The more the requirements are specified, the less likely they are to be met with COTS (commercial off-the-shelf) solutions.
One often finds special software modules in the market that may suit some requirements. However, the associated support structure which is necessary to secure reliable use, is often missing. The DFS had this problem with a software module designed for the qualification of GPS (global positioning system) data.
The US-based manufacturer of this software, “RAIM-APS”, did not have a support structure in Germany, and so AC-B took on the challenge by analyzing the SW architecture and porting the SW in the desired operating system, as well as setting up the corresponding documentation.
Since then, AC-B has been DFS’s partner located within reach to resolve all questions related to the daily use and maintenance of RAIM-APS.