微波动态雨衰减时间序列模型的修正

doi:10.3969/j.issn.1001-2400.2016.01.015

J4 ›› 2016, Vol. 43 ›› Issue (1): 82-86.doi: 10.3969/j.issn.1001-2400.2016.01.015

微波动态雨衰减时间序列模型的修正

杨瑞科1;路同亚1;赵振维2;卢昌胜2

(1. 西安电子科技大学物理与光电工程学院，陕西西安 710071;
2. 中国电波传播研究所电波环境特性及模化技术重点实验室，山东青岛 266107)

收稿日期:2014-09-02 出版日期:2016-02-20 发布日期:2016-04-06
通讯作者: 杨瑞科
作者简介:杨瑞科(1963-)，男, 教授，博士, E-mail: ruikeyang@sohu.com．
基金资助:
国家自然科学基金资助项目(61179003)；电波环境特性及模化技术重点实验室专项资金资助项目

Improvement on the microwave dynamic rain attenuation time series model

YANG Ruike1;LU Tongya1;ZHAO Zhenwei2;LU Changsheng2

(1. School of Physics and Optoelectronic Engineering, Xidian Univ., Xi'an 710071, China;
2. China Research Institute of Radio Wave Propagation, Qingdao 266107, China)

Received:2014-09-02 Online:2016-02-20 Published:2016-04-06
Contact: YANG Ruike

摘要/Abstract

摘要：

为解决微波链路抗雨衰技术中动态雨衰减预测问题，利用增强MB模型模拟了中国典型的温带和亚热带雨区的12.5GHz雨衰减时间序列，并与实测雨衰序列的功率谱进行了比较，一致性很好，但降雨衰落斜率统计结果之间有差异．用循环插入法对增强MB的模拟进行修正，统计分析了雨衰落斜率和衰落持续时间的概率，结果显示，根据修正模拟数据与测量数据统计的衰落斜率有好的一致性，基于修正模拟数据的降雨衰落持续时间的统计也更接近于基于实测数据的统计结果和国际电信联盟无线电分委员会模型预测结果．表明该修正模型可用于中国典型雨区动态雨衰减的预测．

关键词: 微波, 传播, 雨衰减, 衰落统计

Abstract:

In ordor to investigate the dynamic rain attenuation forecast in countermeasure rain fade techniques on the microwave link, in typical temperate and subtropical rain areas in China, the power spectra for the rain attenuation time series simulated by the EMB (Enhanced Maseng and Bakken) model are in agreement with the measured results at 12.5GHz, but there are differences between the fade slopes statistics based on simulated series and measured data. The rain attenuation time series by the EMB model are improved by using a circular inserting data method. By the improved method, the statistical probabilities of the fade slopes are very close approximation to the measured results. The probabilities of the fade duration based on the simulated time series by the improved processes are compared with the results by unimproved processes, the results based on the measured data and by the ITU-R predicted results. It is shown that the statistical results for the fade slopes are improved, and that the differences between the fade duration probabilities by the improved series and measured data are smaller than that between the results by unimproved and measured. The results show that the improved process to the EMB model is feasible in typical rain areas in China.

Key words: microwave, propagation, rain attenuation, fade statistics

杨瑞科;路同亚;赵振维;卢昌胜. 微波动态雨衰减时间序列模型的修正[J]. J4, 2016, 43(1): 82-86.

YANG Ruike;LU Tongya;ZHAO Zhenwei;LU Changsheng. Improvement on the microwave dynamic rain attenuation time series model[J]. J4, 2016, 43(1): 82-86.

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微波动态雨衰减时间序列模型的修正

Improvement on the microwave dynamic rain attenuation time series model

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