| Paper: | SAM-P4.5 | ||
| Session: | Direction-of-Arrival Estimation | ||
| Time: | Wednesday, May 19, 13:00 - 15:00 | ||
| Presentation: | Poster | ||
| Topic: | Sensor Array and Multichannel Signal Processing: Signal detection and estimation | ||
| Title: | PERFORMANCE ANALYSIS OF DOA ESTIMATION USING UNIFORM CIRCULAR ANTENNA ARRAYS IN THE THRESHOLD REGION | ||
| Authors: | Nick Spencer; CRC for Sensor Signal & Info Processing (CSSIP) | ||
| Yuri Abramovich; Defence Science & Technology Organisation (DSTO) | |||
| Abstract: | We extend our investigations into the region between ''performance breakdown'' (threshold) conditions for subspace-based direction-of-arrival (DOA) estimation techniques and maximum likelihood (ML) DOA estimation for uniform circular antenna arrays. Using a new outlier mitigation technique that can be applied to arbitrary geometry arrays, we demonstrate that subspace-based DOA estimation outliers could be reliably rectified up to the point where erroneous DOA estimates start to generate optimally high likelihood ratios (LRs). This is a manifestation of the onset of a discontinuity in the ML estimation, which cannot be rectified within the ML paradigm. | ||
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