Life Prediction Method Based on Deviation Analysis of Fuel Calculation at the End of Satellite Life

A satellite residual fuel estimation and correction method based on input parameter deviation analysis is proposed for solving the problem of large error in calculating residual fuel using PVT method, which affects satellite mission planning. Based on the derivation of the error propagation equation for residual fuel estimation and the comparison of the calculated deviations between the bookkeeping method and the PVT method, the error sources and input deviations of the PVT method for calculating residual fuel are analyzed to achieve satellite residual fuel correction. Under the premise of only considering residual fuel, the on orbit fuel consumption demand of GEO (geostationary orbit) satellites is analyzed to predict the remaining life of the satellite. The practical engineering application shows that this method can correct the calculation deviation when there is a large deviation in the satellite residual fuel calculation, and provide effective reference and technical support for satellite mission planning.