WCSE 2020 Summer
ISBN: 978-981-14-4787-7 DOI: 10.18178/wcse.2020.06.063

Research on Contour Plane Coverage of 20-unit Localizer Antenna Array

C.Q.Qu, Y.He, L.Zuo

Abstract— Localizer beacon provides horizontal indication to airplane. The signal radiated from localizer antennas makes aircraft aim at the center line of runway. Also, the localizer beacon provides its particular identified signal of Instrument Landing System (ILS). Whether the signal coverage zone radiated from the localizer antenna system is satisfied the coverage requirement plays a decisive role in flight check. The Earth curvature effect was considered, consequently, the corresponding error of height and distance were also revised in wide area situation. The three-dimensional mathematical model of localizer beacon of 7220A was established in detail. Both the horizontal (θh: 0°~360°) and vertical (θv: 0°~180°) electromagnetic field distribution of Logical Periodic Dipole Antenna (LPDA) array were presented. According to flight check procedure, the electromagnetic field distributed was further researched in specific contour plane. The height of the localizer antenna (ha) has a close relationship to signal distribution. So it plays an important part in the intensity of radio frequency (RF). The contour plane higher (hfly= 1200 m) and lower (hfly= 300 m) than that of the routine flight altitude (hfly= 600 m) with a series of height of antenna (ha= 2.5 m, 3.0 m, 3.5 m, 4.0 m) were also analyzed

Index Terms— Localizer Beacon, Contour Plane, Signal Coverage, Antenna Height

C.Q.Qu, Y.He, L.Zuo
East China Regional Air Traffic Management Bureau of Civil Aviation of China, CHINA


Cite: C.Q.Qu, Y.He, L.Zuo " Research on Contour Plane Coverage of 20-unit Localizer Antenna Array " Proceedings of 2020 the 10th International Workshop on Computer Science and Engineering (WCSE 2020), pp.425-434 , Shanghai, China, 19-21 June, 2020.