As discussed, the anti-drone movement is just as popular and growing as the drone upswell. Anti-drone patents are rare though as most companies prefer to keep their technology a trade secret, forcing competitors to reverse engineer their secret sauce. The passage of the Defense of Trade Secrets Act in 2016 has also likely contributed to the preference toward trade secret protection.
XiDrone has joined the anti-drone movement to countermeasure small UAV use. Their recently granted patent, U.S. Patent No. 9,715,009 is directed to a “Deterrent for Unmanned Aerial Systems.” The abstract provides little detail. Essentially, the system detects a drone and analyzes a threat level. Then it either redirects the drone (which may be disclosed as to how in the patent) or destroys it.
The claims provide a good level of detail disclosing how to achieve their countermeasures.
1. A multi-sensor system for providing integrated detection, tracking, and identify/classification against commercial unmanned aerial vehicles comprising: a direction finding high fidelity RF receiver coupled with a receiving omnidirectional antenna and a receiving directional antenna for detecting an RF signature of a flying unmanned aerial vehicle; a spectral signal identifier processor for analyzing the RF signature and identifying spectral signatures of the unmanned aerial vehicle and eliminating electromagnetic clutter; a modified radar system designed for detection of terrestrial (Surface) targets, provided with a radar clutter and target filter processor for providing input to an azimuth and elevation vector coordinate data processor for determining the location of the unmanned aerial vehicle; a signal generator that produces at least one tailored signal based on the spectral signatures of the unmanned aerial vehicle; a variable strength amplifier that generates an output power; an antenna alignment assembly for adjusting the alignment of a transmitting directional and focused antenna based on the location of the unmanned aerial vehicle as determined by the azimuth and elevation vector coordinate data processor; and the signal generator and amplifier coupled with the transmitting antenna to send at least one signal to the unmanned aerial vehicle to alter at least one of the speed, direction and altitude of the unmanned aerial vehicle.
The patent continues to go into detail on how it engages a takeover and prevents sUAS from entering undesired airspace. It’s unclear what products Xidrone offers and how the patent covers the product. This patent is one of two issued US Patents to Xidrone and is accompanied by one published application. Fig 1A is reproduced below for some additional detail.