Ground-Air Traffic Congestion Propagation Model Based on Hierarchical Control Interdependent Network

Figure 7

FD in pudong AS: (a) FD; (b) PretTTD-PoldTTD-frequency relationship; (c) PretTTD-PretTS-PoldTS relationship; (d) PoldTTD-PretTS-PoldTS relationship.

(a)

(b)

(c)

(d)