Evaluation of the DME siting factors with application to Palanga airfield

Abstract

ILS still remains in the use on the background of development of satellite navigation systems. Necessity of usage of the DME in lieu of ILS marker beacons arises especially for the ILS of coastal airfields. For this reason the main recommended DME siting criteria are discussed in this work. The model is presented for the calculation of distance measurement errors because of DME signal reflections. Some calculations are done uder the influence of worst case reflections from the objects of the Palanga airfield. The results of height measurements of Palanga airfield obstacles for DME signal are presented and analyzed with respect to some siting points of DME. Preferable DME siting point in airfield is evaluated.