Signal and echo arrival‐time estimation using wavelets
نویسندگان
چکیده
منابع مشابه
Moments and Wavelets in Signal Estimation
The problem of generalized nonparametric function estimation has received considerable attention over the last two decades. Most of the approaches have assumed smoothness of the function to be estimated generally in the form of continuity of higher order derivatives and/or bounded variation and have used convolution kernels or splines as the estimation devices. Generally focus has been on densi...
متن کاملSignal Denoising Using Wavelets
One of the fields where wavelets have been successfully applied is data analysis. Beginning in the 1990s, wavelets have been found to be a powerful tool for removing noise from a variety of signals (denoising). They allow to analyse the noise level separately at each wavelet scale and to adapt the denoising algorithm accordingly. Wavelet thresholding methods for noise removal, in which the wave...
متن کاملAtmospheric Signal Processing using Wavelets and HHT
The HHT (Hilbert-Huang transform) and wavelet transform are both signal processing methods. This paper is based on comparing HHT and Wavelet transform applied to Radar signals. HHT can be used for processing nonstationary and nonlinear signals. It is one of the time-frequency analysis techniques which consists of Empirical Mode Decomposition (EMD) and instantaneous frequency solution. EMD is a ...
متن کاملMotion estimation using complex wavelets
This paper describes a new wavelet-based approach to the motion estimation problem for digital video. A complex-valued Discrete Wavelet Transform is used to decompose each frame into a subsampled directionally bandpass ltered hierarchy. The transform is deened so that at each level there is an approximate correspondence between local translation and coeecient phase shift. This relationship is u...
متن کاملNonparametric Density Estimation using Wavelets
Here the problem of density estimation using wavelets is considered. Nonparametric wavelet density estimators have recently been proposed and seem to outperform classical estimators in representing discontinuities and local oscillations. The purpose of this paper is to give a review of different types of wavelet density estimators proposed in the literature. Properties, comparisons with classic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1995
ISSN: 0001-4966
DOI: 10.1121/1.411556