Table 1 Accuracies in the determination of the gravity field by “classical” measurements (including the planned ESA-NASA NGGM/MAGIC mission [160])
From: Cold atoms in space: community workshop summary and proposed road-map
Measurement type | Monitoring gravity field time variations | Static gravity field | ||
|---|---|---|---|---|
CHAMP 2000–2010 | GRACE/GRACE-FO 2002—ongoing | NGGM Launch scheduled 2028 | GOCE 2009–2013 | |
EA accuracy | ∼10−10 m/s2 | ∼10−11 m/s2 | ∼10−11 m/s2 | ∼10−12 m/s2 |
Geoid undulations | ∼10 cm @350km | ∼10 cm @175km | ∼1 mm @ 500 km every 3 days ∼1 mm @ 150 km every 10 days | ∼1 cm @100km |
Gravity anomalies | ∼0.02 mGal @1000km | ∼1 mGal @175km | ∼1 mGal @100km | |