Patent ID: 7933002

Claim:
A method for measuring air turbulence by means of a lidar system, in which method a pulsed expanded laser beam ( 12 ) of a predetermined wavelength is emitted to a spatial area, and light backscattered from this spatial area is received, characterised in that at a first point in time t 1 and at a second point in time t 2 after emission of a laser pulse (L) the intensity distribution in the cross-section of the backscattered light is measured, and from the comparison of both intensity distributions the air turbulence in a measuring field defined by the points in time t 1 and t 2 is determined, wherein by way of the respective measuring of the intensity distribution, speckle patterns, which during backscattering of the laser pulse (L) from air molecules and aerosols arise, are detected in the cross-section of the backscattered light, and from the comparison of the speckle patterns the air turbulence is determined.