GGM | DGM-1s | DIR-R4 | TIM-R4 | Eigen-6C3 | DIR-R5 | TIM-R5 | Eigen-6C4 | SPW-R4 |
Name in ICGEM | DGM-1S | GO_CONS_GCF_2_DIR_R4 | GO_CONS_GCF_2_ TIM_R4 | EIGEN-6C3stat | GO_CONS_GCF_2_ DIR_R5 | GO_CONS_GCF_2_ TIM_R5 | EIGEN-6C4 | GO_CONS_GCF_2_ SPW_R4 |
Maximum d/o | 250 | 260 | 250 | 1949 | 300 | 280 | 2190 | 280 |
Semi-major axis a [m] | 6,378,136.60 | 6,378,136.46 | 6,378,136.30 | 6,378,136.46 | 6,378,136.46 | 6,378,136.46 | 6,378,136.46 | 6,378,136.30 |
GOCE data | 14 months | ~28 months | ~26.5 months | ~36 months | ~42 months | ~42 months | ~42 months | ~33 months |
GRACE data | 7 years | ~7 years | - | 9 years | 10 years | - | 9 years | - |
LAGEOS-1/2 SLR data | - | ~25 years | - | 25 years | 25 years | - | 25 years | - |
Terrestrial data | - | - | - | DTU12 GGM + EGM2008 | - | - | DTU12 GGM + EGM2008 | - |
Kaula’s regularization d/o | 179 onward | 200 onward | 180 onward | - | 180 onward | 200 onward | - | - |
Time of releasing | 2013 | Mar. 2013 | Mar. 2013 | 2014 | Jul. 2014 | Jul. 2014 | 2014 | 2014 |
Reference | [12] | [31] | [4] | [10] | [31] | [32] | [11] | [33] |