聲納陣列信號處理技術(shù)

第1 章 聲場概述············································································································1
1.1 引言···························································································································· 1
1.2 聲波的基本概念········································································································ 1
1.3 聲學(xué)基本物理量········································································································ 1
1.4 理想流體介質(zhì)中小振幅波傳播的基本規(guī)律······························································ 2
1.4.1 理想流體介質(zhì)······································································································· 2
1.4.2 連續(xù)性方程·········································································································· 3
1.4.3 狀態(tài)方程············································································································· 3
1.4.4 運(yùn)動方程············································································································· 4
1.4.5 波動方程············································································································· 4
1.4.6 速度勢函數(shù)·········································································································· 4
1.4.7 亥姆霍茲方程······································································································· 5
1.4.8 三種不同坐標(biāo)系下亥姆霍茲方程求解····································································· 5
1.4.9 線性濾波器理論框架下波動方程求解····································································· 9
1.4.10 介質(zhì)特性阻抗··································································································· 11
1.5 分層介質(zhì)中的波傳播······························································································· 11
1.5.1 平行平面層中波傳播的一般關(guān)系·········································································· 11
1.5.2 邊界條件··········································································································· 12
1.5.3 硬底均勻淺海聲場······························································································ 12
1.5.4 液態(tài)海底均勻淺海聲場······················································································· 14
1.6 聲場傳播基本模型··································································································· 15
1.7 聲學(xué)工具·················································································································· 16
1.8 本章小結(jié)·················································································································· 17
參考文獻(xiàn)······························································································································17
第2 章 基陣?yán)碚摶A(chǔ)···································································································18
2.1 引言·························································································································· 18
2.2 基陣的主要性能參數(shù)······························································································· 18
2.2.1 常見的基陣類型································································································· 18
2.2.2 主要性能參數(shù)····································································································· 18
2.3 均勻線列陣·············································································································· 21
2.3.1 基陣響應(yīng)（指向性函數(shù)） ···················································································· 22
2.3.2 乘積定理··········································································································· 24
2.3.3 幅度加權(quán)··········································································································· 25
2.3.4 波束掃描··········································································································· 25
2.3.5 離散空間傅里葉變換··························································································· 27
2.3.6 寬帶聲源·························