不规则地形地波传播衰减因子的改进算法及结果一致性研究

周丽丽; 穆中林; 蒲玉蓉; 席晓莉

doi:10.11999/JEIT150077

不规则地形地波传播衰减因子的改进算法及结果一致性研究

doi: 10.11999/JEIT150077

1.
(陕西科技大学电气与信息工程学院西安 710021) ②(94559部队徐州 221005) ③(西安理工大学西安 710048)

基金项目:

国家自然科学基金(61401261, 61271091)，陕西省教育厅科研计划(14JK1084, 14JK1513)和陕西科技大学科研启动基金(BJ11-20)

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- 被引次数: 0
出版历程
- 收稿日期: 2015-01-13
- 修回日期: 2015-04-15
- 刊出日期: 2015-09-19

Improved Algorithm for Ground-wave Attenuation Factor Prediction over Irregular Terrain and Results Consistency Study

1.
(College of Electrical and Information Engineering, Shaanxi University of Science and Technology, Xi&rsquo
2.
(Unit No. 94559, Xuzhou 221005, China)

摘要

摘要: 针对低频地波衰减因子预测算法中积分方程算法与其它经典算法在均匀/分段均匀光滑路径模型下求解结果不一致的问题进行研究分析。引入球面校正因子和高程转换技术，对积分方程方法进行改进，提高其与其它经典算法在光滑路径模型下预测结果的一致性。在此基础上，将改进算法用于实际不规则地面模型地波衰减因子预测，并与实测结果进行比较。与原算法相比，改进后的算法更适合考虑地球曲率影响下复杂长距离地面及空中地波衰减因子的求解。
- 低频地波 /
- 地波衰减因子 /
- 积分方程方法
Abstract: The results of the integral equation method on the low-frequency ground-wave attenuation factor are inconsistent with other classic algorithms for the homogeneous/inhomogeneous smooth-path models. To solve this problem, a spherical correction factor and an elevation converting technique are introduced to the integral equation method. With these efforts, the results of the improved method are more consistent with other algorithms under the smooth-path conditions. Then, it is used for a real irregular-path model, and the calculated results are compared with the measured ones. It is shown that the proposed method is more suitable for the occasions both on the ground and in the air as the propagation path is long, irregular, and curved.
- Low-frequency ground wave /
- Ground-wave attenuation factor /
- Integral equation method

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