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)

Arguments

    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

Spatial dynamics infrastructure

Version 2.8, authors: Ke Dai, Ilya Kuprov