| Paper: | SAM-P3.6 | ||
| Session: | Beamforming and Space-Time Processing | ||
| Time: | Wednesday, May 17, 10:00 - 12:00 | ||
| Presentation: | Poster | ||
| Topic: | Sensor Array and Multichannel Signal Processing: Adaptive beamforming and direction of arrival estimation | ||
| Title: | IDMR beamforming under direction-independent steering vector mismatch | ||
| Authors: | Ernesto Santos, Michael D. Zoltowski, Purdue University, 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. | ||
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