IDMR beamforming in the presence of direction-independent array mainfold mismatch

Ernesto Santos; Michael Zoltowski

doi:10.1117/12.668928

12 May 2006 IDMR beamforming in the presence of direction-independent array mainfold mismatch

Ernesto Santos, Michael Zoltowski

Proceedings Volume 6248, Wireless Sensing and Processing; 62480Y (2006) https://doi.org/10.1117/12.668928
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

The output SINR achieved via Indirect Dominant Mode Rejection (IDMR) beamforming is substantially higher than the achieved with other beamforming algorithms. IDMR is based on a parametric estimate of the covariance matrix which is obtained using an estimate of the directions of the dominant sources and assuming that the array manifold is available. In most applications the array manifold is not known precisely and performance of IDMR can be deteriorated. The focus of this paper is to enable the IDMR beamformer to operate in a scenario of direction-independent steering vector mismatch. A modified version of an algorithm introduced by Friedlander is employed to estimate the direction-independent mismatch. Thereafter IDMR is implemented. Simulation analysis reveals that this technique enables IDMR to operate in a scenario of direction-independent manifold mismatch.

Citation Download Citation

Ernesto Santos and Michael Zoltowski "IDMR beamforming in the presence of direction-independent array mainfold mismatch", Proc. SPIE 6248, Wireless Sensing and Processing, 62480Y (12 May 2006); https://doi.org/10.1117/12.668928

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