Accurate Frequency Estimator for Real Sinusoid Based on DFT
نویسندگان
چکیده
An accurate frequency estimator for real sinusoid based on Discrete Fourier Transform (DFT) is proposed. The proposed the interpolation of maximum DFT spectral line and two Discrete-Time (DTFT) lines can operate with both rectangular window sidelobe decay (MSD) window. In coarse estimation step, MSD used. According to value estimate, negative component removed. fine utilized achieve Cramer–Rao lower bound (CRLB). Simulation results show that performance this algorithm better than AM algorithm, Candan Djukanovic FDIAM algorithm.
منابع مشابه
Bias Reduction for Direct Frequency Estimator of Complex Sinusoid
Frequency estimation of single-tone complex sinusoid is a fundamental problem in signal processing. An efficient way to estimate the frequency is to directly calculate the frequency from three discrete Fourier transform coefficients in the neighborhood of peak magnitude spectrum. Because of the approximation used in the calculation, these direct estimators exhibit non-uniform biases. In this pa...
متن کاملIterative quadratic maximum likelihood based estimator for a biased sinusoid
The problem of parameter estimation of a single sinusoid with unknown offset in additive Gaussian noise is addressed. After deriving the linear prediction property of the noise-free signal, the maximum likelihood estimator for the frequency parameter is developed. The optimum estimator is relaxed according to the iterative quadratic maximum likelihood technique. The remaining parameters are the...
متن کاملA fast and accurate single frequency estimator
A new frequency estimator for a single complex sinusoid in complex white Gaussian noise is proposed. The estimator is more computationally efficient than the optimal maximum likelihood estimator yet attains as good performance at moderately high signal-tonoise ratios. Also, the estimator is shown to be related to the linear prediction estimator. This relationship is exploited to reveal why the ...
متن کاملReal Time Knock Detection with Dft-based Time-frequency Analysis
New generations of spark ignition engines require a correct ignition adjustment to guarantee optimal performance. In this paper, we address the challenge of knock detection improvements with time-frequency analysis. Two real time knock detection methodologies based on the sliding Discrete Fourier Transform and the pseudo Wigner-Ville distribution are exposed. Their relative performances and rob...
متن کاملRobust On-Line Frequency Identification for a Sinusoid
This paper discusses the on-line frequency identification problem for a measured sinusoidal signal by using the adaptive method and filter theory. The proposed method is based on an identity between the sinusoidal signal and its second order derivative. For a set of chosen parameters, the proposed method is robust to the initial phase, the amplitude, and the frequency in a wide range. The conve...
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: Electronics
سال: 2022
ISSN: ['2079-9292']
DOI: https://doi.org/10.3390/electronics11193042