使用雷达探测水下目标是没有用的。
最后研究了水下目标的分类识别问题。
Finally the target classification and identification are studied.
为水下目标探测和识别提供了新的理论和方法。
This may provide a novel theoretical means in detecting and recognizing underwater targets.
研究了一种基于MTI技术的水下目标检测方法。
An underwater target detection method is studied based on the MTI technique.
声纳是对水下目标进行定位、导航和通讯的主要手段。
Sonar is the manly artifice of positioning, navigation and communication for the underwater target.
在水下目标跟踪中，无源被动定位技术是常用的技术。
Passive localization algorithm is often used in the underwater target tracking.
水下光电成像设备用于水下目标运动分析及实况监测。
The photoelectricity imaging equipment underwater is used to analyze the object motion and supervise the actually situation underwater.
在现代被动声纳系统中，水下目标的自动识别是关键技术之一。
Automatic recognition of underwater targets is one of the key techniques in modern passive sonar systems.
这是由于水下目标辐射信号和海洋环境的复杂性、多变性造成的。
This is caused by the complexity of underwater target radiated noise and the variety condition of the sea.
分析了不同定位方法确定水下目标位置的差异，并进行了精度估计。
It discusses the difference in underwater target positioning with different positioning methods and makes an estimate of the accuracy.
线性调频信号可能将成为水下目标强度宽带测试的一种主要信号形式。
LFM signal will likely become the main signal form in underwater target strength broadband test.
本文讨论如何使用目标运动分析方法对水下目标进行纯方位距离估计。
The paper discusses how to apply methods of target motion analysis on bearings-only estimation of underwater target motion parameters.
随着低噪声安静型潜艇的出现，传统的水下目标探测手段面临着挑战。
Along with the appearance of the low noise peaceful submarine, the traditional undersea detection methods face the new challenge.
通过声压与振速的联合信号处理，充分利用水下目标辐射噪声场的信息。
Through processing sound pressure combine with particle velocity, the information of underwater target radiation noise field is entirely used.
水下目标识别技术是现代声纳系统与水声对抗的一个极为重要的组成部分。
Underwater target identification technology is a very important part of modern sonar system and underwater acoustic antagonizing.
这一结果对于进一步开展水下目标信号的识别、分类研究具有重要参考价值。
The research results will be helpful in the further study of underwater acoustic signals.
结合各种声纳的探测特性和水下目标的特点，建立了舰艇编队的数据融合方案。
Considering the measurement properties of different sonar and the underwater targets characteristics, the data fusion method of naval fleet is proposed.
针对水下目标高频近场散射特性，提出了一种求解水下复杂目标散射声场的方法。
A method to solve the scattering acoustic field of complex target was proposed for the near-field scattering characteristics of an underwater target in high-frequency.
利用匹配场处理器技术对水下目标进行被动定位是国际水声界关注的热点问题之一。
The question of passive localization of the underwater sources using matched-field processing is one of the hot topics in the field of underwater acoustical signal processing.
可用作水下目标声特征逼真模拟器(声靶)，也可作其它低频宽带大功率声源使用。
It can be used as a high-performance underwater acoustic target simulator, or as a low frequency broadband high power underwater acoustic source.
本文研究了利用小波变换提取水下目标瞬态回波的边缘特征并进行目标分类的可行性。
The feasibilities of using wavelet transform to extract the edges of the echoes and then classify the targets based on the edge features have been studied in this paper.
为了接收水下目标反射回波，研究并设计了一种高精度、大动态范围的通用水声接收机。
In order to receive the echo of the underwater target, a method to design a kind of high precision, wide dynamic range, general receiver is presented in this paper.
针对双基地声纳水下目标定位问题，讨论了二维目标定位的六种基本方法以及优化方法。
Aiming at the problem of underwater object location in bistatic sonar, the paper discussed six basic location methods and an optimized method of two-dimensional.
研究结果表明，在较恶劣环境条件下，利用星载激光系统可以实现对水下目标的良好通信。
The results show that under severe environment robust laser communication from a satellite to a submerged platform can be achieved.
多基地声呐由于其收发设备分置，因而在水下目标的检测和定位方面，具有很多独特的优点。
Because of the separable resource and receiver, Multistatic sonar have many special character in underwater target detect and localization.
本系统由四个等深度的声纳浮标组成，可以以被动方式探测水下目标，并对目标进行定位。
The passive location system consisting of four buoys with the same depth can detect the targets passively and get the locations of the targets.
研究利用矢量水听器测量水下目标低频辐射噪声的问题，并给出了测量方法和海上试验结果。
Studies the measurement of low frequency radiation noise from an underwater target by a vector hydrophone, discusses the method of measurement and presents the test results in the sea.
该测量方法在激光水下成像、水下目标探测以及对潜激光通信都将具有重要的推广应用价值。
This means of measurement will be widely used in the fields such as laser underwater imaging, underwater target detection and laser submarine communication.
水下激光探测技术在水下目标搜索、海洋地质勘探、目标识别等领域都具有重要的应用价值。
The technology of underwater laser detection has very important practical value at many fields such as detection of underwater target, ocean geological reconnaissance and target recognition.
并根据一定的通信系统参量，利用蒙特卡罗方法模拟了水下目标接收信号的时间和空间分布。
With certain communication system parameters the temporal and spatial distributions of the received signal from submerged platform are simulated using Monte Carlo method.
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