Determination of misalignment between two inertial systems is problem dealing with random variables; initial misalignment angles are random variables, as are inertial instrument inaccuracies; if figure of quality is to be assigned to indicated misalignment, statistical techniques must be used; optimum linear filter developed by R.E. Kalman is applied; given linear expressions for propagation of misalignment angles and for measurement process, technique produces maximum-likelihood, real-time estimate of desired quantities; use of indicated downward velocities and inclusion of vertical maneuver during estimation process are investigated to improve accuracy of level misalignment estimates. (11918)
Kalman filter in transfer alignment of inertial guidance systems
J Spacecraft Rockets
Journal of Spacecraft and Rockets ; 5 , n 10
1968
6 pages
Article (Journal)
English
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