The "ORP" Routine for Evaluating Orbital Flux Integrations

Description

The Orbital Radiation Package (ORP) is a FORTRAN routine available on tape designed to calculate the average geomagnetically trapped radiation accumulated by an earth-orbiting vehicle. ORP requires an input tape containing the B- and L-coordinates and time at each point along the trajectory to be evaluated. Codes for the calculation of the orbit and the B- and L-values of trajectory points can be supplied by NSSDC. ORP uses a block data interpolation technique compatible with the new electron models but incompatible with AE-1, AE-2, and AE-3. Proton model blockdata deck compatible with ORP, as well as the AE-4 and AE-5 decks for solar maximum or solar minimum, are available. When executed on an IBM 360 computer, ORP requires a region of 160k bytes of core. ORP can produce any of the following optional outputs -- the flux encountered at each point in the orbit, the flux encountered in each of 45 L-bands, the integrated energy spectrum, the flux accumulated in each of 8 intensity ranges, a peak flux per orbit table, and tables of energy spectra for standard circular orbits either as listing of on tape.