qxspen_kernel.m

Distortion kernel of the QxSPEN experiment and its derivatives.

Syntax

    [K,dK_dgam,dK_ddel]=qxspen_kernel(FOVy,NSR,Nyacq,alp,bet,gam,del)

Parameters

    FOVy    - field of view along Y, mm

    NSR     - number of points in the reconstruction
              by regularisation

    Nyacq   - number of points that is acquired
              by the instrument

    alp     - an uncertain magic number that IK does
              not understand, ask Ke Dai

    bet     - an uncertain magic number that IK does
              not understand, ask Ke Dai

    gam     - slope of the linear phase, rad/mm

    del     - constant phase, radians

Outputs

    K       - QxSPEN kernel matrix

    dK_dgam - derivative of K with respect to gam

    dK_ddel - derivative of K with respect to del

Notes

A dangerous numerical integration stage with a fixed point count is used, let us know if you want this improved.

See also

corrfun.m, fdhess.m, fdkup.m, fdlap.m, fdmat.m, fdvec.m, fdweights.m, fpl2phan.m, fpl2rho.m, hydrodynamics.m, interpmat.m, oscillator.m, overwound.m, phan2fpl.m, spden.m, Kernel_utilities

Version 2.8, authors: Ke Dai, Ilya Kuprov