The invention discloses a low-altitude economic monitoring and collaborative countering method and device. The method comprises the following steps: S1, acquiring original
monitoring data of a flying target; s2, fusing the
monitoring data to generate a target
threat level; s3, executing response operation; according to the invention, through a multi-
modal sensor depth cooperation and Bayesian decision-making multi-
modal data fusion model, a trajectory entropy
evaluation algorithm is introduced, the detection efficiency of unknown targets outside a preset
route is improved, the recognition precision of low-altitude targets is improved, and the supervision requirement of low-altitude economic high-density flight is met; based on a dynamic
threat assessment and countering strategy
decision tree linkage mechanism,
response delay is reduced, collaborative scheduling among equipment is realized, the countering success rate is improved, and accidental damage to cooperative unmanned aerial vehicles is avoided; a
federated learning driven model optimization framework is adopted, so that the
system identification precision is increased along with
deployment time; and good real-
time processing capability is still kept on edge equipment with limited computing power.