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Orthogonal Waveforms for FMCW MIMO Radar

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Author: Wit, J.J.M. de · Rossum, W.L. van · Jong, A.J. de
Type:article
Date:2011
Source:IEEE 2011 Radar Conference (RADAR), 23-27 May 2011, Kansas City, MO, USA, 686 - 691
Identifier: 431026
doi: doi:10.1109/RADAR.2011.5960625
Keywords: Radar · Physics & Electronics · RT - Radar Technology ; NI - Nano Instrumentation · TS - Technical Sciences

Abstract

Multiple input/multiple output (MIMO) radar system performance benefits from the capability to simultaneously transmit and receive multiple orthogonal waveforms. For pulse radars fitting orthogonal waveforms have been developed. These waveforms are however not necessarily suitable for frequencymodulated continuous-wave (FMCW) radar. The major benefit of the FMCW radar principle is that the bandwidth of the beat signal is generally much smaller than the signal bandwidth, relaxing sampling requirements. Preferably, this benefit should be preserved when applying orthogonal waveforms in an FMCW MIMO radar configuration. In this paper, orthogonal waveforms compatible with the FMCW radar principle will be discussed and tested by experiment or simulation.