RADARSYSTEM MIT VERSCHACHTELT SERIELLEM SENDEN UND PARALLELEM EMPFANGEN

    公开(公告)号:EP3377915A1

    公开(公告)日:2018-09-26

    申请号:EP16815703.0

    申请日:2016-11-08

    摘要: The invention relates to a method for the environmental detection of a vehicle, the method comprising the following steps: emitting transmission signals using N2≥2 transmit antennas, wherein in each case, the considered transmission signals consist of a sequence of NSxNP of identical or similar single signals, receiving transmission signals reflected off objects using NE>=2 receive antennas, and processing the received signals, characterized in that in each case, transmitting is done on only one of the NS transmit antennas, wherein from single signal to single signal, the transmit antenna used alternates cyclically, and within each of the NP periods of the cyclical transmit antenna alternation, the temporal progression is at least approximately the same. In order to receive single signals reflected off objects, all considered NE receive antennas are always used in parallel. Each of the NP received single signals are accumulated in proper phase for the NSxNE different combinations of transmit and receive antennas to one or more relative speed hypotheses of objects. By way of said NSxNE accumulated values, each belonging to the same relative speed hypothesis, from different combinations of transmit and receive antennas, a digital beam forming is carried out, and those phase differences are thereby taken into consideration that arise between the receiving signals to the different transmit antennas due to the temporal offset because of the cyclical transmit antenna alternation, and which depend on the respective relative speed hypothesis.