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 2. Type of array rotation to find the difference between anisotropy and inhomogeneity influence.

For separation of anisotropy and inhomogeneity influence we recommend non-symmetrical rotation of arrays (for example, to rotate the D - array around the center of AB (or MN), instead of spacing center) and analysis of azimuthal diagrams' spectrum (Bolshakov et al., 1997). Even harmonics of spectrum are the result of anisotropy influence, while odd harmonics are the result of inhomogeneity influence. Dipole equatorial array is not so convenient for asymmetrical rotation, at which one dipole is gone along a circle’s arch, while other dipole turns around its center. For such rotation it is better to use array with one current electrode, for example T or Y-array or Arrow-type (AT) array. Only one current electrode is used as rotation center, while the second one is in infinity.

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