Sound source localization using distributed elevated acoustic sensors

Xiao Di; Ronald A. Wagstaff; John D. Anderson; Kenneth E. Gilbert

doi:10.1117/12.818920

5 May 2009 Sound source localization using distributed elevated acoustic sensors

Xiao Di, Ronald A. Wagstaff, John D. Anderson, Kenneth E. Gilbert

Proceedings Volume 7333, Unattended Ground, Sea, and Air Sensor Technologies and Applications XI; 73330O (2009) https://doi.org/10.1117/12.818920
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Detecting and localizing impulsive acoustic sources in the daytime using distributed elevated acoustic sensors with large baseline separations has distinct advantages over small ground-based arrays. There are generally two reasons for this: first, during the daytime, because of more direct and less encumbered propagation paths, signal levels are generally larger at altitude than near the ground. Second, larger baselines provide improved localization accuracy. Results are reported from a distributed array of acoustic sensors deployed during an experiment near Bourges, France during June of 2008. The distributed array consisted of microphones and GPS receivers attached to the tether lines of three widely separated aerostats. The sound sources were various impulsive devices. Results from the measurements are presented and discussed. Localization errors (GPS accuracy, propagation calculation, and aerostat motion, etc) are discussed. Possible ways to improve the localization accuracy are suggested.

Citation Download Citation

Xiao Di, Ronald A. Wagstaff, John D. Anderson, and Kenneth E. Gilbert "Sound source localization using distributed elevated acoustic sensors", Proc. SPIE 7333, Unattended Ground, Sea, and Air Sensor Technologies and Applications XI, 73330O (5 May 2009); https://doi.org/10.1117/12.818920

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