In order to indicate the sensors’ referents

it is necessary to manage the combination of sensors before cueing-handoff. Establish a multi-sensor target designation handoff dynamic alliance model and prescribes a limit to the referents

in order to make sure the orderly execution under the full consideration of differences of four active sensors

cueing probability and the costs of cueing-handoff. Lastly

by improved particle swarm optimization（ PSO）algorithm to solve model

and the simulation proves rationality and effectiveness of the model.