欧美成人激情精品,国产亚洲精品久久久久久国模美,日本乱码一区二区三区芒果

內(nèi)容簡介

　　艦船尾跡是真實(shí)海場景中不可缺失的部分，是識(shí)別艦船目標(biāo)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(xì)闡述了Kelvin 尾跡、含湍流遠(yuǎn)場綜合尾跡、泡沫流尾跡、近場尾跡、內(nèi)波尾跡和水下運(yùn)動(dòng)目標(biāo)尾跡的幾何建模、電磁散射建模和合成孔徑雷達(dá)（SAR）成像仿真技術(shù)；結(jié)合計(jì)算流體力學(xué)（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(biāo)參數(shù)反演和浮標(biāo)目標(biāo)隱蔽優(yōu)化設(shè)計(jì)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(dá)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(xué)習(xí)掌握運(yùn)動(dòng)艦船尾跡的電磁散射機(jī)理和成像仿真方法，靈活解決實(shí)際工程問題。本書適合從事雷達(dá)設(shè)計(jì)與評(píng)估、微波遙感、雷達(dá)目標(biāo)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(xué)校相關(guān)專業(yè)研究生的教學(xué)參考用書。

作者簡介

　　張民教授，1997年6至今，在西安電子科技大學(xué)工作，長期從事復(fù)雜目標(biāo)與環(huán)境電磁散射與輻射特性、目標(biāo)特征識(shí)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(xué)、新加坡國立大學(xué)和法國菲涅爾實(shí)驗(yàn)室從事中法先進(jìn)合作項(xiàng)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。

圖書目錄

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(jì)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(xiàn)······································································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(xué)描述·····································037
2.2.2 傾斜調(diào)制·······················································038
2.2.3 流體力學(xué)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(duì)比···········································041
2.3 速度聚束成像模型與尾跡成像仿真·······························043
2.3.1 實(shí)孔徑雷達(dá)和合成孔徑雷達(dá)·······························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(xiàn)······································································062
第3 章湍流遠(yuǎn)場綜合尾跡·······················································063
3.1 遠(yuǎn)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(yuǎn)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(xiàng)····················································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(yuǎn)場綜合尾跡SAR 成像····································083
3.4 本章小結(jié)································································087
參考文獻(xiàn)······································································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(jì)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(xiàn)······································································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?24
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(xué)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