Abstract
Angle estimation for a bistatic MIMO radar system based on Unitary Esprit techniques is proposed in this study. The algorithm exploits the dual invariance in distinct directions and centrosymmetry of the bistatic MIMO radar system to provide real valued computations and automatically paired Directions of Departures (DOD) and Directions of Arrival (DOA) estimates. Simulation results show the effectiveness of this method.
Highlights
There has been a surge in the study of MIMO radar systems recently following successes in MIMO communications (Bekkerman and Tabrikian, 2006)
The target can be viewed from different angles, achieving spatial diversity and smoothens out Radar Cross Section (RCS) fluctuations often seen by phased array systems (Haimovich et al, 2008)
The invariance equation to compute the Directions of Arrival (DOA) is obtained as: we perform simulations to evaluate the performances of the algorithm proposed in this study
Summary
There has been a surge in the study of MIMO radar systems recently following successes in MIMO communications (Bekkerman and Tabrikian, 2006). The other architecture, called collocated MIMO has both the transmit and receive array antennas closely spaced for detection and direction finding purposes (Fisher et al, 2004; Bekkerman and Tabrikian, 2006). Duofang et al (2008) applied the subspace based ESPRIT algorithm to the bistatic MIMO radar system by exploiting the dual invariance property of the transmitting and receiving arrays This produced two rotational matrices whose eigenvalues correspond to the DODs and DOAs. But an additional pairing algorithm to match the DODs to the DOAs is required.
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