Single antenna power measurements based direction finding with incomplete spatial coverage
Journal
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISBN
9781467300469
Date Issued
2012-10-23
Author(s)
Abstract
This paper consider the problem of relaxing the spatial coverage requirement on the mechanical rotation in the direction finding (DF) approach based on the received power measurements from single antenna pointing to different directions. Under incomplete spatial coverage, we show that the least square (LS) solution used to transform the problem into its spectral form is no longer accurate due to its ill-conditioned system matrix. To overcome this, we propose an approach based on spatial remodeling of the spatial power measurements such that its spatial periodicity can be adjusted according to the spatial coverage. The approach also incorporates the Tikhonov regularization in calculating the LS solution based on the new system matrix. Upon arriving at the new spectral form, the Cadzow-annihilating filter method can then be used to estimate the direction-of-arrival. Both simulation and experimental results are presented to show the efficacy of the proposed method. © 2012 IEEE.
Subjects
annihilating filter | Cadzow denoising | direction-of-arrival | single antenna direction finding
Type
conference paper