Ray Tracing Directly in a 3-D Ellipsoidal Earth Model for Multiphase Global Arrivals
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DOI: 10.1007/s00024-019-02186-4
Abstract: Seismic ray-tracing methods are widely used in seismology, with most such algorithms being executed in Cartesian or spherical coordinate systems. However, the actual Earth is not a perfect sphere but rather an ellipsoid, meaning that… read more here.
Keywords: earth model; ellipsoidal earth; ray tracing; earth ... See more keywords
Improved Transversal Polar Navigation Mechanism for Strapdown INS using Ellipsoidal Earth Model
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Navigation"
DOI: 10.1017/s0373463318000425
Abstract: As the geographical meridians converge rapidly, traditional inertial navigation methods fail in the polar regions. Classic transversal navigation methods can address the problem by transversal rotation of the original north and south poles, but this… read more here.
Keywords: navigation; earth model; ellipsoidal earth; using ellipsoidal ... See more keywords