Basic Problems of Measurement Signal Reconstruction
RZ Morawski · 1989
Any measurement process may be logically decomposed into two parts: conversion and reconstruction. The first one consists in transformation of a signal to be measured x into a raw result of measurement y which represents x in the domain of 'easily interpretable' phenomena, such as electrical signals and digital codes. The second operation consists in estimation of x on the basis of y. Before choosing an appropriate method for performing it, one has to answer several key questions, viz.: What is the mathematical model of the dependence of y on x? How should be modelled the measurement data representing y? What is the available a-priori information about the class of reconstructed signals and disturbances the data are subject to? What are the properties of technical means which will be used for reconstruction? In this paper, an attempt has been to outline the design methodology for application of reconstruction in the domain of metrology and instrumentation.