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Volume 18
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10.3390/s18061807
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Article

Considerations about the Determination of the Depolarization Calibration Profile of a Two-Telescope Lidar and Its Implications for Volume Depolarization Ratio Retrieval

by
Adolfo Comerón
1,
Alejandro Rodríguez-Gómez
1,*,
Michaël Sicard
1,2,
Rubén Barragán
1,2,
Constantino Muñoz-Porcar
1,
Francesc Rocadenbosch
1,2 and
María José Granados-Muñoz
1
1
CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya (BarcelonaTech-UPC), 08034 Barcelona, Spain
2
Ciències i Tecnologies de l’Espai—Centre de Recerca de l’Aeronàutica i de l’Espai/Institut d’Estudis Espacials de Catalunya (CTE-CRAE/IEEC), Universitat Politècnica de Catalunya, 08034 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(6), 1807; https://doi.org/10.3390/s18061807
Submission received: 6 May 2018 / Revised: 22 May 2018 / Accepted: 31 May 2018 / Published: 4 June 2018
(This article belongs to the Section Remote Sensors)
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Abstract

We propose a new method for calculating the volume depolarization ratio of light backscattered by the atmosphere and a lidar system that employs an auxiliary telescope to detect the depolarized component. It takes into account the possible error in the positioning of the polarizer used in the auxiliary telescope. The theory of operation is presented and then applied to a few cases for which the actual position of the polarizer is estimated, and the improvement of the volume depolarization ratio in the molecular region is quantified. In comparison to the method used before, i.e., without correction, the agreement between the volume depolarization ratio with correction and the theoretical value in the molecular region is improved by a factor of 2–2.5.
Keywords: lidar system; depolarization channel; calibration; error compensation; depolarizing particles lidar system; depolarization channel; calibration; error compensation; depolarizing particles

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MDPI and ACS Style

Comerón, A.; Rodríguez-Gómez, A.; Sicard, M.; Barragán, R.; Muñoz-Porcar, C.; Rocadenbosch, F.; Granados-Muñoz, M.J. Considerations about the Determination of the Depolarization Calibration Profile of a Two-Telescope Lidar and Its Implications for Volume Depolarization Ratio Retrieval. Sensors 2018, 18, 1807. https://doi.org/10.3390/s18061807

AMA Style

Comerón A, Rodríguez-Gómez A, Sicard M, Barragán R, Muñoz-Porcar C, Rocadenbosch F, Granados-Muñoz MJ. Considerations about the Determination of the Depolarization Calibration Profile of a Two-Telescope Lidar and Its Implications for Volume Depolarization Ratio Retrieval. Sensors. 2018; 18(6):1807. https://doi.org/10.3390/s18061807

Chicago/Turabian Style

Comerón, Adolfo, Alejandro Rodríguez-Gómez, Michaël Sicard, Rubén Barragán, Constantino Muñoz-Porcar, Francesc Rocadenbosch, and María José Granados-Muñoz. 2018. "Considerations about the Determination of the Depolarization Calibration Profile of a Two-Telescope Lidar and Its Implications for Volume Depolarization Ratio Retrieval" Sensors 18, no. 6: 1807. https://doi.org/10.3390/s18061807

APA Style

Comerón, A., Rodríguez-Gómez, A., Sicard, M., Barragán, R., Muñoz-Porcar, C., Rocadenbosch, F., & Granados-Muñoz, M. J. (2018). Considerations about the Determination of the Depolarization Calibration Profile of a Two-Telescope Lidar and Its Implications for Volume Depolarization Ratio Retrieval. Sensors, 18(6), 1807. https://doi.org/10.3390/s18061807

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