Abstract
The Davies transformation is a method to transform
the steering vector of a uniform circular array (UCA) to a
vector with Vandermonde form. As this form is similar to
that of the steering vector of a uniform linear array
(ULA), we can apply to UCAs the many tools that have
been developed for ULAs. However, the Davies
transformation can be highly sensitive to perturbations of
the underlying ideal array model. In this paper, we present
two different methods for deriving a more robust
transformation. The main underlying idea is to trade off
robustness against accuracy of the Vandermonde form. In
particular, we consider its application to direction-of-
arrival estimation in the presence of correlated signals
using root Weighted Subspace Fitting (root-WSF). The
effectiveness of these methods are illustrated through
numerical examples.
the steering vector of a uniform circular array (UCA) to a
vector with Vandermonde form. As this form is similar to
that of the steering vector of a uniform linear array
(ULA), we can apply to UCAs the many tools that have
been developed for ULAs. However, the Davies
transformation can be highly sensitive to perturbations of
the underlying ideal array model. In this paper, we present
two different methods for deriving a more robust
transformation. The main underlying idea is to trade off
robustness against accuracy of the Vandermonde form. In
particular, we consider its application to direction-of-
arrival estimation in the presence of correlated signals
using root Weighted Subspace Fitting (root-WSF). The
effectiveness of these methods are illustrated through
numerical examples.
| Original language | English |
|---|---|
| Title of host publication | Nordic Radio Science and Communication Conference, 2002 |
| Pages | 558-562 |
| Number of pages | 5 |
| Publication status | Published - 2002 |
| Externally published | Yes |
| Event | Nordic Radio Science and Communication Conference 2002 - Stockholm, Stockholm, Sweden Duration: 2002 Jun 11 → 2002 Jun 13 |
Conference
| Conference | Nordic Radio Science and Communication Conference 2002 |
|---|---|
| Abbreviated title | RVK 02 |
| Country/Territory | Sweden |
| City | Stockholm |
| Period | 2002/06/11 → 2002/06/13 |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering