TSTIM (May90)                   velcal                   TSTIM (May90)



NAME
    tstim -- self-test script for VELCAL package
    
    
USAGE
    tstim
    
    
DESCRIPTION
    
    TSTIM   generates   synthetic   oscillation   (velocity,  intensity, 
    modulation),  east  calibration,  and   west   calibration   images. 
    Wide-band  and  narrow-band  correction  images  are  generated  and 
    applied to the oscillation  image.  This  corrupted  image  is  then
    converted  to  a three-phase intensity image to simulate the Fourier
    Tach.   Vcor  processes  the  test  image  to  obtain  the  velocity 
    corrected  image,  which is then compared to the input VIM image. If
    the corrected image agrees with the original uncorrupted  VIM  image
    with  a  standard  deviation  less  than or equal to 0.01 m/sec, the
    test is successful and the following  message  is  returned  to  the
    standard out
                         "!!! PASSED SELF-TEST!!!".

    Otherwise,  the test fails and the following is sent to the standard
    out
                        "!!! FAILED SELF-TEST !!!".

    The following steps are performed in the processing:
    
        generate synthetic vim image
    
        generate synthetic east and west calibration images
    
        calculate wide-band correction image
    
        calculate narrow-band correction image
    
        convert input from VIM to VMI
    
        add narrow-band effects to  oscillation image
    
        add wide-band effects to oscillation  image
    
        write laser phase into first 3 rows of oscillation image
    
        convert corrupted image from VMI to III
    
        call VCOR to calibrate velocity band of oscillation image
    
        take difference between input velocity and calibrated velocity
    
        take standard deviation of difference image
    
        delete all temporary image files beginning with "tstim"
    
    
    
SEE ALSO
    genvim, gencal, getcal, sdtst, 
    vcor, vmi, wlmcalc