基于射线描迹法微分形式的大气折射误差修正方法研究

卫佩佩; 杜晓燕; 江长荫

doi:10.11999/JEIT171131

基于射线描迹法微分形式的大气折射误差修正方法研究

doi: 10.11999/JEIT171131

1.
解放军信息工程大学信息系统工程学院郑州 450002
2.
郑州大学郑州 450002
3.
中国电波传播研究所新乡 453003

详细信息

作者简介:
卫佩佩：女，1990年生，博士生，研究方向为电波传播电磁计算及反演问题等

杜晓燕：女，1975年生，副教授，主要从事电磁场、微波技术与天线等的教学和科研工作

江长荫：男，1936年生，研究员，主要从事无线电波传播研究

通讯作者:
卫佩佩 18563113879@163.com

中图分类号: P225
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- 被引次数: 0
出版历程
- 收稿日期: 2017-12-04
- 修回日期: 2018-04-23
- 网络出版日期: 2018-06-07
- 刊出日期: 2018-08-01

Atmosphere Refractive Error Correction Method Based on Ray Tracing Differential Form

1.
School of Information Systems Engineering, PLA Information Engineering University, Zhengzhou 450002, China
2.
Zhengzhou University, Zhengzhou 450002, China
3.
China Research of Institute of Radiowave Propagation, Xinxiang 453003, China

摘要

摘要: 大气折射误差是影响各类无线电系统同步、跟踪、导航、定位精度的一个主要误差源。射线描迹法利用几何光学原理可以实现对该误差的精确修正。针对传统射线描迹法无法处理异常大气折射误差修正的问题，该文推导了射线描迹法的微分形式，并基于此提出适用于任意大气的折射误差修正方法。选取某地面测控站对目标的跟踪数据，验证了所提方法的可行性。此外，利用该方法对比分析了蒸发波导环境和标准大气环境对大气折射误差的影响。结果表明：完全陷获在蒸发波导内部的电波引入的大气折射误差是最显著的。所提方法为提高无线电系统在任意大气环境下的测量精度提供一种新的技术支持。
- 大气折射误差 /
- 射线描迹法 /
- 射线描迹法微分形式 /
- 任意大气环境
Abstract: Atmosphere refraction error is a main error factor to affect synchronization accuracy, tracing accuracy, navigation accuracy and positioning accuracy for various radio systems. On the basis of geometrical optics, the ray tracing method can precisely make this error correction. For the problem that traditional ray tracing method can not deal with the abnormal atmosphere, ray tracing differential form is derived and then a correction method suitable for arbitrary atmosphere is proposed. The tracing data from ground station are taken to test this method. In addition, the refractive error in evaporation duct is compared with that in standard atmosphere. The results show that the refractive error of radio wave trapped entirely in the duct has the biggest influence. The proposed method provides technique support for improving the measurement precision of radio system in arbitrary atmosphere.
- Atmosphere refractive error /
- Ray tracing /
- Ray tracing differential form /
- Arbitrary atmosphere environment

HTML全文

图 1 射线传播轨迹示意图

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图 2 大气折射率剖面

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图 3 大气折射误差分布图

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图 4 大气折射误差修正结果

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图 5 电波传播轨迹

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图 6 距离误差

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图 7 高度误差

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图 8 仰角误差

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图 9 视在距离100 km时大气折射误差统计图

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