Spacecraft.ContactTimes(GroundStation) Method

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Description

Contact is determined when the line of sight is within the contactGroundStation masking.

The ContactTimes method will account for refraction if refraction modeling is turned on using the GroundStation.RefractionModelType property.

Timing Precision Mode

This page describes functionality in nanosecond timing precision mode.

Click here to see the documentation for this object in millisecond timing precision mode.

Note: This is an interval method. See the Interval Methods page for more information.

Note: This method has a state. See the Methods and Properties with State page for more information.

Method Signature

Spacecraft.ContactTimes(

GroundStation contactGroundStation)

Arguments

contactGroundStation
Description:	GroundStation to use in contact calculation.

Return Value

Type:

string

Returns the acquisition of signal time (AOS), loss of signal time (LOS), and duration of the argument's contact with the Spacecraft.

The FF_Preferences.IntervalEventReportingBehavior property controls whether the start and end of propagation are reported as events. By default, if contact starts before the beginning of the propagation span, FreeFlyer will label the start of the propagation as the start of contact. If contact extends past the end of the propagation span, FreeFlyer labels the end of propagation as the end of contact.

Syntax

myString1 = mySpacecraft1.ContactTimes(myGroundStation1);