US Patent 11181903 Systems and methods of detecting and controlling unmanned aircraft systems

A system includes network nodes, such as, multiple computing devices and multiple software defined radios. The network nodes accurately and timely detects, identifies, locates, and responds to an unmanned aircraft system within a predetermined area. The network nodes use a communications control link between the unmanned aircraft system and a controller of the unmanned aircraft system to detect, identify, locate, and respond to the unmanned aircraft system. The network nodes are deployed over the predetermined area to maintain airspace situational awareness of the unmanned aircraft system, and deploy targeted countermeasures to counteract identified threats associated with the presence of the unmanned aircraft system within the predetermined area.