DETECTING AND LOCALIZATION METHOD OF UNKNOWN SIGNAL USING AIRCRAFT WITH ADS-B SYSTEM

摘要

PURPOSE: A method for detecting the location of an unknown signal a generation source using an aircraft where an ADS-B(Automatic Dependent Surveillance-Broadcast) system is mounted is provided to quickly and accurately detect the location of unknown signals and a generation source by excluding the influence of signal diffraction or reflection. CONSTITUTION: Multiple aircrafts in flight where an ADS-B system is mounted receive GNSS(Global Navigation Satellite System) signals, transmitted from navigation satellites and a generation source of unknown signals, and the unknown signals, and transmit the received signals to an air traffic control center through the ADS-B system(S100). The air traffic control center detects whether unknown signals are included in the received signals by using either TDOA(Time Difference Of Arrival) technique, TOA(Time Of Arrival) technique, or AOA(Angel Of Arrival) technique(S200). If unknown signals are included, the generation source location of the unknown signals is estimated by using either TDOA(Time Difference Of Arrival) technique, TOA(Time Of Arrival) technique, or AOA(Angel Of Arrival) technique(S300). The estimated information about the unknown signals and the generation source location of the unknown signals is transmitted from ADS-B ground equipment to nearby aircrafts and the air traffic control center through the FIS-B(Flight Information Services-Broadcast) or NOTAM(Notice To Airmen)(S400). [Reference numerals] (S100) Signal obtaining step; (S200) Unknown signal detecting step; (S300) Unknown signal generation source location estimating step; (S400) Unknown signal generation information transmitting step