Summaries - Research
Back MEMS Acoustic Sensor for UAV Detection and Localization
|Division||Research & Sponsored Programs|
|Department||NPS Naval Research Program|
Alves, Fabio D.
|Sponsor||NPS Naval Research Program (Navy)|
|Summary||The proposed one-year research effort is to continue exploring the feasibility of MEMS directional acoustic sensor to detect and localize UAVs. Conventional directional sound sensing systems use arrays of spatially separated microphones to achieve directional sensing. The accuracy of the directionality depends on the extent of spatial separation of the microphones making them bulky. Furthermore, current available microphones are operated in broadband regime increasing their vulnerability to interference due to background noise and undesirable acoustic sources. The proposed detection and localization scheme is based on the ear drums of the parasitic fly Ormia ochracea. During the course of the research, acoustic signature of available UAVs will be studied and analyzed. The perennial spectral features will be selected as requirements for modeling, simulation and theoretical evaluation of the spectral response and directionality. The envisioned advantages are many. The Ormia-based MEMS sensors are around 50 times smaller than the sound wavelength they detect and the final system including electronics would be smaller than a square centimeter. Resonant sensors can be much more sensitive than currently available broadband microphones in specific frequencies. Directionality can be achieved with a single sensor and 3D localization can be achieved with a few distributed sensors. At the completion of the research a report will be provided comparing the performance of MEMS directional acoustic sensors with conventional microphones in detecting several different UAVs. In addition, findings of the research will be available in the thesis of the participating NPS graduate students.|
|Publications||Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal|