Accurate sun sensor: satellite ELEKTRO

 

Precision Solar Sensor (SDS) is designed to determine the angle between the optical sighting axis of the sensor and the direction towards the center of the Sun and is used as a sensitive element in systems orientation and stabilization of space platforms.

 

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Accurate sun sensor: satellite ELEKTROAccurate sun sensor: satellite ELEKTRO
Optical circuit of a precision sensor Sun. Above is a rough channel, below accurate.Solar sensor design. 1 – input slits of the coarse channel, 2 – receivers of the coarse channel, 3 – lens of the fine channel, 4 – receiver of the fine channel.

Various modifications of the precision solar sensor TDS were installed on the rocket astrophysical observatories K-2 K-4 and ROS-5, and were also included in the solar stabilization system of the space astrophysical observatory ORION-2. In November 1994, the TDS precision solar sensor was launched into orbit and successfully operated as part of the service equipment of the geostationary meteorological satellite ELECTRO (VNIIEM).

Accurate sun sensor: satellite ELEKTROAccurate sun sensor: satellite ELEKTRO
Accurate Sun Sensor (TSS), its electronics unit and test panel.Geostationary weather satellite ELECTRO

 

Main characteristics of TDS:

Field of view of the coarse channel±30 degrees 
Precise channel field of view±34 arcmin 
Angular threshold sensitivity of the rough channel30 arcsec 
– Angular threshold sensitivity of the precise channel3 arcsec 
Power consumption6 W
Weight of optoelectronic head1.5 kg
  electronic unit6 kg

 

Accurate sun sensor: satellite ELEKTROAccurate sun sensor: satellite ELEKTRO
TDS-90. Static characteristic of the precision channel along axis 1TDS-90. Outline of the tracking system (zeroing process), graphs for both channels are displayed. The work was carried out at a dynamic stand in Garni in the natural Sun mode.

 

 

 

Last Updated on 2025.01.10