Influence of the spectral image component on the amplitude and phase estimators provided by the interpolated DFT method

Proceedings of the Romanian Academy Series A-Mathematics Physics Technical Sciences Information Science

Daniel BELEGA¹ 

关键词: error analysis;    interpolated DFT method;    parameter estimation;    sine-wave;    windowing.;   

DOI  :  

学科分类：计算机科学（综合）

来源: Editura Academiei Romane

【 摘 要 】

In this paper the contribution of the spectral image of a sine-wave fundamental componenton the amplitude and phase estimators provided by the Interpolated Discrete Fourier Transform(IpDFT) method based on the Maximum Sidelobe Decay (MSD) windows is analyzed. In particular,accurate analytical expressions for the amplitude and phase estimation errors are proposed. Leveraging onthese expressions, amplitude and phase estimators that compensate the above detrimental contributionare proposed. The accuracies of the derived expressions are verified through computer simulations.Simulations are then used also to compare the accuracies of the uncompensated and compensatedamplitude and phase estimators.

【 授权许可】

Unknown