| 一种新的TLS仰角多径误差校正方法 |
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| 引用本文： | 龚昂.一种新的TLS仰角多径误差校正方法[J].科学技术与工程,2012,12(22):5479-5483. |
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| 作者姓名： | 龚昂 |
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| 作者单位： | 空军工程大学电讯工程学院 |
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| 基金项目： | 科研项目：应答着陆系统需求论证及关键技术分析（编号：DG100107） |
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| 摘 要： | 应答着陆系统（TLS）是一种基于应答机的精密进近着陆引导系统，由于要适用于野战环境，其多径效应的快速分析评估和抑制显得非常重要。针对地面反射是其仰角测量的主要多径干扰源这一情况。首先从反射面电磁特性分析入手，提出了地面反射信号的分析和估计方法。然后，在空域滤波的基础上对反射与直达信号的幅度比以及相位差进行了估计，提出了一种迭代求解直达信号相位的算法。仿真结果显示了该方法的良好性能
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| 关 键 词： | 应答着陆系统，多径效应，电磁特性，空域滤波，迭代算法 |
| 收稿时间： | 4/15/2012 1:05:52 PM |
| 修稿时间： | 4/15/2012 1:05:52 PM |
A New Method to Modify Elevation Multipath Error of TLS |
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| GangAng.A New Method to Modify Elevation Multipath Error of TLS[J].Science Technology and Engineering,2012,12(22):5479-5483. |
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| Authors: | GangAng |
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| Institution: | (Institute of Telecommunication Engineering,Air Force Engineering University,Xi’an 710077,P.R.China) |
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| Abstract: | Transponder landing system(TLS)is a transponder based precise approach landing system.Fast analysis and suppression of multipath effect is very important due to its field environment.In view of that ground-based reflection is the main multipath source of elevation measurement,method to analyze and estimate reflection signal is put forward based on electromagnetic characteristics of reflection medium.Then,amplitude ratio and phase difference value between direct and reflection signals are estimated based on spatial filtering,an iterative algorithm to derive direct signal phase is put forward.Simulation result proves the good performance of this method. |
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| Keywords: | Transponder Landing System Multipath effect electromagnetic characteristics spatial filter iterative algorithm |
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