Technical data acquisition equipment for GOSAT

We have been developing the Technical Data Acquisition Equipment (TEDA) for the Greenhouse gases Observing Satellite (GOSAT). The GOSAT satellite will be launched in 2008 into a sun-synchronous sub-recurrent orbit with 666km altitude and 98deg inclination. The nominal mission duration is 5years. The TEDA is a comprehensive orbital radiation environment monitoring system designed to provide measurements of the energy spectra of energetic electrons, protons, and heavy ions of masses ranging those of from helium to iron. The TEDA includes five newly developed sensors that are more compact and lightweight than conventional sensors. The obtained data are expected to contribute to science and technological development by increasing our understanding of the causes of radiation-induced spacecraft degradation and anomalies, updating the space radiation environment model, and so on.