New hangar and ILS compatibility study
A client of airsight, a large international Airport, was in this situation by planning to build a new maintenance hangar and warehouse structure, airside and in relative close vicinity to the main runway (though respecting the physical safeguarding criteria).
As this facility infringed some of the CNS safeguarding surfaces for ILS and DME published in ICAO EUR Doc 015 (European Guidance Material on Managing Building Restricted Areas), a CNS impact assessment had to be conducted and the responsible project developer commissioned this undertaking to airsight.
This project was conducted using a 3D modelling of the proposed construction and airport environment together with numerical simulations of the signal in space, incl. possible distortion or reflection induced by structure. This method used by airsight has been validated by several trials and is commonly accepted by many Civil Aviation Authorities worldwide. It takes into account the relevant parameters such as type and characteristics of antennas, reflectivity of the building materials and is further calibrated for more accuracy with the results of the last flight inspections.
The results of the analysis could be used to validate the design of the proposed facilities prior its approval and construction.