日韩自偷自拍亚洲日韩,强奷漂亮人妻系列老师

內(nèi)容簡介

　　陣列信號處理是現(xiàn)代聲納設(shè)備的核心功能之一。通過接收陣列的信號處理，可以獲取空間指向性增益，提高空間分辨和干擾抑制能力，實現(xiàn)對目標(biāo)的檢測與跟蹤、方位與距離估計；通過發(fā)射陣列的信號處理，可以獲取具有一定時延差或相位差的陣元信號，從而形成指向性發(fā)射波束，提高聲源級；通過空-時自適應(yīng)處理，可以提高對弱目標(biāo)的檢測能力。近年來，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、時反處理、矢量信號處理、魯棒性波束形成、?；盘柼幚淼刃滦吞幚硭惴?，這些都是聲納陣列信號處理的發(fā)展與豐富。本書深入、系統(tǒng)地介紹了可應(yīng)用于實際聲納設(shè)備的陣列信號處理技術(shù)，在簡單的原理接收基礎(chǔ)上又大量的計算機(jī)模擬仿真及湖、海試實際數(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處理領(lǐng)域的新技術(shù)介紹。

作者簡介

　　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。現(xiàn)擔(dān)任中國船舶重工集團(tuán)公司第七二六研究所副所長、水聲對抗技術(shù)重點實驗室副主任、水聲對抗技術(shù)重點實驗室學(xué)術(shù)委員會副主任委員、水聲對抗國防科技創(chuàng)新團(tuán)隊帶頭人、上海市聲學(xué)學(xué)會理事、《聲學(xué)學(xué)報》《聲學(xué)技術(shù)》《艦船科學(xué)技術(shù)》編委會委員。從事水聲及水聲對抗技術(shù)研究工作20余年，主持研制了艦用魚雷報警聲納、艦水聲對抗系統(tǒng)、港口近程水下警戒探測系統(tǒng)等裝備，均填補(bǔ)*內(nèi)空白，獲國防科技進(jìn)步一等獎2項、二等獎2項、三等獎2項。在國內(nèi)首次解決了拖線陣左右舷分辨、高速運(yùn)動目標(biāo)自適應(yīng)檢測與識別、非線性聲納工程應(yīng)用等關(guān)鍵技術(shù)。入選國家新世紀(jì)百千萬人才工程、國防科技工業(yè)511人才工程、國防科技工業(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·························