Lidar system and method

G - Physics – 01 – S

Patent

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Details

G01S 17/89 (2006.01) G01S 7/497 (2006.01) G01S 7/48 (2006.01)

Patent

CA 2437897

A ground-based method is disclosed which determines the spatial statistics of fragmented and spatially variably dispersed objects in a transmissive medium, by generating a plurality of pulsed beams of laser energy, the beams having selectively variable width and shape; selectively varying the width and shape of the beams; directing the beams toward the dispersed objects; measuring the time and/or phase and intensity of signals returned by the dispersed objects, and calculating the apparent reflectance of the dispersed objects as a function of the range of the dispersed objects for each beam width and beam shape.

L'invention concerne un procédé terrestre déterminant les statistiques spatiales d'objets fragmentés et dispersés de façon variable dans l'espace dans un milieu de transmission, ce qui consiste à générer une pluralité de faisceaux pulsés d'énergie laser, ces faisceaux présentant une largeur et une forme sélectivement variables, à modifier de façon sélective la largeur et la forme de ces faisceaux, à diriger ces faisceaux vers les objets dispersés, à mesurer la durée et/ou la phase et l'intensité des signaux renvoyés par ces objets dispersés et à calculer la réflectance apparente de ces objets dispersés en fonction de leur portée pour chaque largeur et forme de faisceau.

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