Recent content by Sergei_G

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    Can NNLS algorithms solve overdetermined systems with positive constraints?

    Hello everyone, I'd like to solve overdetermined system of linear equations (in fact to fit experimental data) (like y1=C1*X11+C2*X12+...+Cm1*X1m) y2=C1*X21+C2*X22+..+Cm*X2m ... yn=C1*Xn1+C2*Xn2+...Cm*Xnm) sometimes n>>m sometimes n>~m , yi and xij are...
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    Calculation of diffraction picture (partially coherent illumination)

    Mmm, let's consider exposure time to be much larger than coherence time. I just checked again Fourier Optics, sec 6.1.3 Polychr Illumination, The Coh. and Incoh. Cases: (1) "Thus while any two object points may have different rel- ative phases, their absolute phases are varying with time in a...
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    Calculation of diffraction picture (partially coherent illumination)

    Thanks for the fast response. I'm still not sure at all if I understand this properly ^^ More precisely, I don't understand, what is formula of incoherent case for, if I have point source? Spatial coherence relates to the finit source size, doesn't it? What does formula with convolution of...
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    Calculation of diffraction picture (partially coherent illumination)

    Hello, I need to calculate diffraction picture produced by source generating partially coherent illumination. I read Born and Wolf, Goodman and still I do not have complete understanding. Suppose we have source with size d, simple object (let's take opaque rectangle) and detector. According...
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