| 摘要 |
Physical parameters are measured 103 for an array of seismic sources (e.g. airguns), preferably for each activation of the seismic sources. Calibration functions are obtained 101 and the measured physical parameters and calibration functions are applied 104 to a model, which generates a calibrated source signature for the array of seismic sources. Alternatively, the measured physical parameters are applied to a model, which generates a modelled source signature, and then the calibration functions are applied to the modelled source signature to generate the calibrated source signature. Alternatively, modelled source signatures are generated for each seismic source and then the calibration functions are applied to the modelled source signatures for each seismic source are combined, preferably by linear superposition, to generate the calibrated source signature for the array of seismic sources. The estimation of obtaining calibration functions includes the step of determining differences between a modelled source signature and a measured source signature for a seismic source and determining calibration functions that correct for said differences for the seismic source. The measured physical parameters may include: seismic source depths, seismic source geometry, seismic source relative timing, water pressure, atmospheric pressure. |
