Distance measuring method and distance measuring element for...

G - Physics – 01 – S

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G01S 17/89 (2006.01) G01S 7/487 (2006.01) G01S 17/10 (2006.01)

Patent

CA 2650235

A distance measuring method for detecting the spatial dimension of at least one target by at least one emission of a multiplicity of light pulses, in particular laser light, towards the target, detecting the light pulse scattered back by the target by means of a multiplicity of distance measuring pixels and eliminating the distance to the target for each pixel, wherein each light pulse can be detected within a measuring interval T i from at least two partial intervals t i,j and the detection of at least one repetition constitutes a detection step performed in at least two stages wherein the measuring interval T i is shortened from stage to stage.

L'invention se rapporte à un procédé de mesure de distance permettant la détermination de la dimension spatiale d'au moins une cible avec au moins une émission d'une pluralité d'impulsions lumineuses, en particulier de lumière laser, sur la cible, la détection des impulsions lumineuses réfléchies par la cible à l'aide d'une pluralité de points d'images mesurant la distance, la déduction d'une distance à la cible pour chaque point d'image. Selon ce procédé, chaque impulsion lumineuse est détectée à l'intérieur d'un intervalle de mesure T i constitué d'au moins deux intervalles partiels t i,j et ladite détection comporte une étape de détection répétée au moins une fois, réalisée en au moins deux étapes, et ledit intervalle de mesure T i est réduit d'étape en étape.

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