Conference Title: 2022 56th Asilomar Conference on Signals, Systems, and ComputersConference Start Date: 2022, Oct. 31 Conference End Date: 2022, Nov. 2 Conference Location: Pacific Grove, CA, USAMoving interferers with different speeds create different bearing rates while crossing the resolution cells of a uniform linear array. The notches in MVDR's beampattern do not track moving interferers well. One approach to handle this problem is to make a broader and flatter notch by applying a Covariance Matrix Taper (CMT). The CMT increases the notch width by a fixed amount at each interferer location. In practice, the bearing rate of a moving interferer is unknown and may also change over time. Different bearing rates will require different notch widths and a single fixed CMT width will not be able to suppress all moving interferers perfectly. The need for different notch widths leads us to the possibility of designing a universal adaptive beamformer for the notch width. This paper processes data from a microphone array to demonstrate that the proposed universal CMT algorithm rivals the performance of the best fixed notch width CMT beamformer in a set.
- Covariance Matrix Tapered Beamformer That Is Universal Over Notch Width
- Savas Erdim - University of Massachusetts DartmouthJohn Buck - University of Massachusetts DartmouthC Berg - University of Massachusetts Dartmouth
- The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Conference Proceedings, Vol.2022-, pp.1413-1418
- The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
- English
- Department of Electrical and Computer Engineering
- Conference proceeding
- 1665459069; 9781665459068; 1665459069; 9781665459068
- 9914419636401301