Modifications of a mosaic focal plane star tracker for scanning application

Mark A. Radovich Jr.

doi:10.1117/12.211495

12 June 1995 Modifications of a mosaic focal plane star tracker for scanning application

Mark A. Radovich Jr.

Proceedings Volume 2466, Space Guidance, Control, and Tracking II; (1995) https://doi.org/10.1117/12.211495
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

The Ball Aerospace Systems Division CT-631 Star Tracker is a miniaturized version of the previous CT-601/621 units; volume, power and weight have been reduced. The fundamental algorithm for driving a CCD and processing its output are software driven. This architecture lends itself to other applications, one of which is a Star Scanner. The CT-632 Star Scanner is a CT-631 Star Tracker, modified to operate on a platform spinning at rates at least two orders of magnitude greater than nominal tracker rates. Time delay integration is used to accumulate star image signal as it moves across the CCD. The image is processed by standard star tracker algorithms to determine star centroids and intensities. Output data, continually updated as stars leave the field of view, consists of X and Y angles and latency time for the sixteen brightest stars, and diagnostic data. Commands range from entire reprogram ability to simple mode commands. Sensitivity ranges from 0 M_I to 3.8 M_I.

Citation Download Citation

Mark A. Radovich Jr. "Modifications of a mosaic focal plane star tracker for scanning application", Proc. SPIE 2466, Space Guidance, Control, and Tracking II, (12 June 1995); https://doi.org/10.1117/12.211495

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