公开(公告)号：US10585186B2

公开(公告)日：2020-03-10

申请号：US15034371

申请日：2014-11-07

Applicant: THALES

Inventor： Pascal Cornic ,  Patrick Le Bihan ,  Yves Audic

IPC: G01S13/93 ,  G01S13/90 ,  G01S13/34 ,  G01S13/931

Abstract: A radar attached laterally to airplane fuselage to detect obstacles on a collision course with a portion of the airplane facing the radar. The radar includes an emission antennal channel and reception antennal channels in the same plane. The radar Establishing in a radar coordinate system a first distance/Doppler map allowing echoes to be separated into distance and Doppler resolution cells in reception antennal channels; Establishing a second distance/Doppler map of smaller size by selecting a subset of distance/Doppler resolution cells corresponding to possible positions of targets liable to collide with the airplane; Establishing new distance/Doppler maps by forming beams computationally from the subsets of distance resolution cells; and Temporal integration, in each beam, of successive distance/Doppler maps.

公开(公告)号：US10585183B2

公开(公告)日：2020-03-10

申请号：US15649374

申请日：2017-07-13

Applicant: THALES

Inventor： Pascal Cornic ,  Yves Audic ,  Stéphane Kemkemian

IPC: G01S13/60 ,  G01S13/46 ,  G01S13/93 ,  G01S13/931 ,  G01S13/00

Abstract: Radar equipped with a transmission antenna array and with a reception antenna array is provided, the measurement of the height h2 is obtained by estimating the frequency of at least one time-dependent amplitude modulation produced on the reception antenna array, the modulation generated by the interference of the signals received directly from the target and the signals received after reflection on the ground, on the basis of the signals transmitted by the transmission antenna array.