Conference proceeding
Ula delay-and-sum beamforming for plume source localization
2007 IEEE Workshop on Signal Processing Applications for Public Security and Forensics, pp.152-155
01 Jan 2007
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Estimating the direction of a diffusive source is a difficult problem, and little has been tried to estimate a chemical source subject to turbulence. Turbulence must be addressed if chemical localizer systems are to be effective for real-world implementation. Previously, we show that a cross-correlation method is a simple and effective way to determine the direction-of-arrival of a single chemical source subject to turbulence. Now, we examine the performance of a uniform linear array (ULA) delay-and-sum beamformer to find and track the direction-of-arrival of a chemical. Due to the time-varying gain from the beamformer, we are better able to examine the modulated (von Karman vortex street) plume. We show that the delay-and-sum beamformer has the best results if it is parallel to the direction of propagation and that localization begins to degrade when the array is at a wide angle to the plume, due to non-rectilinear flows and dissipation outside the streamline. Yet, we show that a ULA beamformer gives dynamic information about the plume that can be used for direction-of-arrival (DOA) tracking, in addition to estimation.
Metrics
5 Record Views
Details
- Title
- Ula delay-and-sum beamforming for plume source localization
- Creators
- Gail L. Rosen
- Publication Details
- 2007 IEEE Workshop on Signal Processing Applications for Public Security and Forensics, pp.152-155
- Conference
- 2007 IEEE Workshop on Signal Processing Applications for Public Security and Forensics
- Publisher
- IEEE
- Number of pages
- 4
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Identifiers
- 991019170151504721
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Web of Science research areas
- Engineering, Electrical & Electronic
- Remote Sensing