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Дата изменения: Tue Feb 15 16:50:44 2000
Дата индексирования: Mon Oct 1 22:03:14 2012
Кодировка:

Поисковые слова: reflection nebula
INFRARED FOURIER-SPECTROMETER SICH-F
INFRARED FOURIER-SPECTROMETER SICH-F


Measurement principle

Infrared Fourier-transform spectrometer SICH-F is intended for spectral distribution power measuring of atmospheric and ionospheric emissions in range of 2 - 9 mkm and it's height distribution. Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation.


Experiment configuration and heritage

Spectrometer consists of the photodetector block and the block of signal processing and control.

Photodetector block is set onto external surface of station. Optical axis direction 1 is set at angle of 18° to satellite velocity vector and it is located in plane «velocity vector - Nadir».

- Optical axis scanning 1 - +5 –30 deg

- Optical axis direction 2 - Zenith +-50 deg

- There haven't to be satellite device details into space angle +20 deg

Diagnostic information and attach data will transfer by state telemetric channels.

Four digital channels:

1. Detector temperature.

2. Engine temperature.

3. Absolute black body temperature.

4. Beamsplitter temperature.

Three analog channels:

1. Reper mark frequency.

2. Black body current.

3. Signal roughly.

Digital 5 channels:

1. Calibration 1.

2. Calibration 2.

3. Calibration 3.

4. Calibration 4.


Main characteristic of the SICH-F instrument

Sight field: 0.5 degree

Space resolution: 5 km (vertically)

Spectral resolution 2 cm

Time resolution 1 - 4 s