Transmit Subaperturing for MIMO Radars with Co-Located Antennas

Conference: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
06/07/2010 - 06/10/2010 at Aachen, Germany

Proceedings: EUSAR 2010

Pages: 4Language: englishTyp: PDF

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Li, Hongbin (Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA)
Himed, Braham (AFRL/RYRT, 2241 Avionics Circle, Bldg 620, Dayton, OH 45433, USA)

We present a transmit subaperturing (TS) approach for MIMO radars. A TS-MIMO radar offers a continuum of operating modes from the phased-array radar, which achieves the maximum directional gain but least interference rejection ability, to the omni-directional transmission based MIMO radar, which can handle the largest number of interference sources but offers no directional gain. Tuning of the TS-MIMO system can be made by changing the configuration of the transmit subapertures, which provides a direct trade-off between the directional gain and interference rejection power. The output SINR of the TS-MIMO radar is examined in an interference and training limited environment.