Concept of precision in analog-based discrete numeric optical processors

Michael V. Morelli; Thomas F. Krile; John F. Walkup

doi:10.1117/12.187288

29 September 1994 Concept of precision in analog-based discrete numeric optical processors

Michael V. Morelli, Thomas F. Krile, John F. Walkup

Proceedings Volume 2297, Photonics for Processors, Neural Networks, and Memories II; (1994) https://doi.org/10.1117/12.187288
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Within this paper we discuss the precision of a fixed-point discrete numeric vector-matrix processor. The concept of precision relates to the quantity of numerically exact information in the processor's calculated result. This analysis is based on a signal space formulation which allows for the determination of precision from the uncertainty in the output signal space. Characteristics of the ideal signal space are explored and then the implications of simple nonideal temporal and spatial effects are considered. The resulting precision limitations are discussed in terms of numerical roundoff and significance errors.

Citation Download Citation

Michael V. Morelli, Thomas F. Krile, and John F. Walkup "Concept of precision in analog-based discrete numeric optical processors", Proc. SPIE 2297, Photonics for Processors, Neural Networks, and Memories II, (29 September 1994); https://doi.org/10.1117/12.187288

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