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The nvector framework uses the normal vector to the Earth ellipsoid (called nvector) as a nonsingular position representation that turns out to be very convenient for practical position calculations. The nvector is simple to use and gives exact answers for all global positions, and all distances, for both ellipsoidal and spherical Earth models. This package is a translation of the 'Matlab' library from FFI, the Norwegian Defence Research Establishment, as described in Gade (2010) <doi:10.1017/S0373463309990415>.
Package details 


Author  Enrico Spinielli [aut, cre] (<https://orcid.org/0000000185849131>), EUROCONTROL [cph, fnd] 
Maintainer  Enrico Spinielli <enrico.spinielli@eurocontrol.int> 
License  MIT + file LICENSE 
Version  0.1.4 
URL  https://github.com/euctrlpru/nvctr 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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