Radiation Measurements in Low-Earth Orbit 2002-01-2463

The advent of the Space Shuttle program has made possible space radiation environment measurements covering a wide range of altitudes and orbital inclinations over multiple solar cycles. These measurements include routine integral absorbed dose measurements with thermoluminescent dosimeters (TLDs) and absorbed dose, dose equivalent LET spectra measurements with tissue equivalent proportional counters (TEPCs). The construction of the International Space Station (ISS) is currently underway and similar measurements have been made since May 1999. This paper will review the operational radiation protection measurement data that has been gathered during this initial construction period.