Optimal Reentry Time Estimation of an Upper Stage from Geostationary Transfer Orbit

摘要

The response surface method with genetic algorithm provides optimal estimates of initial eccentricity and ballistic coefficient for high-eccentricity orbit during the end of life of the cryogenic stage of the Indian geosynchronous launch vehicle, which assists in estimating accurate reentry times from different epochs. In this regard, this method is found to be better than the least-squares method. The study shows the tumbling of the rocket body during the last day in orbit.