Dynamic raytracing in inhomogeneous anisotropic media
نویسنده
چکیده
I present a new differential equation system for dynamic raytracing in inhomogeneous anisotropic media. This new system is computationally much more efficient than the traditional elastic-parameter based system as the right-hand-side functions of this new system are simple. Evaluation of these functions involves only differentiation of phase velocities. Evaluation of the right-hand-side functions of the traditional system, on the other hand, requires solving an eigenvalue problem and differentiating the resulting eigenvectors at each ray step, both being time-consuming processes. The new system is also simpler and more efficient than a previously proposed phase-velocity based dynamic raytracing system since the former is formulated in orthogonal coordinates while the latter in nonorthogonal ones.
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