Pulse Amplitude Measurement Using Low Sampling ADC and Interpolation Technique

Pulse amplitude measurement for the analog signal is now widely used in applications like spectroscopy, IR / laser receiver, RF signal receiver, etc. Accurate Amplitude measurement requires a high-speed analog to digital converter which consumes high power. In this paper we are aiming to detect analog pulse amplitude with low sampling ADC and interpolation method. The comparative study of seven interpolating methods namely Near interpolation, Linear interpolation, Cubic interpolation, LaGrange’s interpolation, Newton Raphson interpolation, Whittaker Shannon interpolation and Neville’s algorithm were conducted for measurement of analog pulse peak height. The interpolation method is selected based on the relative error, mean square error and mean absolute deviation. The performance of each method and the overall system is discussed in this paper.