Near Field Targets Localization Using Bistatic MIMO System with Spherical Wavefront Based Model
Résumé
This paper proposes a subspace based near field
targets localization method with bistatic MIMO system consisting
of uniform linear transmitting and receiving arrays.
The proposed method uses the spherical wavefront based exact
model to avoid the systematic error introduced by the Fresnel
approximation, which is usually made on the wavefront to
simplify the signal model for a near field source in the existing
literature on near field sources localization. By avoiding this
approximation, we have significantly improved the estimation
accuracy. Additionally, unlike most of the existing near field
sources localization techniques, the proposed method works for
the array with interelement spacing greater than a quarter of
the carrier wavelength.