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A New Automatic System for Angular Measurement and Calibration in Radiometric Instruments

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Author(s): Jose Manuel Andujar Marquez | Miguel Ángel Martínez Bohórquez | Jonathan Medina Garcia | Francisco Jose Aguilar Nieto

Journal: Sensors
ISSN 1424-8220

Volume: 10;
Issue: 4;
Start page: 3703;
Date: 2010;
Original page

Keywords: angular response | calibration | cosine error | data acquisition | radiometric instrument | solar irradiance

ABSTRACT
This paper puts forward the design, construction and testing of a new automatic system for angular-response measurement and calibration in radiometric instruments. Its main characteristics include precision, speed, resolution, noise immunity, easy programming and operation. The developed system calculates the cosine error of the radiometer under test by means of a virtual instrument, from the measures it takes and through a mathematical procedure, thus allowing correcting the radiometer with the aim of preventing cosine error in its measurements.
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