Adaptive techniques for time-delay estimation and tracking
This paper discusses the problem of adaptive time-delay estimation in the specific case where the recorded input signals are sinusoids with additive noise. We consider two simple adaptive techniques which do not require transforms and are capable of tracking a nonstationary, time-varying delay. First, a method which makes use of a two-pole, all-pass adaptive filter is introduced. An LMS-type of adaptive algorithm is derived, and the associated error surface is discussed. The performance of this adaptive structure is then compared to that of the adaptive delay element recently introduced by Etter. Simulation results are compared on the basis of delay estimate accuracy, rate of convergence, and the ability to track time-varying phase shifts.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6148445
- Report Number(s):
- SAND-83-0229; CONF-830628-5; ON: DE83011795
- Country of Publication:
- United States
- Language:
- English
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