艦船尾跡是真實海場景中不可缺失的部分，是識別艦船目標的類型、位置、航速和航向信息等特征的重要途徑。 本書共8 章，詳細闡述了Kelvin 尾跡、含湍流遠場綜合尾跡、泡沫流尾跡、近場尾跡、內(nèi)波尾跡和水下運動目標尾跡的幾何建模、電磁散射建模和合成孔徑雷達（SAR）成像仿真技術(shù)；結(jié)合計算流體力學（CFD）仿真技術(shù)和電磁散射的調(diào)制譜優(yōu)化面元模型，將仿真模型應(yīng)用于艦船尾跡的SAR 圖像特征檢測、基于尾跡的艦船目標參數(shù)反演和浮標目標隱蔽優(yōu)化設(shè)計工程中。本書構(gòu)建了一套基于艦船尾跡流場的電磁散射特性分析和雷達圖像仿真的系統(tǒng)理論和應(yīng)用方法，使讀者能夠通過本書的學習掌握運動艦船尾跡的電磁散射機理和成像仿真方法，靈活解決實際工程問題。 本書適合從事雷達設(shè)計與評估、微波遙感、雷達目標與環(huán)境特性、電磁成像算法與圖像理解的相關(guān)科研工作人員閱讀，也可作為高等學校相關(guān)專業(yè)研究生的教學參考用書。
張民教授，1997年6至今，在西安電子科技大學工作，長期從事復(fù)雜目標與環(huán)境電磁散射與輻射特性、目標特征識別與電磁成像算法的研究工作。分別于2002年、2003年-2004年和2008年分別赴法國魯昂大學、新加坡國立大學和法國菲涅爾實驗室從事中法先進合作項目、微波集成電路和微波材料表面電磁散射特性的相關(guān)研究工作。
第1 章 艦船尾跡電磁散射的理論基礎(chǔ)·········································001
1.1 海浪和艦船尾跡的基本概念········································002
1.1.1 海浪仿真·······················································002
1.1.2 典型海譜函數(shù)·················································005
1.1.3 艦船尾跡的基本類型·······································.011
1.2 海面與艦船尾跡電磁散射的計算基礎(chǔ)····························017
1.2.1 Bragg 散射理論···············································018
1.2.2 半確定面元散射模型········································020
1.2.3 海面散射場分析··············································023
1.3 本章小結(jié)································································026
參考文獻······································································027
第2 章 Kelvin 尾跡······························································031
2.1 Kelvin 尾跡流場模型·················································032
2.1.1 船行波基本特征··············································032
2.1.2 Kelvin 尾跡波高場···········································033
2.1.3 Kelvin 尾跡仿真結(jié)果········································035
2.2 海面調(diào)制理論··························································037
2.2.1 海浪波的流體力學描述·····································037
2.2.2 傾斜調(diào)制·······················································038
2.2.3 流體力學調(diào)制·················································039
2.2.4 速度聚束調(diào)制·················································040
2.2.5 三種調(diào)制作用對比···········································041
2.3 速度聚束成像模型與尾跡成像仿真·······························043
2.3.1 實孔徑雷達和合成孔徑雷達·······························043
2.3.2 Kelvin 尾跡SAR 成像仿真·································045
2.3.3 Kelvin 尾跡SAR 圖像特性分析···························048
2.3.4 Kelvin 尾跡中的窄尾跡分量·······························057
2.4 本章小結(jié)································································061
參考文獻······································································062
第3 章 湍流遠場綜合尾跡·······················································063
3.1 遠場湍流尾跡的流場仿真···········································064
3.1.1 CFD 理論基礎(chǔ)·················································065
3.1.2 基于CFD 理論的遠場尾跡仿真···························068
3.2 調(diào)制譜面元散射模型·················································069
3.2.1 調(diào)制譜方程····················································070
3.2.2 調(diào)制譜源項····················································071
3.2.3 調(diào)制譜的求解·················································075
3.2.4 基于調(diào)制譜的海面散射·····································078
3.3 湍流尾跡散射場分析·················································079
3.3.1 尾跡的背景波調(diào)制作用·····································079
3.3.2 遠場綜合尾跡SAR 成像····································083
3.4 本章小結(jié)································································087
參考文獻······································································087
第4 章 泡沫流尾跡·······························································090
4.1 泡沫流尾跡的理論基礎(chǔ)··············································090
4.1.1 泡沫層反射率·················································090
4.1.2 泡沫覆蓋率····················································093
4.2 泡沫海面的體散射統(tǒng)計模型········································095
4.2.1 球形氣泡的電磁散射特性··································095
4.2.2 散射矩陣·······················································099
4.2.3 泡沫海面體散射的VRT 模型······························104
4.3 泡沫流尾跡的相干散射場模型····································.110
4.3.1 泡沫層的相干散射場模型·································.110
4.3.2 仿真結(jié)果與分析·············································.115
4.4 本章小結(jié)································································120
參考文獻······································································121
第5 章 近場尾跡··································································123
5.1 近場尾跡的幾何建�！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ�124
5.1.1 尾跡流場仿真設(shè)置···········································125
5.1.2 近場尾跡仿真結(jié)果···········································126
5.2 近場尾跡電磁散射的算法···········································129
5.2.1 網(wǎng)格轉(zhuǎn)換和消隱處理········································129
5.2.2 迭代物理光學法（IPO）····································131
5.2.3 迭代優(yōu)化技術(shù)·················································133
5.3 近場尾跡的電磁散射特性分析·····································134
5.3.1 FBIPO 算法驗證與分析·····································134
5.3.2 近場尾跡電磁散射總場分析·······························136
5.3.3 近場尾跡電磁散射場分布··································139
5.4 本章小結(jié)································································143
參考文獻······································································143
第6 章 內(nèi)波尾跡··································································146
6.1 內(nèi)波尾跡流場特性····················································146
6.1.1 內(nèi)波尾跡仿真方法···········································146
6.1.2 離散內(nèi)波層的波動···········································147
6.1.3 擴散內(nèi)波層的波動···········································151
6.1.4 內(nèi)波尾跡波高反演···········································156
6.1.5 內(nèi)波尾跡仿真結(jié)果···········································158
6.2 內(nèi)波尾跡電磁散射計算··············································160
6.2.1 小斜率近似模型··············································160
6.2.2 內(nèi)波尾跡對海面電磁散射系數(shù)的影響····················163
6.2.3 內(nèi)波尾跡的電磁散射分布與SAR 成像··················172
6.3 本章小節(jié)································································182
參考文獻······································································183
第7 章 水下運動目標尾跡·······················································185
7.1 水下運動目標尾跡流場仿真········································186
7.1.1 均勻流下的水下運動目標尾跡····························186
7.1.2 內(nèi)波尾跡與海水密度分層··································193
7.1.3 任意分層條件下的水下運動目標尾跡····················196
7.2 水下運動目標尾跡SAR 成像仿真·································198
7.2.1 水下運動目標尾跡散射場分布····························198
7.2.2 水下運動目標尾跡SAR 成像······························200
7.3 本章小結(jié)································································209
參考文獻······································································209
第8 章 艦船尾跡檢測與特征提取··············································212
8.1 艦船尾跡檢測基礎(chǔ)····················································212
8.1.1 Radon 變換····················································212
8.1.2 尾跡線性特征增強···········································215
8.1.3 尾跡線性特征檢測···········································219
8.2 基于神經(jīng)網(wǎng)絡(luò)的尾跡SAR 圖像檢測······························222
8.2.1 Faster R-CNN··················································222
8.2.2 樣本數(shù)據(jù)處理·················································224
8.2.3 檢測結(jié)果與分析··············································225
8.3 基于尾跡的艦船參數(shù)反演···········································227
8.3.1 基于波幅函數(shù)的艦船尺寸反演····························227
8.3.2 基于尾跡圖像的艦船航速估計····························229
8.3.3 艦船尾跡空間頻譜分量分析·······························231
8.4 基于尾跡的浮標目標隱蔽優(yōu)化方法·······························235
8.4.1 流場仿真與參數(shù)設(shè)定········································235
8.4.2 浮標目標的電磁散射特性與SAR 圖像··················237
8.4.3 目標尾跡的可探測性評判標準····························241
8.4.4 浮標目標的隱蔽優(yōu)化方法探討····························243
8.5 本章小結(jié)································································245
參考文獻······································································245
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