Given: | Output of Algorithm 1, ; Extended targets state | estimates , and their labels ; | Track set , Undefined tree set , | Candidate terminated track set . | Propagation and Termination: | , | For | If | | , | , , | . | Else If | {: set of the labels of } | , | , | | : set of the labels of , | . | Else | Track Initiation and Confirmation Steps. | End If | End For | If | , | For | If (i.e. lasts three time steps) | is the time steps that undefined tree lasts} | , | Terminate the track in whose label equals to . | Else | , | , . | End If | End For | , | Update the number of undefined trees . | End If | , | If | tracks in whose labels are the same as , | , | For is the cardinality of set | , | , | , | . | End for | End If |
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