// Code adapted FROM getUserParameters.m and getSARparams*.m
// (rodric rabbah, <rabbah@mit.edu>)

static {
    float PI  = 3.14159265358979;
    float PI2 = 2 * PI;

    // getUserParameters.m
    float SCALE_FACTOR = 1.0;
    
    // getSARparams0.m
    float ASPECT_RATIO = 0.4;
    float RANGE_FACTOR = 10.0;
    
    /* synthetic aperture is 2*L */
    float L = 100 * SCALE_FACTOR;
    
    /* target area in cross-range is within */
    float Y0 = L;

    /* target area in range is within [Xc-X0,Xc+X0] */
    float X0 = Y0 * ASPECT_RATIO;

    /* range distance to center of target area */
    float Xc = Y0 * RANGE_FACTOR;                

    // getSARparams.m
    float RELATIVE_BANDWIDTH = 0.5;
    int   RPULSE = 75;

    /* propagation speed */
    float c = 3e8;

    /* carrier frequency */
    float fc = 400e6;

    /* spatial/geometric parameters */
    float Rmin = Xc - X0;
    float Rmax = sqrt(((Xc + X0)*(Xc + X0)) + ((Y0 + L)*(Y0 + L)));

    /* chirp pulse duration */
    float Tp = RPULSE / c;    

    /* baseband bandwidth */
    float f0 = 0.5 * RELATIVE_BANDWIDTH * fc;

    /* wavelength at highest frequency */
    float lambda_min = c / (fc + f0);

    init {}
}