Zones Constraints

Zones constraints enable you to define geographic areas where access is or is not allowed, using inclusion and exclusion zones. The table below describes the possible options

When an access involves a child object (i.e., sensor, transmitter, receiver, antenna, or radar), use the child object's parent or grandparent in the table below to determine whether the constraint can be used for access to that child object. For example, if a constraint can be used for accesses to all vehicles, then that constraint can also be used for any child object of a vehicle.

In the following table, abbreviations in the Constraints used for accesses to... column are:

F = facility	Pl = place	T = target	V = all vehicles	S = satellite	M = missile	L = launch vehicle
A = aircraft	Sh = ship	AT = area target	LT = line target	P = planet	St = star

Constraint	Description	Constraint used for accesses to...
Exclusion Zones	Use the options in the Exclusion Zones area to specify regions that should be excluded from access calculations. Values set here serve as the perimeter points for the zone to be excluded. STK forms exclusion zones on the basis of the values entered. Specify minimum and maximum latitude and longitude in the Constraint Properties section.	F, T, Pl, V, P, St, AT, LT
Inclusion Zone	Use the Inclusion Zone area to define a region that STK will include in access calculations, to the exclusion of all other regions. You can only have one inclusion zone constraint for an object. Specify minimum and maximum latitude and longitude in the Constraint Properties section.	F, T, Pl, V, P, St, AT, LT
Latitude	This option is available because of backward compatibility needs. AGI recommends that you use the the Inclusion Zone constraint and specify latitude bounds in its Constraint Properties section. Use the options in the Latitude area to indicate latitude boundaries. You can specify a latitude boundary within which accesses to the vehicle must fall in order to be valid. Specify the Minimum and Maximum latitude values to define the latitude boundary.	F, T, Pl, V, P, St, AT, LT

Constraint

Description

Constraint used for accesses to...

Exclusion Zones

Use the options in the Exclusion Zones area to specify regions that should be excluded from access calculations. Values set here serve as the perimeter points for the zone to be excluded. STK forms exclusion zones on the basis of the values entered. Specify minimum and maximum latitude and longitude in the Constraint Properties section.

F, T, Pl, V, P, St, AT, LT

Inclusion Zone

Use the Inclusion Zone area to define a region that STK will include in access calculations, to the exclusion of all other regions. You can only have one inclusion zone constraint for an object. Specify minimum and maximum latitude and longitude in the Constraint Properties section.

F, T, Pl, V, P, St, AT, LT

Latitude

This option is available because of backward compatibility needs. AGI recommends that you use the the Inclusion Zone constraint and specify latitude bounds in its Constraint Properties section.

Use the options in the Latitude area to indicate latitude boundaries. You can specify a latitude boundary within which accesses to the vehicle must fall in order to be valid. Specify the Minimum and Maximum latitude values to define the latitude boundary.

F, T, Pl, V, P, St, AT, LT

You can change the Minimum and Maximum settings at will, though the changes will not be reflected in your scenario until you click OK or Apply in the object's Properties Browser.