Abstract: In view of the need to make decision on general aviation dispatch before forest fire disaster relief, and the characteristics that personal subjective experience of decision-makers and objective observation data of fire site are mixed in the decision evaluation process, the main and objective interwoven action and decision-making process were described by establishing a double membership function. The idea of evidence conflict in the evidence theory was used for reference. The hesitant affiliation function projection method was constructed to carve and solve the problem of hesitant orthogonalization in the actual decision-making process. The log-growth weight model was established to describe the timing characteristics of the information transfer in the forest fire, and the dynamic weight of the information was given accordingly. Finally, an example was given to prove the validity of the algorithm.

Key words: safety management engineering, forest fires, general aviation, disaster relief decisions