Additional processing of the data array obtained from scanning a specimen by a radiation-data converter is proposed. This approach makes it possible to improve the accuracy with which dimensions and locations of chara...
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Additional processing of the data array obtained from scanning a specimen by a radiation-data converter is proposed. This approach makes it possible to improve the accuracy with which dimensions and locations of characteristic zones are determined in rod-type specimens. The procedure involves binary coding of the moving-average function and restoring the array's envelope by comparing a fixed-length sample, which moves along the binary array, to standard samples during preliminary conversion of samples into codes-products.
We report an experimental study of discrete gap solitons in binary arrays of optical waveguides. We observe self-focusing indicating soliton generation when the inclination angle of an input beam is slightly above the...
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We report an experimental study of discrete gap solitons in binary arrays of optical waveguides. We observe self-focusing indicating soliton generation when the inclination angle of an input beam is slightly above the Bragg angle and show that the propagation direction of the emerging gap soliton is influenced by the effect of interband momentum exchange. (C) 2004 Optical Society of America.
A Barker array is a two-dimensional array with elements +/-1 such that all out-of-phase aperiodic autocorrelation coefficients are 0, 1, or -1. No s x t Barker array with s, t > 1 and (s, t) not-equal (2, 2) is kno...
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A Barker array is a two-dimensional array with elements +/-1 such that all out-of-phase aperiodic autocorrelation coefficients are 0, 1, or -1. No s x t Barker array with s, t > 1 and (s, t) not-equal (2, 2) is known, and it is conjectured that none exists. Nonexistence results for a class of arrays that includes Barker arrays have been previously given, in the case where st is even. We prove nonexistence results for this class of arrays in the caw where st is odd, providing further support for the Barker array conjecture.
A Barker array is a two-dimensional array with elements +/-1 such that all out-of-phase aperiodic autocorrelation coefficients are 0, 1, or -1. No s x t Barker array with s, t > 1 and (s, t) not-equal (2, 2) is kno...
详细信息
A Barker array is a two-dimensional array with elements +/-1 such that all out-of-phase aperiodic autocorrelation coefficients are 0, 1, or -1. No s x t Barker array with s, t > 1 and (s, t) not-equal (2, 2) is known, and it is conjectured that none exists. A class of arrays that includes Barker arrays is defined. Nonexistence results for this class of arrays in the case st even, providing support for the Barker array conjecture, are proved. Several connections, in the case st even, between this class of arrays and perfect, quasi-perfect, and doubly quasi-perfect binary arrays are demonstrated.
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