宇航计测技术 ›› 2021, Vol. 41 ›› Issue (1): 58-63.doi: 10.12060/j.issn.1000-7202.2021.01.11

• 精密测试技术 • 上一篇    下一篇

ITU-R P.1546模型的修正影响和适用性研究

陈振源1,2;严天峰1,2;孙禹3;高锐1,2   

  1. 1.兰州交通大学 电子与信息工程学院,甘肃兰州 730070;
    2.甘肃省高精度北斗定位技术工程实验室,甘肃兰州 730070;
    3.中国铁路兰州局集团有限公司兰州通信段,甘肃兰州 730050
  • 出版日期:2021-02-25 发布日期:2022-03-07
  • 作者简介:陈振源(1995.10-),男,在读硕士,主要研究方向:模型覆盖和可视化技术。
  • 基金资助:
    甘肃省高等学校创新团队(2017C-09);光电技术与智能控制教育部重点实验室(兰州交通大学)开放课题(KFKT2018-16);兰州交通大学-天津大学创新基金项目(2018062)资助。

Research on Influence of Modifications and Applicability for the ITU-R P.1546 Model

CHEN Zhen-yuan1,2;YAN Tian-feng1,2;SUN Yu3;GAO Rui1,2   

  1. 1.School of Electronics and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;
    2.Gansu High Precision Beidou Positioning Technology Engineering Laboratory,Lanzhou 730070,China;
    3.Lanzhou Tongxin Section of China Railway Lanzhou Bureau Group Co.,LTD.,Lanzhou 730050,China
  • Online:2021-02-25 Published:2022-03-07

摘要: 为了分析ITU-R P.1546传播模型在兰州地区的准确性和适用性,在ITU-R P.1546建议书的基础上,通过Matlab对建议书中提到的修正方法进行修正,同时对兰州地区进行实际测试,并与传统Okumura-hata模型进行比较分析。分析结果表明:在兰州地区ITU-R P.1546传播模型相比于传统模型具有较高的精度,再通过对地形净空角、发射机的净空角、接收天线高度等参数的校正,使得模型损耗的均方误差在安宁地区降低了16.6%,白银地区降低了18.6%。其中当发射机和接收机路径之上存在较高障碍时,对模型的地形净空角的修正与否和实际损耗之间会存在较大的区别。该研究结果可为ITU-R P.1546模型的传播预测和本地化研究等方面提供参考依据。

关键词: ITU-R P.1546, 传播预测, 模型修正, 兰州地区, 数字高程模型

Abstract: In order to analyze the accuracy and applicability of the ITU-R P.1546 propagation model in Lanzhou,based on the ITU-R P.1546 proposal,the correction method mentioned in the proposal was modified by Matlab,and the actual test was carried out in Lanzhou,and compared with the traditional Okumura-hata model.The analysis results show that the ITU-R P.1546 propagation model in Lanzhou has a higher accuracy than the traditional model,and after correcting the terrain clearance angle,transmitter clearance angle and receiver antenna height,the mean square error of the model loss is reduced by 16.6% in Anning area and 18.6% in Baiyin area.When there are higher obstacles above the transmitter and receiver paths,there is a big difference between the correction of the model’s terrain clearance angle and the actual loss.The results of this study may provide a reference for the propagation prediction and localization study of the ITU-R P.1546 model.

Key words: ITU-R P.1546, Propagation prediction, Model updating, The Lanzhou area, Digital elevation model

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