水下高速目標(biāo)聲譜圖特征提取及分類(lèi)設(shè)計(jì)

王森; 王余; 王易川; 李海濤

doi:10.11999/JEIT170283

水下高速目標(biāo)聲譜圖特征提取及分類(lèi)設(shè)計(jì)

doi: 10.11999/JEIT170283

1.
(海軍潛艇學(xué)院青島 266000) ②(中國(guó)人民解放軍31001部隊(duì) 北京 100094)

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出版歷程
- 收稿日期: 2017-04-01
- 修回日期: 2017-08-25
- 刊出日期: 2017-11-19

Feature Extraction and Classification of Spectrum of Radiated Noise of Underwater High Speed Vehicle

1.
(Navy Submarine Academy, Qingdao 266000, China)
2.
(PLA 31001, Beijing 100094, China)

摘要

摘要: 為了增加水下高速目標(biāo)的識(shí)別特征維度，優(yōu)化識(shí)別效果，該文設(shè)計(jì)了一種基于目標(biāo)輻射噪聲高速特征量(High Speed Characteristic Quantity, HSCQ)的分類(lèi)方法。首先，針對(duì)水下高速目標(biāo)輻射噪聲的DEMON(Detection of Envelope Modulation On Noise)譜特征進(jìn)行分析，根據(jù)DEMON譜的頻率可分性，定義了DEMON譜調(diào)制分布比(Modulation Distribution Ratio, MDR)。然后，根據(jù)水下高速目標(biāo)輻射噪聲的功率譜歷程圖直紋特征，應(yīng)用圖像邊緣檢測(cè)、線譜生長(zhǎng)等理論進(jìn)行特征提取，并分析了功率譜歷程圖的直紋特征量(Straight-line Characteristic Quantity of Spectrum, SCQS)。最后，根據(jù)2種特征量的實(shí)測(cè)信號(hào)分析結(jié)果，定義了目標(biāo)輻射噪聲的HSCQ，實(shí)現(xiàn)了一種新的水下高速目標(biāo)分類(lèi)方法。實(shí)測(cè)信號(hào)分析結(jié)果顯示，采用MDR或SCQS進(jìn)行單特征量分類(lèi)，非高速目標(biāo)的誤報(bào)率分別為21.4%和16.3%；采用HSCQ進(jìn)行分類(lèi)，非高速目標(biāo)的誤報(bào)率僅為4.1%。
- 水下高速目標(biāo) /
- 聲譜圖 /
- 調(diào)制分布比 /
- 直紋特征量
Abstract: In order to improve the result of underwater high speed vehicle classification, a classification method that is based on High Speed Characteristic Quantity (HSCQ) of vehicle radiated noise is designed. Firstly, analysis of Detection of Envelope Modulation On Noise (DEMON) spectrum of actual measured radiated noise is finished. The Modulation Distribution Ratio (MDR) of radiated noise is defined based on the separability of modulation frequency of DEMON spectrum. Then the spectrograms feature analysis and feature extraction of underwater high speed radiated noise are done based on image edge detection and edge growing. The Straight-line Characteristic Quantity of Spectrum (SCQS) of vehicle radiated noise is analyzed. Finally, considering the analysis results of two types of characteristic quantity, a new classification method of underwater high speed vehicle is realized and HSCQ of vehicle radiated noise is designed. The actual measured radiated noise analysis shows that, the false alarm rate of non-high speed vehicle is respectively 21.4% (only using MDR), 16.3% (only using SCQS), and 4.1% (using HSCQ).
- Underwater high speed vehicle /
- Spectrum of radiated noise /
- Modulation Distribution Ratio (MDR) /
- Straight-line Characteristic Quantity (SCQ)

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