acoustic target 中文意思是什麼
acoustic target
解釋
音響目標-
Based on the analysis and study of the primary principle and countermeasure process of the underwater acoustic countermeasure equipments, the mathematical models of the typical underwater acoustic countermeasure equipments such as the wide - band noise jammer target radiation noise simulator echo simulator and the gas bubble are presented
在詳細分析、研究水聲對抗器材有關基本概念、基本工作原理及對抗過程的基礎上，歸納、總結了噪聲干擾器、目標輻射噪聲模擬器、主動回波模擬器及氣幕彈等當前典型水聲對抗器材的數學模型。 -
The feature parameter extraction methods of the underwater target are studied which can improve the performance of the underwater acoustic countermeasure equipments. several feature extraction methods such as the scale invariance feature extraction, target pole extraction fourier - mellin transform etc are investigated by computer simulations. the experimental results demonstrated the efficiency of these feature extraction methods in the applications of underwater target recognition
對多種特徵提取方法如目標相對不變尺度特徵提取、目標極點特徵提取、目標信號的傅里葉?梅林變換特徵提取等進行了模擬研究，結果表明了這些特徵參數提取方法的有效性，具有良好的應用前景。 -
This paper mainly discusses the vital part discrimination of the near - field target by using target acoustic imaging method, which uses dense narrow beams based on high frequency system
本論文主要研究了基於高頻體制下利用密集窄波束形成目標圖像，進行近場目標精確識別。 -
The acoustic pressure information and particle velocity information are used to study the direction of the arrival estimation by analyzing strong linear spectrum of the single target basing on cross spectrum method
摘要利用矢量水聽器收集到的聲壓和振速信息，研究基於互譜法分析單目標的強線譜來進行目標方位估計。 -
It is well known that array processing technique is a main branch of underwater acoustic signal processing and multi - target parameter estimation
陣列處理是水下聲信號處理的重要組成部分，是進行水下目標參數估計的重要環節。 -
The dissertation is devoted to the study on the characteristics of underwater acoustic channels for mine. based on the comprehensive analysis on the characteristics of underwater acoustic channels, the research on the parameters of target sea area, the acoustic model, the characteristics of underwater acoustic transmission and the parameters of capability of long - range remote control receiving system is systematically conducted through theoretical analysis, computer simulation and testing of circuit
本文對遠程遙控水雷系統將要應用的水聲通道的傳播特性進行了分析，在對遠程水聲通道特性進行全面分析的基礎上，通過理論分析、計算機模擬、硬體電路的實驗等對目標海域通道的水文參數、聲場分析所用的聲場模型、聲傳播特性和遙控接收系統性能指標進行了系統、深入的研究。 -
Baesd on the theory that moving target detectability can be enhanced by joint space - time processing with the application of frequency features and targets " characteristics, we focus our attention on particularies of sonars " target detection using underwater acoustic techniques and vehicle detection using computer vision techniques
本文注重在理論指導下的特殊性研究，即在聯合利用時間信息、空間信息、頻率信息以及目標特徵能夠提高運動目標檢測能力的思想指導下，分別研究了聲納的運動目標檢測和基於計算機視覺的交通車輛檢測。 -
The applications include underwater acoustic channel estimation, de - convolution, target tracking and inverse problems of underwater sound field. it is shown that sa and ga have the capability of solving the specific problems
對這些技術和方法的深入研究，有可能為水聲工程領域提供新的技術手段，找得新的發展方向。 -
Our final target is to measure and research the acoustic current which is produced by that saw carry the electron passing through the quasi - 1d electron channel at the cut off voltage of the quasi - 1d electron channel, so as to research the quantum acoustic current steps of the quasi - 1d electron channel
最終目標是在準一維電子通道的鉗斷點測量和研究聲表面聲波搬運電子通過準一維電子通道的聲電電流，從而對準一維電子通道的聲電流量子化臺階現象進行研究。 -
Active underwater acoustic positioning / tracking systems locate target by measuring the range from object to receiving sensors. usually the target - receiver range can be got by the propagating time of a signal pulse. if this propagating time is larger than the pulse repetition period, it will mean that more than one signal pulse are on propagation
主動水聲跟蹤定位系統通過測量脈沖信號的傳播時延可以測得目標相對接收機的距離，當此傳播時延大於系統同步周期時，時延測量就會呈現不確定性，可能相差若干個重復周期，導致定位解多值，稱之距離模糊現象。 -
Research for bistatic scattering of acoustic waves by finite elastic target
非入射方向有限長彈性柱聲散射特性研究 -
The acoustic 3d imaging sonar can obtain the 3d slice images by the receiving sound signals. so the underwater intelligent robot can identify and classify the detected target. in this paper, the hardware system of the underwater receiving unit of the acoustic 3d imaging sonar is researched and implemented
水下三維聲成像聲納通過獲取水下目標的三維聲信息，並在此基礎上提取出目標的三維切片聲圖像，實現對探測目標的三維識別和分類，從而完成聲視覺的任務。 -
Research on the feature extraction based on the acoustic property of target is the main method to the target classification
利用目標聲振動信號進行特徵提取是目標識別的有效手段。 -
In this paper, we describe the study background, meaning and methods of passive acoustic detective network, summarize the basic theories and methods of target tracking and data association, analyze some tipical data association algorithms include the nearest neighbor algorithm ( nn ), probabilistic data association filtering ( pdaf ), joint probabilistic data association filtering ( jpdaf ), multiple hypothesis tracking ( mht ), and multidimensional s - d assignment algorithm. 2. in detective network, sometimes a surveillance region have only single sensor
從整體上描述了無源聲音探測網路的研究背景、意義、基本框架和研究方法，概述了目標跟蹤與數據關聯的基本理論與方法，重點分析了幾種典型的數據關聯方法，包括最近鄰方法、概率數據關聯濾波器（ pdaf ） 、聯合概率數據關聯濾波器（ jpdaf ） 、多假設跟蹤（ mht ）以及多維s - d分配演算法。
分享友人