Doppler frequency estimation using maximum likelihood function for low ultrasonic velocity profile
نویسندگان
چکیده
منابع مشابه
Approximate Maximum Likelihood Method for Frequency Estimation
A frequency can be estimated by few Discrete Fourier Transform (DFT) coefficients, see Rife and Vincent (1970), Quinn (1994, 1997). This approach is computationally efficient. However, the statistical efficiency of the estimator depends on the location of the frequency. In this paper, we explain this approach from a point of view of an Approximate Maximum Likelihood (AML) method. Then we enhanc...
متن کاملMultiple Autocorrelation Function-based Maximum Doppler Frequency Estimation
Abstract: In this paper, we introduce a maximum Doppler frequency estimation scheme based on autocorrelation function (ACF) and propose a modified ACF-based method for orthogonal frequency division multiplexing (OFDM) systems. The traditional ACF-based estimation scheme has a trade-off relationship between estimation range of the maximum Doppler frequency and the corresponding performances such...
متن کاملMaximum Likelihood and Suboptimal Schemes for Micro-Doppler Estimation using Carrier Diverse Doppler Radars
Carrier diverse radars, known as dual frequency radars, employ two different frequencies, and can be effective in determining the moving target range in urban sensing and through-the-wall radar applications. In this paper, we derive the maximum likelihood (ML) estimator for the micro-Doppler motion parameters from the dual frequency radar returns. Micro-Doppler signatures, which are commonly as...
متن کاملJoint maximum likelihood estimation of time delays and Doppler shifts
This paper deals with the problem of estimating the amplitudes, time delays and Doppler shifts of a set of known signals received by an array of antennas in temporally white but spatially colored noise. Applying the Maximum Likelihood approach, the estimation reduces to an optimization problem where the nonlinear parameters such frequency shifts and delays are jointly estimated by means of a mi...
متن کاملStochastic Maximum Likelihood (SML) parametric estimation of overlapped Doppler echoes
This paper investigates the area of overlapped echo data processing. In such cases, classical methods, such as Fourier-like techniques or pulse pair methods, fail to estimate the first three spectral moments of the echoes because of their lack of resolution. A promising method, based on a modelization of the covariance matrix of the time series and on a Stochastic Maximum Likelihood (SML) estim...
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: Acoustical Science and Technology
سال: 2017
ISSN: 1346-3969,1347-5177
DOI: 10.1250/ast.38.268