Integrated navigation concealment cheating method based on road constraint

The invention relates to an integrated navigation concealment cheating method based on road constraints. The method comprises the following steps: constructing a concealment constraint condition of a deception route by utilizing the current position of a target to be deception, a navigation route and a road network model, searching the deception route meeting the concealment constraint condition, and constructing a concealment deception signal model of the integrated navigation system, constructing a concealment deception model by using the deception starting point, the starting point of the deception route and the concealment deception signal model; and when the current position of the integrated navigation reaches the cheating starting point, generating a concealment cheating signal by using the concealment cheating model to cheat the target to be cheated, cheating the positioning result of the integrated navigation system to the starting point of the cheating route from the cheating starting point, and dri