. "2" . "POS22" . "80km1m (resolution 0.1m)Family of microwave short-range positioning systems with vessel equipment and three shore transponders (master and two slaves) set up specifically for surveys." . . "POS22" . . "15-SEP-10" . "Trisponder" . "POS22" . "2" . "Trisponder navigation systems"@en . "accepted" . .