1. “Final Report of NIAG SG167 on Helicopter Operations at Low Altitude Degraded Visual Environment,” (NIAG), NATO Industrial Advisory Group, NIAG-D(2013)0014, AC/225(VL)D(2013)0001, (2013).
2. Applications and challenges for MMW and THz sensors;Sanders-Reed;Micro- and Nanotechnology Sensors, Systems, and Applications VII,2015
3. Automotive Radar – Status and Trends;Schneider,2005
4. Helicopter Near-Field Obstacle Warning System Based on Low-Cost Millimeter-Wave Radar Technology
5. Toward autonomous rotorcraft flight in degraded visual environments: experiments and lessons learned;Stambler,2016