Multisystem integrated navigation position is the developed direction of the naval-ships navigation, error information integrated account could cause the error of position. In order to achieve the fault detection of information resource, the RBF network fault detection is brought into multisystem integrated position according to the principle of multisystem integrated position. The simulation shows that the navigation source fault signal could be effectively examined by the federated filter fault detection based on RBF network, and improved the ability of integrated navigation position.