为实际声目标被动定位提供理论指导。
It offers a theory instruction of real passive acoustic location.
本论文的核心就是研究不同地声目标识别方法。
The core problem of this thesis is to study the different acoustic signal identification methods.
提出了一种基于灰关联分析的声目标识别算法。
A recognition method based on gray correlation analysis algorithm is proposed through extracting LPC, characteristic from tank, helicopter and car acoustic.
提出了一种可用于战场声目标定向的鲁棒自适应时延估计算法。
Robust time delay estimation algorithm for acoustic target on battlefield was proposed.
提出一种隐马尔可夫模型和K -均值聚类混合模型的声目标识别方法。
A recognition method based on HMM and K-means cluster is proposed through extracting LPC characteristic from acoustic target.
本文的另一部分研究了声目标的定位技术，分为平面目标定位和空中目标定位两种。
The other part of the thesis discusses the target location problem which includes targets on the ground and in the sky.
本文研究了借助于系统地调控结构声传播性态以达到降低工程结构噪声目标的方法。
The paper discusses noise reduction in technical structures by means of systematically manipulating structure borne sound propagation.
利用声目标在运动过程中产生的声波，对目标进行识别是被动声探测系统的基本任务。
Target identification using moving target's acoustic wave is a basic task of the acoustic detection system.
文章对目前常采用的定位方法进行了分析，提出了用双直角三角形阵对声目标进行定位。
The paper analyzes various methods of target location, and presents a method of acoustic target location with a dual righttriangle array.
文中首先研究了声目标定向技术，通过对比，确立了平面四元十字阵作为定向的核心阵形。
After comparison, cross-array, with four sensors symmetrically located in the same plane, has been regarded as the central array for target direction.
鉴于声目标识别在民用和军用方面的广泛应用，对声目标进行识别已成为模式识别领域中的研究热点之一。
Due to the wide application of acoustic target recognition in civil and military aspects, it has been a hotspot of study for pattern recognition.
在对直升机声信号特征进行分析之后，提出了一种基于谐波恢复的ESPRIT方法来提取直升机声信号谐波频率作为特征用以识别直升机声目标。
Based on analysis of spectral characteristic of helicopter acoustic signal, a method of extracting harmonic frequencies from the helicopter acoustic signal via ESPRIT is proposed.
本文应用一致性时域有限差分法（FDTD）和近场远场变换计算散射声目标的反射声压强度，找出反射声压级与目标声中心到换能器间距离的关系。
Using the finite difference time-domain (FDTD) method and near field to far field transformation, pressure of the reflected sound from the scattering target is calculated.
导出了水中透声目标表面边界条件的时域有限差分(FDTD)表达形式，将FDTD在水声学中的应用范围扩大到无切应力的有限声阻抗目标的散射问题。
The proposed finite difference boundary condition expands the scope of application of FDTD to scattering problems of objects with a finite acoustic impedance but without tangential stress.
而每当他发出“嘘”声使她安静下来时(“在搜索目标时一定保持安静——避免在你发现他们前就被人找到”)，她都会马上“嘘”回一声，这是告诉他自己正留着神呢。
And when he shushed her (" Always be silent when searching out your target - lest they find you before you find them "), she would shush him right back, which told him she was paying attention.
随着第一个敲击声的落下，随着鼓声在舞台后方鸣鸣作响，我知道，我达成了童年时想成为“乐队指挥”的目标，哪怕只是一小会，哪怕只是指挥一首小乐曲。
And with the first down beat, the drums roaring at the rear of the stage, I knew I'd reached that childhood goal of being "the leader of the band," if only for a moment, if only for a single piece.
从学徒到大师，一路上理所当然的反对声也有了回报，因为这就是终极目标：对生命会走向何方进行有效的控制。
And that, for all the brouhaha which rightly accompanies the passage from journeyman to master, is the ultimate point: practical control over what life can be made to do.
然而，为了让iMic具有适度的性能，我们在本系列文章中的目标是处理两个并行的(立体声)44.1kHz的16位数据流，这就意味着要实现22.05 kHz的音频带宽。
However, in line with the modest capabilities of the iMic, our target for this series is to work with two parallel (stereo) 44.1khz 16-bit data streams, implying an audio bandwidth of 22.05khz.
青年只要朝着大目标前进，时代巨轮就会转动！青年只要嘶声伸张正义，历史就会改变！
Youth as long as working towards a big goal, era ship will turn! Youth just screams justice, history will change!
英国公学是英国教育体系中最具特色的部分，它以其悠久的历史、优越的社会地位和独特的培养目标而声蜚世界。
Public school is distinctive in English secondary school education and well known for its age-old history, outstanding social status and unique goal.
研究了基于时延估计的低空目标声测无源定位理论与算法。
The theory and algorithm for low altitude target localization based on time delay estimation (TDE) is studied.
研制宽频带水下目标模拟器对于开展水下对抗技术的研究和验证水下声系统的性能具有十分重要的意义。
The study of the underwater wideband target emulator plays a very important role in improving the underwater acoustic system technology and verifying the performance of the underwater acoustic system.
研究了用地面声阵列传感器进行低空飞行目标跟踪问题。
The problem of using sound array sensors to track low altitude flying target is studied.
给出了水中有限长弹性目标声散射问题的求解方法。
A method is presented for studying bistatic scattering of acoustic waves by finite elastic target.
目前被动声探测距离精度还不能满足跟踪的需要，因此，反直升机智能雷对目标的跟踪问题归结为仅有角测量的跟踪问题。
Tracking target by using anti-helicopter mine (AHM) is actually the bearing-only measurement because precision of range detected by passive acoustic measurement cant satisfy the need of tracking.
从战场实际情况出发，建立了人工神经网络目标声定向系统模型。
This paper sets up the model of artificial neural network for acoustic direction finding systems of targets used in the battle field.
水下目标声散射特性研究是主动声纳赖以工作的基础，也是主动探测产生新思想、新原理、新方法的基础。
The study on the characteristics of scattering from an underwater target is only the base that the active sonar works on but also the source which new ideas, new theories and new methods come from.
摘要：为了解决水下远程目标被动探测问题，提出了一种声矢量圆阵的信源数检测方法。
Abstract: to solve the passive detection problems of underwater remote targets, we propose a method for detecting source Numbers with a uniform circular acoustic vector sensor array.
本文介绍水下高速运动目标近程引爆的主动声引信的设计研究。
This paper introduces the study and implementation of an active acoustic fuze for an underwater high speed moving target.
为了建立浅海中的目标声散射模型，本文利用几何图形建模软件对潜艇等具有复杂几何外形的目标进行精确建模。
In order to model the acoustic target scattering in the shallow water, first, the target with any kind of shape, such as a submarine, is modeled by geometric drawing software.
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