本文選題：矢量陣 + 近場(chǎng)　； 參考：《艦船科學(xué)技術(shù)》2016年05期

【摘要】：矢量傳感器可以同步共點(diǎn)地獲取聲場(chǎng)的標(biāo)量和矢量信息,具有較好的指向性、緊湊的結(jié)構(gòu)及抑制各向同性噪聲干擾等優(yōu)點(diǎn),同時(shí)應(yīng)用多個(gè)矢量傳感器組成矢量陣可以獲得更高的測(cè)量增益,為低信噪比條件下艦船輻射噪聲量級(jí)的準(zhǔn)確評(píng)價(jià)提供一種有效手段。本文建立矢量陣近場(chǎng)信號(hào)模型,給出基于單個(gè)矢量傳感器輸出量處理和基于陣列同類輸出分量相乘處理的波束形成方法,并針對(duì)恒定束寬波束形成問(wèn)題,提出一種基于Kaiser窗的近場(chǎng)恒定束寬波束形成方法,利用Kaiser窗的特點(diǎn),通過(guò)設(shè)定窗函數(shù)的步長(zhǎng)隨指數(shù)變化,使設(shè)計(jì)波束響應(yīng)逐漸趨于理想波束響應(yīng),提高了恒定束寬波束形成器的設(shè)計(jì)精度,最后通過(guò)仿真試驗(yàn)驗(yàn)證上述算法的性能。
[Abstract]:The vector sensor can synchronously obtain scalar and vector information of sound field, which has the advantages of good directivity, compact structure and suppression of isotropic noise interference.At the same time, using multiple vector sensors to form vector matrix can obtain higher measurement gain, which provides an effective method for accurate evaluation of ship radiation noise magnitude under low signal-to-noise ratio (SNR).In this paper, the near field signal model of vector array is established, and the beamforming method based on single vector sensor output processing and array similar output component multiplication processing is presented, and aiming at the problem of constant beamwidth beamforming,A near-field constant beamwidth beamforming method based on Kaiser window is proposed. By using the characteristics of Kaiser window, the design beam-response becomes more and more ideal by setting the step size of window function with exponential variation.The design accuracy of the constant beamwidth beamformer is improved. Finally, the performance of the algorithm is verified by simulation.
【作者單位】： 大連測(cè)控技術(shù)研究所;
【分類號(hào)】：U674.70;TP212

【相似文獻(xiàn)】

相關(guān)期刊論文 前2條

1 ;適合空間應(yīng)用的激光雷達(dá)[J];激光與光電子學(xué)進(jìn)展;1971年02期

2 ;[J];;年期

，

本文編號(hào)：1764046