Abstract
The validities of two numerical methods in scattering computations are examined with respect to scatterer's composition, size, and aspect ratio. The results show that while both Discrete Dipole Approximation (DDA) and Finite-Difference-Time-Domain) methods work properly for non-absorbing ice particles, the DDA fails in predicting the extinction cross-section for water which is strongly absorbing. Both methods are able to compute scattering by particles of high aspect ratio, while the T-matrix method fails after, the aspect ratio in > 7. The DDA seems more efficient for small particles, whereas the FDTD method is more feasible for large scatterers.
| Original language | English |
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| Pages | 108-110 |
| Number of pages | 3 |
| State | Published - 1995 |
| Event | Proceedings of the 1995 27th Conference on Radar Meteorology - Vail, CO, USA Duration: Oct 9 1995 → Oct 13 1995 |
Conference
| Conference | Proceedings of the 1995 27th Conference on Radar Meteorology |
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| City | Vail, CO, USA |
| Period | 10/9/95 → 10/13/95 |