Infrasound direction of arrival determination using a balloon-borne aeroseismometer
Abstract
Free-floating balloons are an emerging platform for infrasound recording, but they cannot host arrays sufficiently wide for multi-sensor acoustic direction finding techniques. Because infrasound waves are longitudinal, the balloon motion in response to acoustic loading can be used to determine the signal azimuth. This technique, called “aeroseismometry,” permits sparse balloon-borne networks to geolocate acoustic sources. This is demonstrated by using an aeroseismometer on a stratospheric balloon to measure the direction of arrival of acoustic waves from successive ground chemical explosions. A geolocation algorithm adapted from hydroacoustics is then used to calculate the location of the explosions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 01, 2022
- Source ID
- 10.1121/10.0010378
Entities
People
- Daniel Bowman
- Elizabeth A. Silber
- Jerry W. Rouse
- Siddharth Krishnamoorthy
Organizations
- California Institute of Technology
- Defense Advanced Research Projects Agency
- National Aeronautics and Space Administration
- National Nuclear Security Administration
- Sandia National Laboratories