Summary

The installation of ILS on difficult sites can be performed today with modern tridimensional tools. The purpose is to optimize the ILS to the given site or to determine the grading requirements such that the specifications can be met. A modification of the coverage requirements for the ILS glideslope is proposed which depends on the width of the corresponding Localizer (i.e. the runway length). Error sources for the flight check procedures are discussed which can be identified in parts by modern numerical methods. The complete procedure for a numerical installation of an ILS glide-slope on a difficult site is described.
 

References

/1/ GREVING G. Computer aided site analysis and site adapted installation - Efficient commissioning of landing systems, 8th IFIS, Denver 1994, pp. 175-182

/2/ LUEBBERS R., UNGVICHIAN V:, MITCHELL L. GTD Terrain reflection model applied to ILS glide slope, IEEE Trans. AES, January 1982, pp.11ff

/3/ CHAMBERLIN K. Computer modeling of MLS-signal in the presence of runway hump shadowing, Proceedings of ANTEM, Manitoba 1992, pp.566ff