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Table 2
Configurations for POD and gravity field recovery in LUGREAS.
| Models | Types | Details |
|---|---|---|
| Dynamic model | A priori gravity field | SGM100g (Matsumoto et al. 2010) |
| N-body perturbation | Sun and eight planets from JPL DE421 (Williams et al. 2008) | |
| Lunar solid tidal perturbation | k2 = 0.0240 (Love Numbers from Matsumoto et al. 2010) | |
| Perturbations | Moon J2 indirect perturbation | |
| from Earth-Moon oblateness | Earth J2 perturbation | |
| Relativity perturbation | Schwarzschild (Sun only) | |
| Solar radiation | Fixed ratio of area to mass | |
| Correction model | Relativistic acceleration correction | Moyer (2005) |
| Earth tropospheric correction | Hopfield model (Hopfield 1963) + CfA2.2 mapping function (Davis et al. 1985) | |
| TDB-TT translation model | Moyer (1981) | |
| Tracking station correction | Earth solid tide, ocean tide, and polar tide correction | |
| Others | Earth rotation model | IAU 2006 precession-nutation Seidelmann et al. (2007); Polar motion parameters from IERS C04 |
| Lunar rotation model | JPL DE421 (Williams et al. 2008) | |
| Data and weighting | Two-way Doppler with fixed weight | |
| Ephemeris | JPL DE421 (Williams et al. 2008) | |
| Solution parameters | Arc parameters | Initial orbit values; empirical accelerations; S-band bias |
| Global parameters | Spherical harmonics up to degree and order of 100; k2 |
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