I learned, from an article about the AV-8S Harrier, of a comms/navigation/attack feature wich was implemented in "Matador" aircraft for the Spanish Navy,known as "correcaminos" (roadrunner).
It would have been developed using SAGE and DIANE technology (not sure about the last) wich could have employed the extra antenna those Harriers had, and used to vectorize aircraft into targets while in radio silence, having been employeded succesfuly in exercises with foreign battle groups. Admiral defined the sistem as a "predecessor of Datalink". I couldn´t find anything else on it
Does any of you know anything about this? Could this feature have been present on AV-8C, wich, IIRC, had also the extra antenna? Or any other aircraft using it?