| 摘要: |
| 为解决机场站坪区域多点定位系统定位检测率低的问题，基于射线追踪法与一致性几何绕射理论，建立了机场站坪区域的三维模型，仿真分析了复杂电磁环境中多点定位系统定位失败的原因与多径干扰来源,提出了抑制多径信号的定向接收天线方法。在机场站坪区域的仿真和实测结果表明，多点定位系统中采用定向接收天线的方法，可有效抑制多径干扰，显著提高多点定位系统定位检测率。 |
| 关键词: 多点定位系统 多径干扰抑制 定向天线 射线追踪法 一致性几何绕射理论 |
| DOI： |
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| 基金项目:国家自然科学基金民航联合基金(U1733109) |
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| A method for improving detection rate of multilateration system by directional antenna |
| JIANG Guannan,HUA Wei,GUO Jianhua,JIANG Kai |
| (School of Electronics and Information Engineering,Sichuan University,Chengdu 610065,China;The Second Research Institute of Civil Aviation Administration of China,Chengdu 610041,China) |
| Abstract: |
| To solve the problem of low detection rates of positioning for multilateration(MLAT) system in airport apron area,a 3D model of an airport apron region is established based on the ray tracing(RT) and the uniform theory of diffraction(UTD),the reasons of positioning failure and the source of multipath interference in complex electromagnetic environment are simulated and analyzed,and a directional antenna receiving method is proposed to suppress the multipath signal.The results of simulations and measurements in airport apron area show that the proposed method can effectively suppress the multipath interference and significantly improve the positioning detection rates in multilateration system. |
| Key words: multilateration system multipath interference suppression directional antenna ray tracing（RT） uniform theory of diffraction(UTD) |
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