MULTI-RATE NUMERICAL INTEGRATION OF SATELLITE ORBITS FOR INCREASED COMPUTATIONAL EFFICIENCY

摘要

A multi-rate numerical integration method is applied which allows the direct effect of particular force model components on a satellite's orbital state to be estimated separately from the effects of the remaining forces on the satellite. The method allows the quickly changing features of a particular force model component to be sampled without the cost of frequent evaluations of the entire force model. The extra equations which this method generates are coupled with the standard equations so that the indirect effects of the force model component are not lost. This approach is tested on a LAGEOS II orbit using solar radiation pressure which has quickly changing penumbral effects. [References: 12]