In addition to the new features, this release of the Ansys Systems Tool Kit® (STK®) application also provides technical corrections from the last release. Click the capability in the table below to jump to the corresponding release notes section.
| Release Notes by Capability | ||
|---|---|---|
| Access | Analysis Workbench | Astrogator |
| CommRad | Coverage | RF Channel Modeler |
| STK general | ||
Access
The STK Access capability determines when one object can see another object, given any applied constraints. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| ANLY-1255 | Computational objects like Chains, Coverage, and CommSystem now update when they are in a computed state and dependent on an Access ObjectExclusionAngle constraint when the excluded object position is modified. Previously, those objects' computational results would have been stale and would have required manually clearing with subsequent computing to see the updated results, unless an existing Access had an ObjectExclusionAngle constraint involving the same excluded object. Access results, however, would have recomputed correctly. |
| ANLY-1257 | Computational objects like Chains, Coverage, and CommSystem now update when they are in a computed state and dependent on an Access Constraint involving an AWB component when the AWB component is modified. Previously, those objects' computational results would have been stale and would have required manually clearing with subsequent computing to see the updated results, unless an existing Access also depended on that AWB component. Access results, however, would have recomputed correctly. |
| ANLY-1259 | Access, and other computational entities like Chains, Coverage, and CommSystem, no longer recompute unnecessarily when a constraint's data has been updated. Previously, a second computation may have been triggered after the first, replicating the same results but taking time to do so. |
| ANLY-1263 | The AddNamedConstraint method of IAgAccessConstraintCollection now works in the same way for the ObjectExclusionAngle constraint as AddConstraint does. In particular, they return an interface (AgAccessCnstrObjExAngle) that you can use to add a constraint, once the excluded object is identified. They do not actually add a partially configured constraint into the list. |
| ANLY-1286 |
Computational objects like Chains, Coverage, and CommSystem now update properly when the following are true:
Previously, if you set the constraint using the SetConstraint Connect command, then the computational results for those objects would have been stale and would have required manual clearing with subsequent recomputing to see the updated results. |
Analysis Workbench
The STK Analysis Workbench capability (AWB) comprises four application-wide tools that you can use to create custom components for your scenarios. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| ANLY-1248 | When you edit a ScheduledAxes component in AWB, it will now continue to work as expected. |
| ANLY-1262 | Disabled AWB constraints now load properly. Previously, they may not have loaded correctly if the AWB component being used was owned by the same object as the owner of the constraint. |
| ANLY-1269 | The STK software no longer freezes or crashes when computing coverage when a ScheduledAxes component in AWB is used as part of the computation, such as when setting the attitude of an object. |
| ANLY-1270 | Exporting the attitude, using native times, for a vehicle with attitude dependency on a Scheduled Axes component from AWB now works correctly. Previously, the export request would cause an error, preventing the creation of the file. |
| ANLY-1271 | The Merged TimeArray component in AWB has been corrected to merge time where the input time arrays are defined over more than one interval. Previously, only the first interval of times was merged for all input time arrays other than the first input time array. |
Astrogator
The STK/Astrogator® capability contains specialized analysis computations for interactive orbit maneuvering and spacecraft trajectory design. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| GATOR-3682 | The functionality of UserDefinedEpoch constraints on Propagate segments of Astrogator satellites has been restored. |
Communications & Radar
The STK Communications & Radar capability simulates the performance of communications systems in the context of a mission. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| COMMRAD-4023 | The Comm System Info data providers no longer report blank names for the transmitter (report element "Xmtr Name") and Receiver (report element "Rcvr Name"). |
Coverage
The STK Coverage capability takes coverage analysis capabilities to the next level by extending visibility analysis to discretized distributed areas, as seen from a collection of assets. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| ANLY-1294 | The Navigation Accuracy Figure of Merit (FOM) is now more reliable in computing its value when the range and/or receiver uncertainty input settings values are not small (i.e., about 25 m or more). For these moderate or large input values, the previous algorithm may have failed when attempting to invert a matrix, producing an invalid FOM value. The new algorithm better scales the problem, producing more valid values. |
RF Channel Modeler
The Ansys RF Channel Modeler™ capability enables you to analyze network interactions for RF communications and radar within an STK scenario. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| COMMRAD-4022 | The STK application now handles the situation when you make changes to the RF Channel Modeler in the GUI and do not apply the changes while at the same time modifying a Communications or Radar object (Transmitter, Receiver, Antenna, or Radar) and applying those changes. |
STK general
The STK general list contains corrected issues that affect the STK application as a whole. In the STK v13.0.1 release, you can find the following improvements:
| Issue ID | Release Note |
|---|---|
| GFX-7792 | The utility that converts terrain data to 3D tilesets, AgTerrain2Tiles, now correctly generates polar-based geometry on globes defined by an oblate spheroid. |
| PLAT-41098 | The STK X Application interface now has new properties to support Connect command authentication properties. |
| PLAT-41092 | ConnectExample, a Perl module included in code samples for connecting to the STK application through a socket, has been updated to default to the UDS socket for Linux. |