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13 September 1994 Modular Optoelectronic Scanner (MOS): an imaging spectrometer for remote sensing of the environment
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The imaging pushbroom scanner MOS measures the spectral radiance of the backscattered radiation of the earth surface in the VIS/NIR spectral region from orbit altitudes. The two main problems, the investigation of ocean/land and atmospheric properties, require a modular optomechanical and -electronical spectrometric device: MOS-A especially for data acquisition in the absorption band of the atmospheric oxygen in 4 spectral channels with 1,4 nm bandwidth and MOS-B with 13 channels of 10 nm bandwidth between 0,4 micrometers and 1,0 micrometers . The spectral and radiometric properties of MOS are chosen with respect to the spectral characteristic of the upwelling radiation, which is influenced by the object spectral reflection function. They are a compromise between the dominant measuring quantities like radiometric, geometric and time resolution requirements. These problems in connection with the design and calibration concepts will be discussed.
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Horst H. Schwarzer and Karl-Heinz Suemnich "Modular Optoelectronic Scanner (MOS): an imaging spectrometer for remote sensing of the environment", Proc. SPIE 2209, Space Optics 1994: Earth Observation and Astronomy, (13 September 1994);

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