国产av一区二区电影,国产视频三区

內(nèi)容簡(jiǎn)介

　　陣列信號(hào)處理是現(xiàn)代聲納設(shè)備的核心功能之一。通過(guò)接收陣列的信號(hào)處理，可以獲取空間指向性增益，提高空間分辨和干擾抑制能力，實(shí)現(xiàn)對(duì)目標(biāo)的檢測(cè)與跟蹤、方位與距離估計(jì)；通過(guò)發(fā)射陣列的信號(hào)處理，可以獲取具有一定時(shí)延差或相位差的陣元信號(hào)，從而形成指向性發(fā)射波束，提高聲源級(jí)；通過(guò)空-時(shí)自適應(yīng)處理，可以提高對(duì)弱目標(biāo)的檢測(cè)能力。近年來(lái)，聲納技術(shù)不斷發(fā)展，出現(xiàn)了多線列陣聲納、連續(xù)波聲納、MIMO聲納等新體制聲納以及自適應(yīng)盲處理、時(shí)反處理、矢量信號(hào)處理、魯棒性波束形成、模基信號(hào)處理等新型處理算法，這些都是聲納陣列信號(hào)處理的發(fā)展與豐富。本書深入、系統(tǒng)地介紹了可應(yīng)用于實(shí)際聲納設(shè)備的陣列信號(hào)處理技術(shù)，在簡(jiǎn)單的原理接收基礎(chǔ)上又大量的計(jì)算機(jī)模擬仿真及湖、海試實(shí)際數(shù)據(jù)的處理結(jié)果。另外本書有較大篇幅的聲納陣列信號(hào)處理領(lǐng)域的新技術(shù)介紹。

作者簡(jiǎn)介

　　杜選民，1970年9月出生，研究員/博士生導(dǎo)師，畢業(yè)于哈爾濱工程大學(xué)，獲水聲工程專業(yè)博士學(xué)位?，F(xiàn)擔(dān)任中國(guó)船舶重工集團(tuán)公司第七二六研究所副所長(zhǎng)、水聲對(duì)抗技術(shù)重點(diǎn)實(shí)驗(yàn)室副主任、水聲對(duì)抗技術(shù)重點(diǎn)實(shí)驗(yàn)室學(xué)術(shù)委員會(huì)副主任委員、水聲對(duì)抗國(guó)防科技創(chuàng)新團(tuán)隊(duì)帶頭人、上海市聲學(xué)學(xué)會(huì)理事、《聲學(xué)學(xué)報(bào)》《聲學(xué)技術(shù)》《艦船科學(xué)技術(shù)》編委會(huì)委員。從事水聲及水聲對(duì)抗技術(shù)研究工作20余年，主持研制了艦用魚雷報(bào)警聲納、艦水聲對(duì)抗系統(tǒng)、港口近程水下警戒探測(cè)系統(tǒng)等裝備，均填補(bǔ)*內(nèi)空白，獲國(guó)防科技進(jìn)步一等獎(jiǎng)2項(xiàng)、二等獎(jiǎng)2項(xiàng)、三等獎(jiǎng)2項(xiàng)。在國(guó)內(nèi)首次解決了拖線陣左右舷分辨、高速運(yùn)動(dòng)目標(biāo)自適應(yīng)檢測(cè)與識(shí)別、非線性聲納工程應(yīng)用等關(guān)鍵技術(shù)。入選國(guó)家新世紀(jì)百千萬(wàn)人才工程、國(guó)防科技工業(yè)511人才工程、國(guó)防科技工業(yè)有突出貢獻(xiàn)中青年專家、上海市領(lǐng)軍人才。

圖書目錄

第1 章聲場(chǎng)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(dòng)方程············································································································· 4
1.4.5 波動(dòng)方程············································································································· 4
1.4.6 速度勢(shì)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(dòng)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(chǎng)······························································································ 12
1.5.4 液態(tài)海底均勻淺海聲場(chǎng)······················································································· 14
1.6 聲場(chǎng)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·························