منابع مشابه
Time - Delay Estimation ∗
An important signal parameter estimation problem is time-delay estimation. Here the unknown is the time origin of the signal: s (l, θ) = s (l − θ). The duration of the signal (the domain over which the signal is de ned) is assumed brief compared with the observation interval L. Although in continuous time the signal delay is a continuous-valued variable, in discrete time it is not. Consequently...
متن کاملMultipath time-delay estimation
A transmitted and known signal is observed at the receiver through more than one path in additive noise. The problem is to estimate the number of paths and for each of them the associated attenuation and delay. It is a frequent problem in sonar, radar and geophysics. We propose an algorithm that is easy to implement, that has a reasonable computational load and seems to be able to solve the pro...
متن کاملApplication of Model-Based Estimation to Time-Delay Estimation of Ultrasonic Testing Signals
Time-Delay-Estimation (TDE) has been a topic of interest in many applications in the past few decades. The emphasis of this work is on the application of model-based estimation (MBE) for TDE of ultrasonic signals used in ultrasonic thickness gaging. Ultrasonic thickness gaging is based on precise measurement of the time difference between successive echoes which reflect back from the back wall ...
متن کاملAdaptive subsample time delay estimation
This letter addresses the problem of on-line subsample time delay estimation of narrowband signals of known center frequency. A new form of the Lagrange interpolator lter is presented in this letter which is incorporated into the explicit time delay estimator (ETDE) method. Simulations show that ETDE with the lter modulated to the signal center frequency signiicantly outperforms conventional ETDE.
متن کاملTime Delay Estimation Based On
This paper proposes a new time delay estimation model, Summary Cross-correlation Function (SCCF). It is based on a hearing model of the human ear, which comes from a pitch perception model. The inherent relation between some time delay estimation (TDE) and pitch perception method is mentioned, and propose an idea some pitch perception models’ pre-processing can be used for references in TDE mod...
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ژورنال
عنوان ژورنال: IEEE Transactions on Acoustics, Speech, and Signal Processing
سال: 1981
ISSN: 0096-3518
DOI: 10.1109/tassp.1981.1163559