Comments (8)
I am doing a HUGE rewrite in SatelliteToolbox.jl.
Exciting
My open-source output suffered quite a bit in the past year. For good reasons (I became a father in January) and for bad reasons (two job changes in 2020).
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Hi @helgee
For good reasons (I became a father in January)
First of all, congratulations!!
Let me know if you need/want input. I am getting back in the game...
Yes, probably I need! Now that I have more experience on how Julia works, I am trying to:
- Stabilize the API related with the orbit representations (keplerian elements and state vectors).
- Finish the IAU-2006 theory by adding the Equinox-based approach.
- Stabilize the propagators API.
- Implement a high precision numerical propagator.
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I took another look at this and I think I have a fairly simple solution to generalize the ground_station_visible
function. Unless my vector math is off, which is very well could be, I think its just necessary to rotate the radar site vector by the pointing angle (as measured from zenith). I did a 2D example as Pluto notebook here, and it should generalize easily to 3D I think. But I don't know how this would work within the other visibility functions.
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Hi @mihalybaci,
Sorry for the delay. I am doing a HUGE rewrite in SatelliteToolbox.jl. This is a very old project (dating back to 2013) and I understand now much better the Julia language. Hence, some terrible choices I made back then are giving me headaches :D
As soon as I clean everything, I will take a look in this feature, I promise!
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No worries! That will give me time to actually confirm that it works. And if this feature is too niche then don't worry about adding it. I dont know if anyone but me will need it
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No, it is no niche! It is a very useful one!
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Out of curiosity, what algorithms are out there for high precision propagation?
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AFAIK there is some algorithms written in MATLAB but without testing or any public verification. Basically, we need to compute the acceleration at each pointing using all the information we can get (high order Earth gravity computation, gravity from other celestial body, relativistic terms, etc.) and then use a very precise differential equation solver.
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Related Issues (20)
- Remove unused variables
- Increase precision in ref. system conversions
- Why the track is not drifting? HOT 7
- Reference to geodesic coordinate frames HOT 2
- Wrong docstring for rv_to_mean_elements_j2osc HOT 1
- High precision orbit propagator HOT 3
- Automatically download TLE HOT 3
- Quick fix to rv_to_kepler HOT 7
- Docstring update for getters functions HOT 2
- Precompilation error when SatelliteToolbox and get_iers_eop are used as dependencies HOT 2
- IERS data service down HOT 7
- Daily Ap index using get_Ap() and get_space_indices()
- Allow the propagators to initialize the structure in place HOT 1
- 2023 Space Index File not available HOT 2
- Compatibility of transformations code with Automatic Differentiation tools (Zygote) HOT 2
- Discrepancies between J2 Propagator and STK J2Perturbations HOT 20
- sgp4 propagator accuracy HOT 5
- ITRF to TEME transformation HOT 4
- Can't find ground_station_accesses in v0.10.0 HOT 10
- init_orbit_propagator method definition warning HOT 2
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