Small Unmanned Air Vehicle Magnetic-Field Sensors

The ongoing conflicts in Iraq and Afghanistan have highlighted the benefits and limitations of small unmanned aircraft systems (UAS) operated by front-line combat units and special operations forces. The real-time imagery provided by narrow field of view electro-optical or infrared (EO/IR) cameras installed on small UAS significantly improves situational awareness without exposing soldiers to direct fire. However, these aircraft are limited to operation in segregated airspace at altitudes that prevent collisions with power lines, buildings or uneven terrain and cannot detect activity inside buildings, caves or tunnels. Magnetic field sensors installed on small UAS can be used to detect power lines, building wiring, hidden electrical power sources, and possibly other aircraft. An important step in developing this capability is the suppression of electromagnetic interference (EMI) produced by the aircraft electronics to maximize sensor performance. The proposed SBIR program will leverage SARA"s experience in the development, integration and testing of magnetic field sensors on UAVs gained during DARPA"s Low Altitude Airborne Sensor System (LAASS) program. During Phase I we will evaluate the potential effectiveness of candidate sensor system designs and signal processing algorithms, laying the foundation for development and demonstration of a prototype system during Phase II.