Questions tagged [stk-agi]
STK is the Systems Tool Kit (former Satellite Tool Kit) software from Analytical Graphs Inc. (AGI). Questions about STK usage, functionality, applications and features should have this tag.
26 questions
-2 votes
1 answer
90 views
Research examples that can be conducted using STK or GMAT [closed]
I am looking for some inspiration. I have STK and GMAT. Recently certified in STK. I want to dig deep and show some expertise. Can someone give some good research topics I should explore? Maybe some ...
1 vote
0 answers
134 views
Earth-Moon Rotating Frame in STK
I'm trying to create a coordinate system in STK that is centered at the Earth-Moon barycenter. The x-axis should point at the Moon and the z-axis should be normal to the Earth-Moon plane. Is there a ...
- 11
1 vote
0 answers
81 views
Astrogator sequence scripting tool
TIA: In STK, I'm building an astrogator sequence for a finite burn with a string seeding in the main sequence. I've come across a problem that when operator inputs string and doesn't check timing, if ...
1 vote
0 answers
186 views
How to set a constant density model in STK'S Astrogator
I'm trying to verify a simplifying orbit maintenance strategy obtained from one of my numerical tools using Astrogator as a propagator. My tool uses a constant density value obtained by averaging the ...
- 367
4 votes
1 answer
509 views
Geo satellite - antenna gain contours to heat map in STK
I am using STK to show antenna gain contours on the ground from a transmitter on a sensor on a geo bird that is tracking a receiver on the ground. With good resolution I can create great images that ...
- 41
1 vote
1 answer
208 views
3 votes
0 answers
141 views
I am trying to create an inter-satellite network and run an inter-satellite routing protocols
I am trying to create a simulation of a network of cube sats connected to Earth station to provide me with internet. I want to run on these satellite a routing protocols can this be done using STK ...
- 31
3 votes
1 answer
918 views
Which method STK uses to compute Umbra or Penumbra time intervals?
someone knows in which way STK computes the eclipse times for a satellite? I use a Matlab code taken from D.Vallado's library (ALGORITHM 34) but even if I use a PVT provided by STK (1 sec time step) ...
- 367
4 votes
1 answer
286 views
How can I extend EOP data beyond the last prediction epoch?
I have an EARTH ORIENTATION PARAMETERS (EOP) DATA file taken from CelesTrak to convert data from ECI to ECEF. The same file used by STK for the Scenario to be clear. However its predictions stop at ...
- 367
0 votes
0 answers
390 views
Orbital Angular Momentum on STK
I want to allign my satellite with the orbital angular momentum vector. Thus, I've computed this vector in a Fixed Coordinate System using the cross product (r x v) between position vector and ...
- 367
3 votes
0 answers
465 views
Running STK scenario with Python integration
I have created a scenario in STK 12.4 with a couple of satellites that will pass over a target location. I want to have a function that is called while the scenario is running. Does the Python API ...
- 131
5 votes
1 answer
3k views
How can I get longitude of ascending node from satellite TLEs with Right Ascension of Ascending Node (RAAN)?
As the title says, the TLEs contains RAAN, from which I want to get the longitude of ascending node, as defined in the STK help file as shown in the figure. Is there an open source tool for python to ...
- 51
4 votes
0 answers
300 views
I'm trying to create a trajectory to Mars for a low thrust ion thruster engine using astrogator
I'm trying to create an optimize a trajectory to Mars for a number of low thrust high specific impulse engines. I am having trouble with the initial set up. I created a LEO exit spiral using a ...
- 113
2 votes
1 answer
820 views
Using astrogator in STK to separate 2 satellites using atmospheric drag
So I can do an initial separation using Astrogator by using different areas. What I need to do now is to define a distance and at that distance the area that the satellites are propagating changes. ...
- 23
1 vote
1 answer
1k views
How can I edit the STK report output?
I have been dealing for a while on a report which is generated by STK. It contains basically time, azimuth, elevation and range data. Besides those data I need to also generate the theta and phi ...
- 356