Master-slave cooperative guidance system fault location and fault tolerance method in communication interference environment

The invention provides a master-slave cooperative guidance system fault positioning and fault tolerance method in a communication interference environment, and effective positioning and fault tolerance can be carried out on a communication link error information injection fault in a cooperative guidance system through the method designed by the invention. Constructing a distributed observer according to the cooperative variables of the master-slave cooperative guidance system; secondly, calculating a consistency error and an absolute error output based on an observer state; thirdly, evaluating a confidence coefficient of each node of the collaborative guidance system and a trust coefficient of each node to a communication link of a neighbor node of the node; and finally, giving a fault-tolerant collaborative guidance law. Therefore, effective positioning of node faults or communication link faults of the master-slave multi-aircraft cooperative guidance system in a communication interference environment is rea