Question

Pre-processing algorithms are also called as _________

(a) Coning algorithm

(b) Error control algorithm

(c) Differential algorithm

(d) Resolution algorithm

This question was addressed to me during an interview for a job.

The query is from Strap Down and Gimballed Inertial Navigation Systems in chapter Satellite Radio Navigation  & Inertial Navigation of Avionics

Answer 1

The correct option is (a) Coning algorithm

To elaborate: Pre-processing the gyro data at a higher rate than the quaternion iteration improves the approximation in the vector change in angle in order to follow the actual motion of the rotation axis closely. The pre-processing algorithm is also called as coning algorithms.