Rapid star-pattern identification

Brendan Quine; Hugh F. Durrant-Whyte

doi:10.1117/12.241931

7 June 1996 Rapid star-pattern identification

Brendan Quine, Hugh F. Durrant-Whyte

Proceedings Volume 2739, Acquisition, Tracking, and Pointing X; (1996) https://doi.org/10.1117/12.241931
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

An algorithm for the rapid identification of star patterns is presented. The paradigm utilizes a novel star selection technique and a new binary tree- search technique to identify star configurations from large catalogues in a minimal time with low data storage requirements. Performance claims are supported by test data and identification results from a ground-based experimental star camera, the system consistently demonstrating a capability to identify numbers of stars in a single star camera image. Features include a search time scaling to the logarithm of the number of stars in the identification set, a reduced dependence on star magnitude data, and a method of accounting for camera measurement inaccuracy. The method is suitable for in-space application and offers the possibility of complete sky identification coverage using high accuracy star cameras. The approach produces a reliable, orientation independent star identification faster than conventional serial techniques and adaptable to many types of mission and application.

Citation Download Citation

Brendan Quine and Hugh F. Durrant-Whyte "Rapid star-pattern identification", Proc. SPIE 2739, Acquisition, Tracking, and Pointing X, (7 June 1996); https://doi.org/10.1117/12.241931

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