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What is it called when the position is determined by angles between a star and an accurate time reference?(a) Position fix(b) Celestial fix(c) Sun fix(d) Horizontal fixI have been asked this question in an interview for job.Question is taken from Stellar Inertial Navigation Theory in portion Celestial Navigation, Doppler and Altimeter Radars of Avionics

Answer»

The correct option is (b) Celestial FIX

Best explanation: Navigators on early TRANSOCEANIC flights used sextants to manually measure STAR angle with RESPECT to their local vertical. Using the line of sights form two or more stars, along with a star catalog and accurate time REFERENCE, the position in Earth latitude and longitude can be deduced. This was known as celestial fix.



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