Underwater inspection robot navigation method and system

The invention discloses an underwater inspection robot navigation method and system, and relates to the technical field of underwater navigation, the technical key points of the scheme are as follows: dividing a target inspection area into a plurality of sub-areas, and calculating the abnormal event occurrence distribution data of the target inspection area according to the abnormal event data of the target inspection area and the abnormal event occurrence distribution data of the sub-areas; calculating to obtain an abnormal event occurrence probability of the sub-region, and calculating to obtain an abnormal event occurrence coefficient of the sub-region in combination with the area of the sub-region; performing time sequence analysis on the underwater environment index data of the sub-region to obtain a change rate of the underwater environment index data, calculating to obtain an underwater environment abnormal coefficient of the sub-region, associating an abnormal event occurrence coefficient of the sub-r