| Paper: | SAM-P3.3 | ||
| Session: | Beamforming and Space-Time Processing | ||
| Time: | Wednesday, May 19, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Sensor Array and Multichannel Signal Processing: Beamforming, direction-of-arrival estimation, and space-time adaptive processing | ||
| Title: | A NOVEL PARTIAL ADAPTIVE BROAD-BAND BEAMFORMER USING CONCENTRIC RING ARRAY | ||
| Authors: | Yunhong Li; University of Missouri-Columbia | ||
| K. C. Ho; University of Missouri-Columbia | |||
| Chiman Kwan; Intelligent Automation, Inc. | |||
| Abstract: | The design of an adaptive concentric ring array for broad-band beamforming is a challenge due to the large number of adapting coefficients. In this paper, the concept of setting the weights among different rings to enhance the beamformer output is used to design a partial adaptive ring array for applications in non-stationary signal environment. We decompose the weights of the array into two components: the weights for each ring element and the weights for each ring. The partial adaptive array is obtained by setting the weight for each receiving element based on a priori knowledge of the Direction Of Arrival (DOA) of the desired signal, and only the weights for each ring are adapted in realtime. The partial array design results in fast convergence rate, better performance and reduction in computation compared to a fully adaptive array. Experimental results demonstrate the advantage of the partial adaptive array design. | ||
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