In order to understand better the propagation delay maps used for
this blog post, the animation below was created. References for the used method are
arXiv:1104.2248 and
this well-known book.
Up to 2-hop propagation is considered. In case there is more than one mode of propagation, the smallest non-ground-wave propagation delay is shown in the maps. If there is no ionospheric reflection, the ground-wave delay is shown.
- hop=0: no ionospheric reflection -> ground-wave propagation
- hop=1: one reflection
- hop=2: two reflections
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoWvowaGKShkNpYkuH_VWEwzcy2HLvejA0a_J9Ly7bEv4Q1dOqV_HiENf7rmH_8enMCNhkRhkjdjyvIwb0U65ddXgqYV9He-nJf17uMYs2pGnQzuht4DnEd_OIJFxdAkglDWOA5w_YC9o/s320/animated.gif) |
Propagation delays based on IRI2016 electron density profiles |
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJWcmaGn7xxUizQu6UJkiENruRoXDVVuEv9JuF2tlYHCyXTH7TXjP43PfVTdNBIvbJbvZAO7Uj7eSW-tnRBj6aN-6KUxorC7BVsTaxDI3zIHvh8gCOuuHG6GZMEtuQ0m3VDm6DX715a7E/s320/animated_2.gif) |
Propagation delays based on IRI2016 electron density profiles |
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