Abstract:In this paper, we analyze the effects on the gravity model from inter-satellite ranging sensor, accelerometer and GNSS receiver errors. The results indicate that range-rate, non-gravity and position need to be surveyed with the accuracy 10-30 nm/s, (1-5)×10-11 m/s2 and 2-3 cm respectively. The accuracy of the gravity model recovered will be 1-2 mGal with 100 km space resolution. The conclusions are useful for developing the next-generation satellite gravimetry mission.