AeroShield is a drone tracking system consisting of three or more Anritsu Remote Spectrum Monitors (RSM), deployed along the perimeter of an area to be monitored. Software runs on a Windows PC with an Ethernet connection to the three RSMs. AeroShield looks for the video signal sent back from the drone to the controller. When this signal is detected, advanced numerical methods are used to triangulate the position and track the drone as it flies. The algorithms use a Time Difference of Arrival (TDOA) method to locate the drone at each measurement point.

AeroShield is an integral part of a larger drone tracking system, that may include radar, audio, video or other detection and tracking modalities. Each of there methods are simple and straight forward when used independently in ideal settings, but their detection and tracking can be hampered by physical, frequency related obstructions.

High quality cameras can locate and zoom into a drone very effectively. However, common obstacles are nightfall, low contrast backgrounds, and large soaring birds.

RF detecting and tracking is a key part of a solid deployment. RF is not effected from night-fall, low contrast backgrounds, and birds seldom transmit video signals. Also, because of the very high speed of light, the position estimate of the drone can be very accurate. In a multi-component system, RF will often be the first detection and therefore provides the most accurate position estimates that direct the system where to look.