Re: Obviously not GPS jamming
About 30 years ago I went to a talk about problems encountered during the Falklands war. The carrier based aircraft used INS type location systems as did the ships themselves. The planes had to be calibrated back at base in the UK which was fine normally as they were intended for a war in Europe. When they went on sorties in the South Atlantic and with poor visibility the drift on their inertial systems meant they had great difficulty finding the carrier. Not good when you are running low on fuel. Apparently the ship board systems could not talk to the planes to enable a reset of the gyros.