Platform alignment using a strapdown stellar sensor

Details Platform alignment using a strapdown stellar sensor Platform alignment using a strapdown stellar sensor

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aiaaj..13..659n&link_type=abstract

AIAA Journal, vol. 13, May 1975, p. 659-664.

Computer Science

Performance

Aerospace Vehicles, Gimbals, Misalignment, Stabilized Platforms, Star Trackers, Strapdown Inertial Guidance, Algorithms, Calibrating, Feasibility Analysis, Instrument Errors, Kalman Filters, Reference Stars, Space Navigation

Scientific paper

This paper examines the use of a body-mounted stellar-sighting device to align an aerospace vehicle's gimballed inertial measurement unit. The fundamental observability of not only platform misalignments but also time-invariant sensor-mounting errors is demonstrated. The performance of an inflight estimation algorithm is shown to be a function of several environmental and navigation hardware parameters as well as the characteristics of the sighting device itself. Parametric case studies are presented for a sample system.

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