| 摘要 |
The invention relates to a method of detecting obstacles on board an aircraft while in the vicinity ( 44 ) of a touchdown point ( 27, 42 ), the method comprising the following operations: selecting/determining a path ( 41 ) to be followed by the aircraft overflying the touchdown point; the aircraft overflying the touchdown point following the overflight path, and during the overflight recording signals/data delivered by an on-board rangefinder observing a portion of space extending below the aircraft; analyzing the rangefinder data to detect the presence of obstacles and to determine their positions in a terrestrial frame of reference, where appropriate to determine their dimensions; and recording the detected obstacle position data, and dimensions, if any, in a memory.
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