The start and stop times specified in the list are the time intervals during which the sensor or satellite can access a particular object.
|Use Access Times
Uses the access times between the satellite or sensor and the selected target as the scheduled times.
When using target access times, the following methodology will be used to resolve target pointing at times when the sensor could point towards more than one target. The sensor will point to the target that is visible at the current time and has the earliest access start time of all targets visible at the current time. The sensor will not switch targets until the end of the access interval for the current target selection.
||You can modify the scheduled times by disabling Use Access Times.
To add a scheduled time:
- Click Add to add Start and Stop times for a display period.
- Double-click the Start value and enter the desired start time.
- Double-click the Stop value and enter the desired end time.
To load an interval (.int) file:
- Click Load to open the file browser window.
- Browse to the desired interval file and click Open.
To import STK Analysis Workbench Time Tool interval component data:
- Click Import to open the Select Time Intervals window.
- Select or create a time interval component and click OK.
To change a scheduled time:
- Select the display interval line that you want to change.
- Double-click the value that you want to change and enter the desired date and time.
To remove a scheduled time:
- Select the display interval line that you want to delete.
- Click Remove.
To remove all scheduled times, click Remove All.
||Use the Deconflict options to resolve interval overlaps.
- Automatic. STK automatically modifies all time intervals during which an overlap occurs so that the intervals are further segmented to avoid overlap.
Intervals are ordered by increasing start time.
Adjacent intervals where the first interval end time is within the second interval timeframe, the midpoint of the overlap is determined and set as the end time of the first interval and the start time of the second interval.
Adjacent intervals where the first interval completely contains the second interval has the first interval split into two new intervals that correspond with the time frames of the original interval that occured before and after the second interval; the second interval is retained in its entirety.
Adjacent intervals that do not overlap remain unchanged.
Visual example of interval changes
- Manual. When an overlap occurs in the Scheduled Times list, an Acknowledge window appears when you click OK or Apply to alert you to the fact that the overlap exists. You can set the Deconflict field to Automatic so that the overlap is fixed, change the time intervals by modifying the appropriate entries in the list box, or ignore the message and continue. If you ignore the message, the satellite or sensor points at the first target until the target is no longer in sight.
- None. No changes are made to time interval overlaps.
Once you have disabled the Use Access Times option and have made any edits in the Scheduled Times table, further use of Use Access Times is precluded for targets that are already assigned or for any new ones you may add. To restore that option, move all assigned targets to the available targets list and click OK or Apply. Then move them back to the Assigned Targets list.