Doppler data analyses

[SamFayolle]

MODELS

(*) = also requires some additional file reading capability, see next section)

• Antenna positioning

  • switch between antennas when necessarty (*)
  • estimate position of the antenna (check and verify existing code)

• Panelled SRP: fit certain scaling parameters as a way to correct the model

  • one single scaling factor (applied to the whole model)
  • two factors (one in the direction of the Sun, the other one in the perpendicular direction)

• Masses and manoeuvres

  • read from PDF files (*) and model as impulsive Delta-Vs (for the latter)

• Light-time

  check Moyer (2000) and make list of missing steps in Tudat
  add missing steps

• create LT example where each LT contribution is added step-by-step, possibly with some benchmarking (wrt e.g. Godot (?) )

• Time bias for ramped Doppler observables

• Earth's rotation

  • check difference between Tudat's IERS 2010 and ITRF93
  • how to use PDS .eop files as correction to latest SPICE kernel (*)

• Ocean loading models

• Check parameters in other software and make list of potential parameters to add in Tudat

FILE READING CAPABILITIES

• antenna switch file reader
• load mass and manoeuvres from PDS
• automatic loading of available orbit, clock, and orientation files from PDS
• microwave radiometer data file from PDS
• .tnf file reader
• .atdf/tdf file reader
• .eop file reader

EXAMPLES

• Improve existing examples (incl. making them more versatile)

  • parsing more tracking arcs
  • improve readibility and visualisation

• Other examples:

  • MRO
  • Cassini
  • fit to SPICE for GRAIL to test dynamical model

REFACTORING & INTERFACES

• residuals currently stored in another ObservationCollection
• ObservationDependentVariables class
• add interface to create simulation settings from odf file