近海面蒸发波导理论模型与特性

　　本书系统地介绍了近海面蒸发波导的理论模型与特性。全书共12 章，内容包括绪论、蒸发波导的基本概念、 蒸发波导预测模型、蒸发波导高度时空分布规律、蒸发波导环境特性实时监测及短期预报方法、蒸发波导与海水蒸发量的关系、蒸发波导中的电磁波传播模型、海洋蒸发波导中的电磁波传播特性、蒸发波导数据传输系统、蒸发波导反演方法、基于BP 神经网络算法的蒸发波导预测模型、蒸发波导环境特性数据库软件。本书融入了作者团队10 余年来在蒸发波导方面的科研成果，纳入了作者团队在国内外重要期刊上发表的20 余篇论文，同时也参考了少量国内外相关的研究成果。

　　杨坤德博士，西北工业大学教授、博士生导师，现任“海洋声学信息感知”工信部重点实验室主任、“水下信息与控制”国家级重点实验室副主任、航海学院科研副院长。主要从事水声工程的教学与科研，研究方向包括海洋声学、水声信号与信息处理、水声系统设计与集成等。

目 录
第1 章 绪论 ································································································.1
1.1 蒸发波导的研究背景与意义 ··································································.1
1.2 蒸发波导的研究历史和现状 ··································································.5
1.2.1 蒸发波导修正折射率剖面的测量方法和预测模型研究 ························.7
1.2.2 蒸发波导高度时空分布规律研究 ·················································.10
1.2.3 蒸发波导环境特性实时监测及短期预报方法研究 ····························.12
1.2.4 蒸发波导中的电磁波传播理论和传播模型研究 ·······························.14
1.2.5 蒸发波导对船载电子系统的应用影响研究 ·····································.16
1.3 本书的主要内容 ···············································································.16
本章参考文献 ·························································································.18
第2 章 蒸发波导的基本概念 ·········································································.24
2.1 对流层折射 ·····················································································.24
2.1.1 球面分层大气中的折射定律 ·······················································.24
2.1.2 射线的曲率半径 ······································································.25
2.1.3 折射的分类 ············································································.26
2.1.4 修正折射率 ············································································.28
2.2 对流层大气波导的分类 ······································································.29
本章小结 ·······························································································.30
本章参考文献 ·························································································.30
第3 章 蒸发波导预测模型 ············································································.31
3.1 大气运动的基本概念 ·········································································.31
3.1.1 大气运动的基本方程 ································································.31
3.1.2 大气中尺度环流 ······································································.31
3.1.3 莫宁-奥布霍夫相似理论 ····························································.32
3.2 蒸发波导预测模型——PJ 模型 ····························································.33
3.2.1 PJ 模型的基本理论 ···································································.33
3.2.2 计算机仿真结果 ······································································.35
3.3 蒸发波导预测模型——伪折射率模型 ···················································.37
3.3.1 伪折射率模型的基本理论 ··························································.37
3.3.2 计算机仿真结果 ······································································.40
3.4 蒸发波导预测模型——NPS 模型 ·························································.41
3.4.1 NPS 模型 ···············································································.42
3.4.2 NPS 模型在稳定条件下的改进 ····················································.44
3.5 蒸发波导高度对气象要素的敏感性分析 ················································.46
3.6 冷空气条件下不同蒸发波导预测模型的对比 ··········································.48
3.6.1 4 种蒸发波导预测模型的对比 ·····················································.49
3.6.2 冷空气条件下的电磁波传播实验 ·················································.56
本章小结 ·······························································································.63
本章参考文献 ·························································································.63
第4 章 蒸发波导高度时空分布规律 ································································.65
4.1 蒸发波导统计分析的方法与数据源 ······················································.65
4.2 世界海洋蒸发波导高度的时空分布规律及其成因分析 ······························.70
4.2.1 世界海洋蒸发波导高度的时空分布规律 ········································.70
4.2.2 世界海洋蒸发波导高度的时空分布规律的成因分析 ·························.74
4.3 西太平洋蒸发波导高度的时空分布规律及其成因分析 ······························.77
4.3.1 西太平洋蒸发波导高度的时空分布规律 ········································.77
4.3.2 西太平洋蒸发波导高度的时空分布规律的成因分析 ·························.82
4.4 中国南海蒸发波导高度的时空分布规律及其成因分析 ······························.87
4.4.1 中国南海蒸发波导高度的时空分布规律 ········································.88
4.4.2 中国南海蒸发波导高度的时空分布规律的成因分析 ·························.94
4.5 亚丁湾蒸发波导高度的时空分布规律及其成因分析 ·································.96
4.5.1 亚丁湾蒸发波导高度的时空分布规律 ·······4