Abstract：This paper has analyzed the calculation precision of G-S transformation and Hankel transformation, when n = 12 or 16, G-S transform applicability is wide and can assure accuracy, and the relative accuracy of Hankel transform is up to 10-6 orders. Based on time-domain airborne electromagnetic method in time domain and dipole-dipole device 1-D forward modeling algorithm,, the authors analyzed the precision of response to airborne electromagnetic wave when different parameters were selected. The results show that the G-S transformation value of an influence on calculation accuracy is considerable, and selection of parameters of Hankel transformation filtering has small effects on calculation accuracy.
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