Design of two-dimensional zero reference codes by means of a global optimization method | Zendy

José Sáez–Landete | Zendy; José Alonso | Zendy; Eusebio Bernabéu | Zendy

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Design of two-dimensional zero reference codes by means of a global optimization method

Author(s) -

José Sáez–Landete,

José Alonso,

Eusebio Bernabéu

Publication year - 2005

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.13.004230

Subject(s) - zero (linguistics) , position (finance) , measure (data warehouse) , computer science , autocorrelation , optics , algorithm , signal (programming language) , mathematics , physics , statistics , philosophy , linguistics , finance , database , economics , programming language

A method to obtain the absolute measure of the position is by means of the autocorrelation of two zero reference marks. In one-axis measurement systems one dimensional mark are used and the design of these marks is relatively complex. When the movement is in two-axes, two dimensional reference marks are required and they are even harder to design. We report a method of global optimization to calculate the optimal two dimensional zero reference marks which generate the reference signal with the highest central peak. This method proves to be a powerful tool for solving this problem.

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