Abstract:

Exploiting non-cooperative transmissions, such as multiple commercial FM radio stations or television stations, to passively detect and track airborne targets, the passive surveillance technology is becoming a promising research field. One of the key problems for the passive surveillance system is to determine the effective location method. The location principle utilizing the time-difference-of-arrival (TDOA) and angle-of-arrival (AOA) is discussed and the location precisions for airborne targets are analyzed. Particularly, the location precisions for two kinds of passive surveillance systems utilizing FM broadcast and TV signals respectively are evaluated. The obtained results are of great importance for the design and realization of the locating system.