Study on the vibration effects of localizer antenna array ca

Abstract

Abstract:

This study employs a combined approach of field modal testing and dynamic simulation to comprehensively analyze

the vibration effects of a 350 km/h high-speed operation railway crossing airport flight area on the localizer (LOC)

antenna array. The results indicate that under the effect of vehicle -induced vibration, the LOC antenna array

exhibits the most significant vibration in the vertical direction, followed by the cross-track direction, with minimal

impact observed in the along-track direction. As tunnel burial depth increases, the vibration responses of the LOC

antenna array progressively diminish, particularly showing the most pronounced attenuation in vertical vibration.

LOC antenna array is prone to resonance phenomena at a frequency of 37.70 Hz. Within the 0-40 m range from the

high-speed railway centerline, both equipment rooms and the LOC antenna array display rapid attenuation of peak

vibration acceleration, while beyond 40 m, the attenuation rate gradually slows. To meet navigation equipment

vibration protection standards, it is recommended to maintain a minimum distance of 60 m between the LOC

antenna array and the high-speed railway centerline when high-speed railway crossing airport flight areas.

Key words:

high-speed railway, airport flight area, localizer (LOC) antenna array, equipment room, vehicle-induced vibration

CLC Number:

U15
V351

CHEN Yiting, YANG Jizhong, FENG Dubei, LIU Fangbo, LIU Jian, JIN Xuwei.

Study on the vibration effects of localizer antenna array ca

[J]. Journal of Civil Aviation University of China, 2025, 43(3): 45-52.

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