研究目的
To present a method to determine the actual velocity even for targets that violate the unambiguous velocity limitation of the stepped-carrier OFDM radar scheme.
研究成果
The stepped-carrier OFDM radar scheme is a realizable variant to a standard OFDM scheme of large baseband bandwidth at the cost of reduced unambiguous velocity. This limitation can partly be solved by exploiting characteristics of the DFT during velocity evaluation which allow to determine the actual velocities of targets that fold into the unambiguous region. The method is applicable in scenarios with few targets or if all targets have a similar velocity.
研究不足
The scheme can only deal with one actual velocity per velocity index and is not able to tell if there are multiple targets of different spectral repetitions at the same position in the range-velocity diagram.
