Development of a Magnetically-Suspended Mirror Scanning Mechanism for an Interferometric

The Advanced Earth Observation Satellite (ADEOS) will be launched in early 1995. It carries an Interferometric Monitor for Greenhouse gasses (IMG). The IMG program has been implemented under the contract for " An assessment of the environment (A study of the global monitoring)" of the Ministry of International Trade and Industry since 1989. IMG is intended for the global observation of CO2, CH4 , N2O and other greenhouse effect gasses. It is a fourier transform infrared spectrophotometer (FTIR) , and requires a scanning mirror and the mirror scanning mechanism for fourier transform. In the IMG system, the mirror scanning mechanism is a key part. Accordingly, the authors manufactured the Magnetically-Suspended Mirror Scanning Mechanism (MAMS) for IMG. This paper presents the MAMS structure and the results obtained from its functional tests.