No abstract

No abstract

We describe a radiometer intended for use in the spectroradiometric complex for remote sensing of the Earth's atmosphere. The main feature of the radiometer is application of an electrically controlled modulator-calibrator allowing one to perform measurements and thermal calibration in a wide temperature range without using matched loads and means for their connection. The principle of operation and design of the modulator-calibrator are described and the characteristics of the radiometer and its separate units are presented.

The spectroradiometer facility for ground-based thermal sensing of the middle atmosphere is developed and manufactured. Observation of the atmospheric self-radiation in the range including two lines (27 − and 29 − ) of spin-rotational transitions of molecular oxygen is performed. The atmospheric-temperature profiles in the altitude interval 10-55 km are recovered from the observation data.

No abstract