AccessConfig
Adjust the performance of access computations
Syntax
AccessConfig <ApplicationPath> {AccessConfigOption}
Description
The AccessConfig Connect command enables you to adjust and improve the performance of access computations.
Valid values for {AccessConfigOption} can be:
| {AccessConfigOption} | Description |
|---|---|
| UseLightTimeDelay {On | Off} | Turn on or off the use of light time delay in access computations. |
| TimeConvergence <Value> | Set the time tolerance used by the access algorithms for determining the start and stop time of access intervals. The event detection routine declares that an event is found when either the value of the access constraint converges to the desired value to within eight digits or the time interval in which the event lies is within the time tolerance. <Value> is a real number in seconds (1.0e-9 <= t <= 1.0). |
| MaxSamplingStepSize <Value> | Set the maximum step allowed between constraints samples. <Value> is a real number in seconds (1.0e-5 <= t <= 315576000.0). |
| MinSamplingStepSize <Value> | Set the minimum step allowed between constraints samples. <Value> is a real number in seconds (1.0e-5 <= t <= 315576000.0). |
| LightTimeDelayConvergence <Value> | Set the time tolerance used by the access algorithms for computing the light time delay between objects, when STK considers light time delay effects. The light time delay occurs whenever a correction to the previous estimate is within the time tolerance. <Value> is a real number in seconds (1.0e-9 <= t <= 0.1). |
| AberrationType {None | Annual | Total} | Set the model of aberration for STK to use in access computations. None indicates that aberration is ignored; Annual indicates that only annual aberration is accounted for; Total indicates that the full aberration correction is to be applied. |
| AbsValueConvergence <Value> | Set the criterion used for convergence for values near 0. <Value> must be between 1e-30 and 1e30. |
| RelValueConvergence <Value> | An event is considered detected when a constraint value's relative difference compared to the previous sample is within this tolerance. <Value> must be between 0.0 and 1.0. |
| PreferredTimeSense {Transmit | Receive} | Set the preferred directionality for access computations in situations where no directionality is specified. For example, it affects Access, Chains, and DeckAccess but not Coverage. When SnPreferredTimeSense is set to No Preference (see below), this setting affects nontargeted Sensors and targeted Sensors with Track Mode set to Transpond. For more information on Track Mode, go to STK Help > Using STK > Technical Notes and click the Targeted link in the Sensor Pointing list. You can expand the Targeted section by clicking the Targeted heading and finding the Track Mode link in the step-by-step instructions. |
| SnPreferredTimeSense {Transmit | Receive | NoPreference} | Set the preferred directionality for Sensors in access computations. This does not apply to targeted Sensors with Track Mode set to Receive or Transmit because, in those cases, STK uses Track Mode as the preferred directionality in access computations. For more information on Track Mode, go to STK Help > Using STK > Technical Notes and click the Targeted link in the Sensor Pointing list. You can expand the Targeted section by clicking the Targeted heading and find the Track Mode link in the step-by-step instructions. |
| AutoAddTimeline {On | Off} | Use this option to set the default value for automatically adding Access intervals to the Timeline View when STK computes Access. |
If UseLightTimeDelay is Off, then STK ignores Aberration.
STK always models Star objects with total (stellar) aberration, regardless of the AberrationType and UseLightTimeDelay settings.
Examples
AccessConfig / UseLightTimeDelay On
Return message
Group membership
This command belongs to the following group(s):
Version
11.1