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Cramer-Rao bounds of direction-of-arrival and distance estimation of a near-field incident source for an acoustic vector sensor: Gaussian source and polynomial-phase source

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1 Author(s)
X. Yuan ; Duke University, Durham, NC, USA

The near-field array manifold of the acoustic vector sensor was recently derived by Wu et al [see `the acoustic vector sensor`s near-field array manifold` in IEEE Trans. Signal Process.]. The CraméŕRao bounds (CRBs) of direction-of-arrival and distance estimation with a single pure tone were also derived therein. This study aims to investigate the estimation accuracy of the acoustic vector sensor in the near-field, through the CRBs analysis, by modelling the incident source as: (i) a Gaussian distributed random sequence, and (ii) a polynomial-phase signal. All the four different compositions of the acoustic vector sensor in the near-field are considered, and their ́closed-forḿ CRBs are derived.

Published in:

IET Radar, Sonar & Navigation  (Volume:6 ,  Issue: 7 )