimate of the frequency. The FIR filter obtained from the new IIR filter provides a closed-form unbiased frequency estimate.
Research Area(s)
- Frequency estimation, harmonic analysis, notch filters, unbiased parameter identification
Citation Format(s)
CLOSED-FORM FREQUENCY ESTIMATION USING SECOND-ORDER NOTCH FILTERS. / Savaresi, S. M.; Bittanti, S.; So, H. C.
In: IFAC Proceedings Volumes (IFAC-PapersOnline), Vol. 36, No. 16, 09.2003, p. 1101-1106.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
