本文選題：實時三維聲學(xué)成像 + 多頻發(fā)射　； 參考：《華南理工大學(xué)學(xué)報(自然科學(xué)版)》2016年01期

【摘要】：針對平面接收陣陣元數(shù)量龐大導(dǎo)致的水下三維聲學(xué)成像系統(tǒng)硬件開銷和計算量過大的問題,提出了一種基于十字型陣列的三維聲學(xué)成像的多頻發(fā)射波束形成算法.該算法將發(fā)射波束方向劃分為多個扇面,在每個扇面內(nèi)依次向各波束方向發(fā)射不同頻率的扇形波束信號,將發(fā)射次數(shù)從波束數(shù)減少到扇面數(shù),從而縮短了掃描時間.仿真實驗和計算量分析表明,文中算法能夠獲得與平面接收陣直接波束形成算法相同的波束性能,并且大幅降低了陣元數(shù)量和計算量.實際水下試驗證明了該算法能夠滿足水下三維聲學(xué)成像的實時性需求.
[Abstract]:A multi-frequency beamforming algorithm for 3D acoustic imaging based on cross array is proposed to solve the problem that the hardware overhead and computation of underwater 3D acoustic imaging system is too large due to the large number of received array elements. In this algorithm, the transmitting beam direction is divided into several sectors, and the sector beam signals with different frequencies are transmitted to each sector in turn. The number of transmit beams is reduced from the number of beams to the number of sectors, thus the scanning time is shortened. Simulation experiments and computational analysis show that the proposed algorithm can achieve the same beamforming performance as the planar direct beamforming algorithm, and greatly reduces the number of elements and the amount of computation. Actual underwater experiments show that the algorithm can meet the real-time requirement of underwater three-dimensional acoustic imaging.
【作者單位】： 浙江大學(xué)數(shù)字技術(shù)及儀器研究所∥浙江省網(wǎng)絡(luò)多媒體技術(shù)研究重點實驗室;
【基金】：國家自然科學(xué)基金面上項目(41276090) 國家“863”計劃項目(2014AA091301) 浙江大學(xué)中央高�；究蒲袠I(yè)務(wù)費專項資金資助項目~~
【分類號】：TB565

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 蔣飚;朱W，

本文編號：2019379