The features of the seismic RTH data acquisition system are determined by the features of the processing algorithms in the RTH method. Main differences from conventional data acquisition systems used in migration are:

• The location of sources can be either regular, for example, in the CDP, or irregular. The latter is more optimal in terms of velocity and accuracy of attributes construction due to the peculiarities of RTH algorithms.
• The average density of sources, that is, the number of sources per sq. km, can be several times less than for a standard CDP.

Example

Area of 3D CDP, 147.5 sq. km, 10129 sources, average folf 90, lines of sources and receivers are located every 300m, in the line sources and receivers are installed every 50m. The average density of sources is 68.6 sources/sq.km. After regularization of sources within the RTH technology, the density of sources used to construct RTH attributes decreases to 22.5 sources/sq km for a depth of 380 meters (left) and to 12.7 sources/sq km for a depth of 3980 meters (right). Sources involved in RTH attributes estimation are highlighted in green

Thus, the redundancy factor for RTH technology by sources for shallow depths is 3, for large depths 5.4