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The star signal power does not depend on _____________(a) Spectral irradiance of stellar light(b) Spectral response of the light detector(c) Brightness of the star(d) Size of the starThe question was asked in an online interview.My doubt is from Stellar Sensor Design topic in chapter Celestial Navigation, Doppler and Altimeter Radars of Avionics

Answer»

Right answer is (d) SIZE of the star

The explanation is: Star SIGNAL power is the EFFECTIVE area of the telescope TIMES the irradiance of the star. It depends on the spectral irradiance of the STELLAR light, the spectral response of the light detector, and the brightness of the star.



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