Table 1 Delivery time of UFMC guiding flight i in three phases.

From: Integrated optimization of scheduling for unmanned follow-me cars on airport surface

Flight Type

Phase

Regular delivery time (RDT)

Actual delivery time (ADT)

Arrival

1

ETA+LDR-\(t_{i1}\)-UT

RDT-\(\gamma _{i1}\)

Arrival

2

ETA+LDR

RDT-\(\gamma _{i2}\)

Arrival

3

ETA+LDR+\(t_{i2}\)+CRS

RDT-\(\gamma _{i2}+\gamma _{i3}\)

Departure

1

ETD-LUP-\(t_{i2}\)-\(t_{i1}\)-CRS

RDT-\(\gamma _{i1}-\gamma _{i2}-\gamma _{i3}\)

Departure

2

ETD-LUP-\(t_{i2}\)

RDT-\(\gamma _{i2}-\gamma _{i3}\)

Departure

3

ETD-LUP

RDT-\(\gamma _{i3}\)