High fidelity vibratory source seismic method

An apparatus for recording high resolution vibratory source data comprising:

• means for receiving electrical signals representing received seismic information;
• means for receiving measured signals representing a force generated into the ground;
• means for dividing said electrical signals with said measured signals to obtain earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals;
• means for deconvolving said earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals;
• correction means for performing statics correction on said deconvolved earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals;
• FK filtering means for said statics corrected earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals;
• array forming means for said filtered statics corrected earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals;
• recording means for said summed earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals;
• and
• display means for displaying said recorded summed earth reflectivity multiplied by a time derivative divided by a minimum phase transfer function signals.

A method for recording and pre-processing data generated by a vibrator including the steps of:

• obtaining data generated by a vibrator, said data representing a vibrator output multiplied by earth reflectivity;
• measuring a motion signal representing vibrator output in the frequency domain;
• determining a ratio of said data representing a vibrator output multiplied by earth reflectivity and said measured motion signal to remove the unknown applied force leaving data representing said earth reflectivity times a time derivative divided by a transfer function of minimum phase;
• performing minimum phase deconvolution to remove the time derivative divided by the transfer function of minimum phase and to obtain data representing said earth reflectivity;
• and
• recording said data representing earth reflectivity.