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The inertial LOS to any star is precisely given from _______

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The inertial LOS to any star is precisely given from _______

(a) Star tracker

(b) Star catalog

(c) Air data computer

(d) Celestial fix

The question was asked in an online interview.

My question comes from Stellar Inertial Navigation Theory topic in section Celestial Navigation, Doppler and Altimeter Radars of Avionics

1 Answer

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Correct choice is (b) Star catalog

To explain I would say: The application of Kalman filter begins with the precise mathematical definition of the star observation. The inertial line of sight to any given star is precisely known from the star catalog.

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