Accession Number : AD0783027
Title : Integration Modifications to Accommodate Solar Radiation Discontinuities.
Descriptive Note : Technical rept.,
Corporate Author : NAVAL WEAPONS LAB DAHLGREN VA
Personal Author(s) : Beuglass,Larry K.
Report Date : JUN 1974
Pagination or Media Count : 22
Abstract : Discontinuities which appear in problems involving numerical integration may require special attention if a multistep algorithm is used. The report describes the changes which were made to the ASTRO computer program in order to accommodate the discontinuities in the solar radiation pressure affecting a satellite as it enters and leaves the Earth's shadow. Of particular interest is the improvement in the accuracy of an ephemeris by a factor of 40 at negligible cost in terms of additional computer time. (Author)
Descriptors : *Solar radiation, *Radiation pressure, Ephemerides, Curve fitting, Graphics, Computer programming, Numerical integration
Subject Categories : Spacecraft Trajectories and Reentry
Distribution Statement : APPROVED FOR PUBLIC RELEASE