SPP location with spherical ray tracing by refractive index
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Assuming the refractive index from satellite to top of atmosphere is 1, with electromagnetic wave velocity as light speed c. The atmosphere can be divided into multiple layers. For a specific layer with bottom/top velocities v1,v2 and radii r1,r2, the wave velocity v within this layer follows the spherical coordinate formula centered at Earth:，whereand. For incident electromagnetic wave with ray parameter p, the travel time through this layer iswhere，The horizontal arc traversed by the wave in this layer is:
创建时间：
2025-05-23
