Single-Body Direction-of-Arrival Sensor

To address the Army need for a seismic sensing system, Physical Optics Corporation (POC) proposes to develop a new Single-body Direction-of-Arrival Sensor (SDOAS) system to estimate direction of arrival (DOA) over distances less than ten meters. The SDOAS system is based on n-fold surface elastic wave measurement with a specially designed sensor platform for accurate and flexible DOA estimation even in environments with multiple polarized sources. The innovations in signal processing algorithms and a single-body sensing platform will enable the SDOAS to calculate the DOA, not bearing, of an incoming seismic surface wave and its magnitude, and to perform event (source) tracking. In Phase I, POC will demonstrate the feasibility of the SDOAS with propagation mode identification and analysis. In Phase II POC plans to design/fabricate fully functional SDOAS hardware and software, optimized to have minimal complexity, and demonstrate the prototype in a real-world environment.