Use STK's
Analysis Workbench to compute the elevation angles by creating vectors from the satellite to each ground station. You can then show the elevation angles of each vector as output, all in the same report.
The steps below walk you through how to do this. Start with a basic scenario that has the following objects: Facility1 with Transmitter1, Satellite1 with Receiver1 and Transmitter2, and Facility2 with Receiver2. Also, create a chain object with the chain's assigned objects in the following order: Transmitter1, Receiver1, Transmitter2, Receiver2.
1. Go to the Analysis tab, select Analysis Workbench, and select the Vector Geometry tab.
2. Select Satellite1 and click the "Create new Vector" icon.
3. Set the following parameters to create a vector from Facility1 to Satellite1:
Type: Displacement
Name: Fac1_to_Sat
Origin Point: Facility1/Transmitter1 Center
Destination Point: Satellite1/Receiver1 Center
When finished, click OK.
4. Next, click the "Create new Angle" icon.
5. Set the following parameters to calculate the elevation angle:
Type: To Plane
Name: Elev_Fac1_to_Sat
Reference Vector: Satellite1 Fac1_to_Sat
Reference Plane: Satellite1/Receiver1 Body.XY
When finished, click OK.
6. Click "Create new Vector" icon.
7. Set the following parameters to create a vector from Satellite1 to Facility2:
Type: Displacement
Name: Sat_to_Fac2
Origin Point: Satellite1/Transmitter2 Center
Destination Point: Facility2/Receiver2 Center
When finished, click OK.
8. Click "Create new Angle" icon.
9. Set the following parameters to calculate the elevation angle:
Type: To Plane
Name: Elev_Sat_to_Fac2
Reference Vector: Satellite1 Sat_to_Fac2
Reference Plane: Satellite1/Transmitter2 Body.XY
Signed: Enabled
Toward plane normal: Negative
When finished, click OK.
10. From the Analysis tab, select the Report & Graph Manager.
11. Click the "Create new report style" icon on the right and click Satellite1 on the left.
12. In the Report Style dialog box, expand Angles, expand Elev_Fac1_to_Sat, and add Time and Angle to the Report Contents using the blue transfer arrow. Keep the dialog box open.
13. In the Angles data provider, expand Elev_Sat_to_Fac2 and add Angle to the Report Contents using the blue transfer arrow. Keep the dialog box open.
14. You can then change the names of each Report Contents item by clicking it, clicking the Options button, and then editing the Title. The attached example uses the following names for the angles: Elevation Angle for Facility1, Elevation Angle for Facility2.
15. Click OK to apply these selections and close the dialog box.
16. Before you generate the report, you want to limit the times to be the Chain Access Intervals. On the left, select the Use Advanced Times radio button and click Set Times. The Advanced Time Properties dialog box appears. Remove all times in the table and click Import. The Select Time Intervals dialog box appears. Choose the chain on the left and CompleteChainAccessIntervals on the right. Click OK to apply the changes and close the Select Time Intervals dialog box. Click OK again to close the Advanced Time Properties dialog box.
17. Click the Generate... button for the report you just created. If you used the example names for the angles, you should have the Time in column 1, Elevation Angle for Facility1 in column 2, and Elevation Angle for Facility2 in column 3.
You can apply this method for other data providers, not just elevation angles. You can repeat the steps to add more facilities. See the attached scenario and report for an example of the results.
