title: Comparison of model predictions with LDEF satellite radiation measurements.
abstract: Some early results are summarized from a program under way to utilize LDEF satellite data for evaluating and improving current models of the space radiation environment in low Earth orbit. Reported here are predictions and comparisons with some of the LDEF dose and induced radioactivity data, which are used to check the accuracy of current models describing the magnitude and directionality of the trapped proton environment. Preliminary findings are that the environment models underestimate both dose and activation from trapped protons by a factor of about two, and the observed anisotropy is higher than predicted.
authors.affiliation: Science Applications International Corporation, Prospect, TN, USA.
authors.forename: T W
authors.initials: TW
authors.lastname: Armstrong
authors.forename: B L
authors.initials: BL
authors.lastname: Colborn
authors.forename: B A
authors.initials: BA
authors.lastname: Harmon
authors.forename: T A
authors.initials: TA
authors.lastname: Parnell
authors.forename: J W
authors.initials: JW
authors.lastname: Watts
authors.forename: E V
authors.initials: EV
authors.lastname: Benton
mesh_terms: D003359:Cosmic Radiation; D005544:Forecasting; D008962:Models, Theoretical; D011522:Protons; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation*; D011835:Radiation Protection / Q000295:instrumentation; D011874:Radiometry; D019445:Solar Activity; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft; D013819:Thermoluminescent Dosimetry
chemical_list: D011522:Protons