RF Drone Detection Uses Radio Frequency (RF) Sensors That Passively Listen and Monitor 2.4G 5.8g Frequencies for Transmissions of Drones - China Drone Jammer, Detector | Made-in-China.com
Collaboration creates new drone detector - CONTACT magazine
Drone detection system – Rantelon
Aaronia AARTOS Drone Detection System / Detect and Stop UAV's - YouTube
Anti Drone Radar Technology for Powerful Functions – NqDefense
SkyPatriot Early Warning Optical Drone Detection System – Rinicom