A method for detecting ground obstacles from an airborne platform characterised by comprising: - a step of illuminating the whole field of view of interest with an electromagnetic wave in the range of 0.1 to 100 GHz having a transmit signal bandwidth of more than 50 MHz; - a step of receiving the echoes with multiple antenna elements (ANT RXi,j) from the whole field of interest and of transforming said echoes into a digital signal (rd i,j) per antenna element; - a step of combining said digital signals simultaneously in order to obtain simultaneously multiple beams (b i,k) covering the whole field of interest using spatial transformation processing; - a step of Range and Velocity filtering each beam in parallel; said method being further characterized in that said range and velocity filtering is applied during a long integration time of more than 100ms so that a given obstacle is observed at different distances during this time, and in that it further comprises: - a step of applying on each filtered beam a detection process using a threshold on amplitude to detect potential ground obstacles; and - a step of discriminating ground obstacles from said potential ground obstacles in a range velocity diagram, the discrimination using velocity of the airborne platform and being based on the obstacle height or elevation constituting its specific signature in terms of both relative velocity and distance wherein: - the obstacle height or elevation at a given range corresponds to a specific relative velocity which is distinct from that of same range obstacles of lower height; and - the obstacle height or elevation at a given relative velocity corresponds to a specific range which is distinct from that of same relative velocity obstacles of lower height. - a step of illuminating the whole field of view of interest with an electromagnetic wave in the range of 0.1 to 100 GHz having a transmit signal bandwidth of more than 50 MHz; - a step of receiving the echoes with multiple antenna elements (ANT RXi,j) from the whole field of interest and of transforming said echoes into a digital signal (rd i,j) per antenna element; - a step of combining said digital signals simultaneously in order to obtain simultaneously multiple beams (b i,k) covering the whole field of interest using spatial transformation processing; - a step of Range and Velocity filtering each beam in parallel; - a step of applying on each filtered beam a detection process using a threshold on amplitude to detect potential ground obstacles; and - a step of discriminating ground obstacles from said potential ground obstacles in a range velocity diagram, the discrimination using velocity of the airborne platform and being based on the obstacle height or elevation constituting its specific signature in terms of both relative velocity and distance wherein: - the obstacle height or elevation at a given range corresponds to a specific relative velocity which is distinct from that of same range obstacles of lower height; and - the obstacle height or elevation at a given relative velocity corresponds to a specific range which is distinct from that of same relative velocity obstacles of lower height. - the obstacle height or elevation at a given range corresponds to a specific relative velocity which is distinct from that of same range obstacles of lower height; and - the obstacle height or elevation at a given relative velocity corresponds to a specific range which is distinct from that of same relative velocity obstacles of lower height.