MIMO concept for the imaging radar of the radar warning and information system RAWIS

This paper presents the MIMO (Multiple Input Multiple Output) concept for the main radar system of RAWIS. The MIMO radar will offer a three dimensional resolution due to a two dimensional MIMO array topology. The MIMO array will be realized by 24 transmit and 32 receive elements in a special spatial configuration that 768 independent virtual antenna elements in a hexagonal arrangement can be synthesized. Always four used waveforms will be transmitted simultaneously providing a short time orthogonality to shift the ambiguities in the cross-correlation out of the range of interest.