Complex sentence: First-break picking is that of detecting or picking the onset arrivals of refracted signals from all the signals received by the receiver arrays and produced by a particular source signal generation, it is also called first arrival picking or first break detection.
Split into simpler sentences: First-break picking detecting or picking the onset arrivals of refracted signals from all the signals received by receiver arrays and produced by a particular source signal generation. It is also called first arrival picking or first break detection.