Device and imaging method utilising synthetic aperture for determining an angle of incidence and/or a distance

摘要

The method involves sensing echo profiles at various aperture points, and calculating one-phase correction value and one-distance correction value for assumed incident angles. Adapted profiles are generated based on the echo profiles by adapting phase by the phase correction value for each assumed angle and by shifting distance by the distance correction value. Probability distribution for the assumed angles is formed from the adapted profiles, and a probability value is determined for each incident angle and the distance from the probability distribution. An independent claim is also included for an apparatus for imaging with a synthetic aperture to determine an incident angle and distance of a sensor from an object.