Vehicle counting and classification algorithms for unattended ground sensors

Myron E. Hohil; Jeffrey R. Heberley; Jay Chang; Anthony Rotolo

doi:10.1117/12.488127

18 September 2003 Vehicle counting and classification algorithms for unattended ground sensors

Myron E. Hohil, Jeffrey R. Heberley, Jay Chang, Anthony Rotolo

Proceedings Volume 5090, Unattended Ground Sensor Technologies and Applications V; (2003) https://doi.org/10.1117/12.488127
Event: AeroSense 2003, 2003, Orlando, Florida, United States

Abstract

Unattended ground sensor technology used for battlefield awareness and other wide area surveillance applications requires state-of-the-art algorithms to address the unprecedented challenges faced in detecting, classifying and tracking military combat vehicles. The performance of traditional acoustic sensor systems often degrades unacceptably against the dynamic and highly mobile multiple target environments in which today's forces must operate. In the present work, a target counting algorithm has been developed to solve problems attributed to unstable tracking performance by resolving track loss deficiencies inherent to closely spaced target environments. The algorithm provides a way to discriminate between vehicles as they pass through an acoustic "trip-line" formed by a sensor in a predetermined field of view (FOV). The proposed approach is realized through an adaptive beamforming algorithm that achieves enhanced directivity in a principal look direction by significantly reducing the effects of interferers outside the precise bearing of the steering direction. The classification algorithm described herein facilitates a minimal representation for features extracted from harmonically related structures characteristic to acoustic emissions from ground vehicles found in battlefield environments. The reduced feature space representation exploits an ordering for the principal narrowband components found in a vehicle's engine noise and has proven effective in solving fundamental problems associated with discriminating between vehicles in variable SNR environments. The performance of the algorithms is demonstrated using signature data collected during various acoustic sensor field test experiments.

Citation Download Citation

Myron E. Hohil, Jeffrey R. Heberley, Jay Chang, and Anthony Rotolo "Vehicle counting and classification algorithms for unattended ground sensors", Proc. SPIE 5090, Unattended Ground Sensor Technologies and Applications V, (18 September 2003); https://doi.org/10.1117/12.488127

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available