| 摘要 |
Computer software, controller and method for generating a desired pilot signal for driving a vibratory source. The method includes steps for selecting a pilot target amplitude spectrum for the vibratory source; determining an initial pilot signal that matches the pilot target amplitude spectrum; associating the initial pilot signal with first and second frequency bands, the second frequency band including a high frequency end of a range of the vibratory source; band-passing a first part of the initial pilot signal associated with the first frequency band with a first band-pass configuration; band-passing a second part of the initial pilot signal associated with the second frequency band with a second band-pass configuration; level compressing the first and second parts of the initial pilot signal; recombining the first and second parts of the initial pilot signal to form a recombined pilot signal; and processing the recombined pilot signal to obtain the desired pilot signal. Figure 18 Selecting a pilot target amplitude spectrum for the vibratory source r1 802 Determining an initial pilot signal that matches the pilot target amplitude spectrum Associating the initial pilot signal with at first and second frequency bands, the second frequency band including a high frequency end of a range of the vibratory source r1806 Selecting a first bandpass configuration for the first frequency band and a second bandpass configuration for the second frequency band Bandpassing a first part of the initial pilot signal associated with the fsrst frequency band with the first bandpass configuration Bandpassing a second part of the initial pilot signal associated with the second frequency band with the second bandpass configuration I r1812 Level compressing the first and second parts of the initial pilot signal r1814 Recombining the first and second parts of the initial pilot signal to form a recombined pilot signal Processing the recombined pilot signal to obtain the desired pilot signal |
