Patent ID: 8665137
Filing Date: 2014-03-04
Classification: G01S,H01Q

Abstract:
1. A radar system for recording the environment of a motor vehicle, comprising: a number N a number N signal processing circuitry connected and adapted for processing the received signals; characterized in that the antennas are arranged so that a phase center of at least one receiver antenna does not lie, with regard to a spatial direction R, outside phase centers of two transmitter antennas that are offset in said spatial direction, the signals received by said receiver antenna are separated according to the two portions originating from said two transmitter antennas, received signals from different combinations of the N with regard to the spatial direction S which runs perpendicular to the spatial direction R, the position of the relative phase centers of these combinations of transmitter antennas and receiver antennas varies periodically with the period length P, if a sequence of these combinations of transmitter antennas and receiver antennas is considered, which is arranged in the spatial direction R with regard to the position of the relative phase centers, and in the signal processing circuitry it is utilized that the received signals of an object dependent on its angular position in the spatial direction S have a phase portion alternating periodically with the period length P over the combinations of transmitter and receiver antennas arranged in such manner, whereby for this spatial direction S assertions regarding the angular position of objects and/or regarding a misalignment of the radar system are possible.