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1、西北工業(yè)大學(xué)博士學(xué)位論文運(yùn)動(dòng)目標(biāo)輻射噪聲的寬帶波束形成研究姓名:唐建生申請(qǐng)學(xué)位級(jí)別:博士專業(yè):水聲工程指導(dǎo)教師:孫超20061001摘要加線性約束的設(shè)計(jì)方法和施加虛擬干擾源的設(shè)計(jì)方法。仿真實(shí)驗(yàn)表明:此方法能夠穩(wěn)健地實(shí)現(xiàn)信號(hào)阻塞,具有較強(qiáng)的干擾抑制能力,并能夠?qū)崟r(shí)地給出目標(biāo)輻射噪聲的時(shí)間波形。6.把語音信號(hào)處理中的嵌套陣列波束形成方法與多采樣率信號(hào)處理技術(shù)相結(jié)合,提出了嵌套陣列的多采樣率波束形成方法。在實(shí)現(xiàn)中,把子陣設(shè)計(jì)和變采樣率相結(jié)合,使不同子陣的波束形成器使用同一組濾波器系數(shù)而能得到相同的空間濾波特性,以簡化設(shè)計(jì)和降低信號(hào)處理的
2、復(fù)雜程度。給出了嵌套陣列的設(shè)計(jì)方法和實(shí)現(xiàn)方法。結(jié)合設(shè)計(jì)實(shí)例,利用仿真實(shí)驗(yàn)驗(yàn)證了此方法的正確性和有效性。7.利用水池和湖上實(shí)驗(yàn)數(shù)據(jù),對(duì)本文所提方法在實(shí)際環(huán)境中的性能進(jìn)行了檢驗(yàn)。實(shí)驗(yàn)結(jié)果表明:利用低旁瓣的wcBB和基于FIB的廣義旁瓣對(duì)消器均能夠?qū)崿F(xiàn)對(duì)寬帶目標(biāo)輻射噪聲的無失真獲取。關(guān)鍵詞:寬帶恒定束寬波束形成。無失真,運(yùn)動(dòng)目標(biāo),輻射噪聲,低旁瓣,穩(wěn)健的波束形成,優(yōu)化設(shè)計(jì),自適應(yīng)波束形成,實(shí)驗(yàn)驗(yàn)證兩北工業(yè)大學(xué)博士學(xué)位論文AbstractMoVingtargetS’radiatednoisesoRencoverawidebandwidth
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