METHOD FOR SEPARATING TRANSMITTED SIGNALS IN A RADAR SYSTEM
First Claim
1. A method for separating transmitted signals in a radar system that includes multiple transmitting antennas with individual transmitted signals and one or several receiving antennas for radar signals, in which the radar signals are transmitted with a signal bandwidth via the individual transmitting antennas in such manner that received radar signals can be assigned to the transmitting antennas by which they were transmitted,wherein the transmitted signals are shared among multiple subcarriers by means of OFDM, which subcarriers are assigned to the transmitting antennas according to a distribution scheme in which each subcarrier is assigned to one transmitting antenna only and in which the subcarriers assigned to each transmitting antenna are spread over the entire signal bandwidth.
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Accused Products
Abstract
The present invention relates to a method for separating transmitted signals in radar systems and an associated radar system. In the method, the signals for transmission are shared among multiple subcarriers by means of OFDM, which subcarriers are assigned to the transmitting antennas according to a distribution scheme. In this distribution scheme, each subcarrier is assigned to one transmitting antennas only. The subcarriers assigned to a given transmitting antenna are spread over the entire signal bandwidth. In this way, very high dynamics may be achieved while retaining complete orthogonality of the signal paths.
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Citations
9 Claims
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1. A method for separating transmitted signals in a radar system that includes multiple transmitting antennas with individual transmitted signals and one or several receiving antennas for radar signals, in which the radar signals are transmitted with a signal bandwidth via the individual transmitting antennas in such manner that received radar signals can be assigned to the transmitting antennas by which they were transmitted,
wherein the transmitted signals are shared among multiple subcarriers by means of OFDM, which subcarriers are assigned to the transmitting antennas according to a distribution scheme in which each subcarrier is assigned to one transmitting antenna only and in which the subcarriers assigned to each transmitting antenna are spread over the entire signal bandwidth.
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5. A radar system comprising at least one transmitting device for radar signals, multiple transmitting antennas, at least one receiving device for radar signals, and one or several receiving antennas,
in which the transmitting device is designed in such manner that it transmits the radar signals with a signal bandwidth via the individual transmitting antennas in such manner that received radar signals can be assigned to the transmitting antennas by which they were transmitted in the receiving device, wherein the transmitting device is designed such that it shares the transmitted signals among multiple subcarriers by means of OFDM, and assigns the subcarriers to the transmitting antennas according to a distribution scheme in which each subcarrier is assigned to one transmitting antenna only and in which the subcarriers assigned to each transmitting antenna are spread over the entire signal bandwidth, and that the receiving device is designed such that it assigns the received radar signals to the transmitting antennas by which they were transmitted on the basis of the subcarriers received and the distribution scheme.
Specification