A Review of Different Estimation Methods of DC Offset Voltage For Periodic-Discrete Signals

The precise and efficient estimation of the DC component of the discrete periodic signals is required and used in many engineering and scientific fields of signal processing. In this paper there are presented several methods of estimating the DC component for discrete periodic signals. The main purpose of this paper is to show the influence of using a method of estimating DC offset on the precision of measurements and the present a comparison between several estimation methods. The estimation methods include the arithmetic mean method, the method using the Discreet Fourier Transform (DFT), the linear regression scattering method and the least squares method using high order interpolation. There are presented both theory elements and modeling and simulation elements specific to each method. An evaluation of the accuracy of the methods in which both the true error and the standard deviation are presented for each method is also performed.