PURPOSE: To correctly monitor and check the operation situation of the whole system concerning the system monitoring processing system of a hyperbolic navigation system to monitor and check the system operation situation of the hyperbolic navigation system.

CONSTITUTION: In the hyperbolic navigation system of which constitution is that slave stations 20 provided by two respectively transmit a radio wave sent from a master station 10 with a shift corresponding to a specific phase quantity and the navigation position of moving objects such as a ship, etc., is decided in accordance with the radio wave transmitted by the master station 10 and the slave stations 20, a line means 30 consisting of a radio or a wire is provided between the master station 10 and the slave stations 20, the slave stations 20 is provided with a collection means 23 collecting operation information of itself and the other slave station, and the master station 10 monitors the collection result of the collection means 23 of the slave stations 20.