Directional infrasound sensing
| DWPI Title: Directional infrasound sensor for determining direction of arrival of infrasound generated by e.g. volcanic eruptions, involves signal processing system for processing sensor signals generated by sensor devices to determine direction of infrasound received by directional infrasound sensor |
| Abstract: A method and apparatus for determining a direction of infrasound. Infrasound is received by a directional infrasound sensor comprising a plurality of channels and a plurality of sensor devices. Each channel in the plurality of channels comprises a single opening at a first end of the channel and a closed end opposite the opening. The opening of each channel in the plurality of channels is pointed in a different direction from the opening of each other channel in the plurality of channels. The plurality of sensor devices includes a sensor device at the closed end of each channel in the plurality of channels. Each sensor device in the plurality of sensor devices is configured to generate a sensor signal in response to pressure. The sensor signals generated by the plurality of sensor devices are processed to determine the direction of the infrasound received by the directional infrasound sensor. |
| Use: Directional infrasound sensor for determining direction of arrival of infrasound generated by natural phenomena such as volcanic eruptions, and human activity such as flight of supersonic aircraft, rocket launches and nuclear and chemical explosions. Uses include but are not limited to earthquakes, bolides and severe storms. |
| Advantage: The sensor processes sensor signals generated by the multiple sensor devices to determine the direction of the infra-structure received by the directional infra sound sensor so as to provide indication of occurrence of natural and anthropogenic events that may be detected and analyzed. |
| Novelty: The sensor (300) has multiple channels (302, 304, 306, 308), where each channel comprises a single opening at a first end of the channel and a closed end opposite to the opening. Multiple sensor devices are arranged at the closed end of each of the channels, where each sensor device generates a sensor signal in response to pressure. A signal processing system processes the sensor signals generated by the sensor devices to determine a direction of infrasound (310) received by a directional infrasound sensor body, where shape of each channel is fractal and each channel is defined by walls made from a material selected from a group of materials consisting of concrete and metal and each sensor device comprises a pressure sensor. |
| Filed: 6/5/2020 |
| Application Number: US16893675A |
| Tech ID: SD 14983.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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