Since its founding in 2003, Shanghai Terjin has been focusing on radio sensing and spectrum big data analytics technology. It provides advanced drone detection, tracking, jamming & spoofing devices using cutting-edge TDOA technology. Our solution includes real-time threat identification, countermeasures, and tailored sensitive area management. And we offer out-of-box solution to meet different needs including system-level TDOA solution, handheld device for solo use, vehicle-mounted device and module for integration.