2. Solar collectors

Of all optical sensors, solar collectors are the most widely used. This is mainly due to the intrinsic characteristics of the Sun, namely :

its energetic radiation, equivalent to a luminance of 2 · 10 ⁷ W · m ^–2 · sr ^–1 or an average illuminance outside the atmosphere of 1,350 W · m ^–2 , which makes it possible to use simple, reliable equipment without detection problems due to an excessively low signal-to-noise ratio;
its inertial galactic position and apparent angular diameter ("32' as seen from Earth), which greatly simplify attitude determination algorithms;
its spectral emission, which is...

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Solar collectors

Bibliography

(1) - CNES - Techniques et technologies des véhicules spatiaux (cours de technologie spatiale) - . 2 tomes, 1 864 pages, Édit. CEPADUES (1994).
(2) - - Members of the Technical Staff Attitude Systems Operation, Computer Sciences Corporation :...