本文選題：海面目標(biāo) + 深海聲場(chǎng)影區(qū)　； 參考：《海洋學(xué)報(bào)》2017年01期

【摘要】：基于射線理論分析了在深海情況下海面聲源產(chǎn)生聲場(chǎng)的頻率-距離干涉結(jié)構(gòu),給出了影區(qū)內(nèi)聲場(chǎng)頻率-距離干涉結(jié)構(gòu)的近似理論表達(dá)式,分析得到影區(qū)內(nèi)聲場(chǎng)頻域干涉周期隨收發(fā)距離的增加而增大、隨著接收水聽器深度的增加而減小。因此由單水聽器記錄的聲場(chǎng)干涉結(jié)構(gòu)即可實(shí)現(xiàn)被動(dòng)聲源距離估計(jì)。在南海深海實(shí)驗(yàn)中觀測(cè)到海面寬帶噪聲源在聲場(chǎng)影區(qū)形成的聲場(chǎng)干涉結(jié)構(gòu),對(duì)實(shí)驗(yàn)獲得聲場(chǎng)干涉結(jié)構(gòu)的處理結(jié)果驗(yàn)證了深海聲場(chǎng)影區(qū)干涉結(jié)構(gòu)用于被動(dòng)聲源距離估計(jì)的有效性。與傳統(tǒng)的匹配場(chǎng)被動(dòng)定位方法相比,該方法不需要已知海底聲學(xué)參數(shù)和大規(guī)模的拷貝場(chǎng)計(jì)算。
[Abstract]:Based on the ray theory, the frequency-distance interference structure of the acoustic field produced by the acoustic source in the deep sea is analyzed, and the approximate theoretical expression of the frequency-distance interference structure of the acoustic field in the shadow region is given. The results show that the frequency domain interference period increases with the increase of the distance between the receiver and the receiver, and decreases with the depth of the receiving hydrophone. Therefore, the passive acoustic source distance estimation can be realized by the acoustic field interference structure recorded by a single hydrophone. In the deep sea experiment of the South China Sea, the acoustic field interference structure formed by the wide-band noise source in the sound field shadow region is observed. The experimental results of the acoustic field interference structure obtained from the experiment verify the effectiveness of the deep sea acoustic field shadow region interference structure in the passive sound source distance estimation. Compared with the traditional matching field passive localization method, this method does not need to know the seabed acoustic parameters and large-scale copy field calculation.
【作者單位】： 國(guó)家海洋局第三海洋研究所海洋聲學(xué)與遙感實(shí)驗(yàn)室;
【基金】：國(guó)家海洋局第三海洋研究所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金(海三科2016016) 國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC1400103) 國(guó)家自然科學(xué)基金(61601132,41606116) 福建省自然科學(xué)基金(2016J01019)
【分類號(hào)】：P733.23;TB565

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1 馮艷華;海面目標(biāo)紅外輻射特性研究[D];西安電子科技大學(xué);2009年

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本文編號(hào)：1896450