title: Analysis and Calibration of Sources of Electronic Error in PSD Sensor Response.
abstract: In order to obtain very precise measurements of the position of agents located at a considerable distance using a sensor system based on position sensitive detectors (PSD), it is necessary to analyze and mitigate the factors that generate substantial errors in the system's response. These sources of error can be divided into electronic and geometric factors. The former stem from the nature and construction of the PSD as well as the performance, tolerances and electronic response of the system, while the latter are related to the sensor's optical system. Here, we focus solely on the electrical effects, since the study, analysis and correction of these are a prerequisite for subsequently addressing geometric errors. A simple calibration method is proposed, which considers PSD response, component tolerances, temperature variations, signal frequency used, signal to noise ratio (SNR), suboptimal operational amplifier parameters, and analog to digital converter (ADC) quantitation SNRQ, etc. Following an analysis of these effects and calibration of the sensor, it was possible to correct the errors, thus rendering the effects negligible, as reported in the results section.
authors.affiliation: Department of electronics, University of Alcalá, Alcalá de Henares (Madrid) 28801, Spain. david.rodriguez@depeca.uah.es.
authors.forename: David
authors.initials: D
authors.lastname: Rodríguez-Navarro
authors.affiliation: Department of electronics, University of Alcalá, Alcalá de Henares (Madrid) 28801, Spain. lazaro@depeca.uah.es.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Lázaro-Galilea
authors.affiliation: Department of electronics, University of Alcalá, Alcalá de Henares (Madrid) 28801, Spain. ibravo@depeca.uah.es.
authors.forename: Ignacio
authors.initials: I
authors.lastname: Bravo-Muñoz
authors.affiliation: Department of electronics, University of Alcalá, Alcalá de Henares (Madrid) 28801, Spain. alfredo@depeca.uah.es.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Gardel-Vicente
authors.affiliation: Informatics Engineering Department, Eastern Macedonia and Thrace Institute of Technology, Kavala 65404, Greece. tsirigo@teikav.edu.gr.
authors.forename: Georgios
authors.initials: G
authors.lastname: Tsirigotis
keywords: PSD; infrared sensors; local positioning system; measurement errors; sensor calibration