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

Autor:	Adolfo Comerón, Alejandro Rodríguez-Gómez, Michaël Sicard, Rubén Barragán, Constantino Muñoz-Porcar, Francesc Rocadenbosch, María José Granados-Muñoz
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	lidar system depolarization channel calibration error compensation depolarizing particles Chemical technology TP1-1185
Zdroj:	Sensors, Vol 18, Iss 6, p 1807 (2018)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s18061807
Popis:	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.
Databáze:	Directory of Open Access Journals
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