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An international project on remote sounding of the Earth in ultraviolet, visible, infrared and microwave diapasons of the spectrum aboard the special module `PRIRODA' of the MIR orbital station will be carried out during 1994 - 1996. An important part of scientific program will be determination of spatial distribution of ozone, natural minor gas constituents, anthropogenic pollution in the atmosphere and the improvement of methods and technical means for meteorological sounding of the Earth. The Multichannel Infrared Spectroradiometer (MIRS), which is an integral part of the PRIRODA complex and the main pat of the sounding system ISTOK-1 will measure the thermal emission and absorption spectra of the atmosphere in the region of 4 - 16 micrometers . The spectroradiometer is a 64-channel instrument for limb and nadir atmospheric sounding, that is based on the line arrays of infrared detectors. The noise equivalent power of the MIRS-ISTOK-1 experimental model is about 10-5 W/cm2(DOT)srmicrometers while the observation time per one spectrum is about 1 sec and the spectral resolution is of 0.15 - 0.3 micrometers . The accuracy of absorption measuring (by viewing the Sun) is of 0.1 percent. Various geometries of observation may be used owing to mounting of the instrument upon a two-axle oriented platform. The optical design of MIRS, its potential spectroscopic ability and the concrete realization of the instrument for the PRIRODA project are described.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
