Gravity field model adjustment from ERS-1 and TOPEX altimetry and SLR tracking using an analytical orbit perturbation theory

摘要: Abstract The JGM-2 gravity field model has been adjusted using 70 days of ERS-1 and 19 10-day repeat cycles TOPEX/Poseidon SLR single satellite altimeter crossover differences. In addition, dual differences between TOPEX for the selected 70-day period cycle 18 have used in adjustment. computation normal equations, use was made analytical Lagrange linear perturbation theory. difference rms brought down from 15.2 to 14.1 cm 10.6 10.5 TOPEX. reduced 17.7 16.9 cm. Furthermore, weighted fit measurements 16.0 14.4 ERS-1, 5.4 5.0 TOPEX/Poseidon.