Publication Date


Document Type


Committee Members

Mike Bryant (Committee Member), Fred Garber (Committee Member), Brian Rigling (Advisor)

Degree Name

Master of Science in Engineering (MSEgr)


Detection of small aircraft visually or with radar sensors is difficult due to its small size, low-velocity, and low radar cross section. This effort investigates the detection and localization of small aircraft using an acoustic array. The acoustic array was fabricated using low-cost commercial off-the shelf (COTS) hardware that is mobile and can adapt to different signatures and deployment environments. A cross-correlation method for calibration and delay-and-sum beamforming was performed. A generalized likelihood ratio test (GLRT)-based energy detector and a GLRT-based sinusoidal signal detector was applied after beamforming. Detection was also performed using various subpace adaptive beamforming techniques including MUSIC, min-norm, and SSMUSIC which first performed sinusoidal filtering followed by adaptive beamforming. Constant false alarm rate (CFAR) detectors were used to compare all algorithms.

Page Count


Department or Program

Department of Electrical Engineering

Year Degree Awarded