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A new automatic system for angular measurement and calibration in radiometric instruments.

Jose Manuel Andujar Marquez¹, Miguel Ángel Martínez Bohórquez, Jonathan Medina Garcia

¹Departamento de Ingeniería Electrónica, de Sistemas Informáticos y Automática, Escuela Politécnica Superior de la Universidad de Huelva, Ctra. Palos de la Ftra.-Huelva s/n, 21819 Palos de la Frontera, Huelva, Spain. andujar@uhu.es

Sensors (Basel, Switzerland)

|February 10, 2012

Summary

A new automatic system precisely measures and calibrates radiometric instruments, calculating and correcting cosine error for improved accuracy. This enhances the reliability of radiometric measurements.

Keywords:

angular response calibration cosine error data acquisition radiometric instrument solar irradiance

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Area of Science:

Radiometry and Photometry
Metrology and Measurement Science

Background:

Radiometric instruments require precise angular-response calibration.
Cosine error is a significant factor affecting measurement accuracy.
Existing calibration methods can be time-consuming and complex.

Purpose of the Study:

To design, construct, and test an automated system for angular-response measurement and calibration of radiometric instruments.
To develop a system capable of calculating and correcting cosine error in real-time.
To improve the precision, speed, and ease of use in radiometric calibration.

Main Methods:

Development of an automated system incorporating a virtual instrument.
Implementation of a mathematical procedure for cosine error calculation.
Testing and validation of the system's performance characteristics (precision, speed, resolution, noise immunity).

Main Results:

The system successfully measures and calibrates the angular response of radiometric instruments.
Cosine error is accurately calculated using the virtual instrument and mathematical procedure.
The system demonstrates high precision, speed, resolution, and noise immunity.
The developed system allows for effective correction of cosine error.

Conclusions:

The new automatic system provides an efficient and accurate solution for radiometric instrument calibration.
The system's ability to correct cosine error enhances the reliability of radiometric measurements.
The design facilitates easy programming and operation, making it a valuable tool for metrology.