VISAR error analysis and enhancement

Barry T. Neyer

doi:10.1117/12.161371

11 October 1993 VISAR error analysis and enhancement

Barry T. Neyer

Proceedings Volume 2002, Ultrahigh- and High-Speed Photography, Videography, and Photonics '93; (1993) https://doi.org/10.1117/12.161371
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

A VISAR (velocity interferometer system for any reflector) determines the velocity of a moving object by measuring the Doppler shift with an unequal path length interferometer. This paper analyzes the configuration in the case where the optics are not perfect, (i.e., beam splitters not 50%, waveplates not exact or misaligned, improper polarization, etc.). It is shown that perfect interferometric information can be recovered even with far from perfect optical components.

Citation Download Citation

Barry T. Neyer "VISAR error analysis and enhancement", Proc. SPIE 2002, Ultrahigh- and High-Speed Photography, Videography, and Photonics '93, (11 October 1993); https://doi.org/10.1117/12.161371

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