Research on Height and Diameter of Doppler VHF Omnidirectional Beacon in Complex Environment

3rd International Conference on Aeronautical Materials and Aerospace Engineering

航空航天工程

Fei, Liang^1 ; Yue, Hu^1 ; Yuankai, Li^1

Second Research Institution of CAAC, Cheng Du

610041, China^1

关键词: Complex environments;    Doppler;    Fresnel zones;    Lateral multipath;    Multipath;    Paper research;    Signal coverage;    Surrounding buildings;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/608/1/012005/pdf
DOI  :  10.1088/1757-899X/608/1/012005

学科分类：航空航天科学

来源: IOP

【 摘 要 】

With the development of community around Doppler VHF omnidirectional beacon(DVOR), more and more DVORs are restricted, and even severely disabled. The DVOR's counterpoise can be elevated to improve the coverage. But raising counterpoise will cause some problems such as null and worse bearing error. The paper research the lateral multipath, longitudinal multipath, height and diameter of counterpoise from the null, the first Fresnel zone, signal coverage, bearing error combing surrounding buildings and terrain, providing some technical means for improve or eliminate nulls and bearing error in construction of DVOR, and pre-evaluating whether it can pass the flight inspection after the completion of construction.