Patent ID: 9140788
Filing Date: 2015-09-22
Classification: G01S

Abstract:
1. A method for ascertaining a capability of a controlled vehicle to drive over a target object, the method comprising: transmitting multiple frequency-modulated radar signals in different frequency ranges from a radar sensor of the controlled vehicle; determining amplitude ratios between received radar signals reflected from the target object, the received radar signals corresponding to the radar signals transmitted in different frequency ranges; detecting, based on the determined amplitude ratios, an occurrence of interference between (i) a first radar signal propagation path between the radar sensor and the target object, and (ii) a second, indirect propagation path between the radar sensor and the target object, the second propagation path including an additional reflection from a road; and ascertaining, based on the detection of the occurrence of interference, an indicator for the capability of the controlled vehicle to drive over the target object.