Method and device for dynamic control of delays in gun controller

摘要

A method controls a delay of an air-gun in an aquatic seismic source. The method includes a step of receiving an attribute of the air-gun during the aquatic seismic survey; a step of calculating, based on a time-delay algorithm that uses the attribute, the asynchronization time of the air-gun; a step of determining whether the asynchronization time is smaller than a given time threshold; a step of instructing a controller to (1) wait for a predetermined time before calculating again the asynchronization time of the air-gun if the asynchronization time is smaller than the given time threshold, or (2) calculate an updated asynchronization time for the air-gun based on the attribute if the asynchronization time is larger than the given time threshold; and a step of sending the updated asynchronization time to a gun controller of the air-gun for adjusting a delay time for firing the air-gun. Figure 2 1.5 -~- mary 1 _Bubble pulse train E -0.5 -1 -- -- -- -1.5 - -host -2 -2.51 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Time (s) Figure 3 300 361 362 363 364 365 340 348 360 320 32C32 3 34 310 311 312 313 314 315 350 370 371 372 373 374 375