When the last major version of AIXM was released -AIXM 5.1 - everybody concerned noticed that there was a big change compared to the previous one – AIXM 4.5. But what are actually the big differences between these two versions of AIXM? … [Read more...]
Vincenty’s formulae (Direct & Inverse Calculation)
Vincenty's formulae are two related iterative methods used in geodesy to calculate the distance between two points on the surface of the Earth, using an accurate ellipsoidal model of the Earth (e.g. the WGS 84 reference ellipsoid). The formulas were developed by Thaddeus Vincenty in 1975 and published in the Survey Review. … [Read more...]
Identification of aeronautical information
This article will discuss two different strategies for uniquely identifying aeronautical data and their advantages resp. disadvantages as well as advise, why combining them could be the solution to hit the spot. … [Read more...]
The story of the Geodetic Calculation Services – GCS
Once upon a time there was an Aeronautical Information Service officer in a Country far away… He regularly received a bunch of ATS Route Data from different Data Originators…. … [Read more...]