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Proceedings Paper

Burst illumination imaging lidar: intensity correlation function in the image plane
Author(s): Dimitri Edouart; Pascal Churoux; Pierre H. Flamant
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Paper Abstract

The speckle pattern in the image plane of the burst illumination imaging lidar system is characterized by the intensity correlation function. This speckle pattern, specific to coherent laser light, has two origins: the target roughness and the turbulence perturbation. We propose a model which takes into account both of them. For a non turbulent atmosphere, we find the classic speckle pattern given by Goodman. With a turbulent atmosphere, the perturbation along the forward and backward paths may be coupled or independent. In the coupled turbulence perturbation case, the collected intensity is amplified and the target scintillation is filtered by the receiver. For the independent turbulence perturbation case, the analysis is restricted here to a diffraction-limited atmosphere-lens system and two limiting cases are distinguished: the far-field and near-field assumptions.

Paper Details

Date Published: 29 July 2002
PDF: 9 pages
Proc. SPIE 4723, Laser Radar Technology and Applications VII, (29 July 2002); doi: 10.1117/12.476411
Show Author Affiliations
Dimitri Edouart, ONERA-CERT (France)
Pascal Churoux, ONERA-CERT (France)
Pierre H. Flamant, Ecole Polytechnique (France)


Published in SPIE Proceedings Vol. 4723:
Laser Radar Technology and Applications VII
Gary W. Kamerman, Editor(s)

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