Angle estimation and ambiguity resolution of radar sensors for motor vehicles with large antenna array

摘要

Angle-resolving radar sensor for motor vehicles, having an antenna arrangement with a plurality of antennas arranged to receive (10, 12), in a direction (y), in which the radar sensor angle-resolving, in different positions (yi) are arranged, and with a control and Evaluation device (30) designed for a mode in which at least one antenna (22) of the radar sensor arranged for transmission transmits a signal which is received by a plurality of antennas (10, 12) of the radar sensor arranged to be received, wherein the control - and evaluation device (30) is adapted in the said mode for a single estimation of an angle (θ) of a radar target for respective evaluation channels (i) corresponding to different configurations of transmitting and receiving antennas (22, 10, 12), respectively to determine the individual distances (di) of the radar target and the individual distances (di) in the estimation of the win kels (θ) of the radar target; and method for doing so.