查询词典 torpedo

Torpedo ; underwater acoustic imaging ; complex array ; azimuth resolution

鱼雷； 水下声成像；复合阵；方位分辨率

Double targets ; acoustic homing torpedo ; salvo ; feasibility

双目标；声自导鱼雷；连续射击；可行性

In order to reduce calculation in the process of vertical scale identification of torpedo acoustic image,we present an improved decoherent multiple signal classification method based on quadrature complex sampling which suits to estimating the vertical highlights of submarine with the characteristics of near distance and coherent signals .

在鱼雷声成像垂直尺度识别中，根据潜艇垂直方向上目标亮点相距较近，且为相干信号源的特点，同时为了减小运算量而易于工程实现，提出了一种基于正交采样的高分辨DOA估计算法，即正交解相干MUSIC算法。

Therefore,the application of space-time adaptive optimization method to active acoustic homing torpedo is studied, and the conventional method is improved by restraining the side lobe reverbereration and main lobe reverberation with self Doppler null method.

在此基础上研究了空时最优处理方法在主动声自导鱼雷中的应用，通过压低旁瓣减少旁瓣区混响和自身多普勒零陷抑制主瓣混响等措施对传统方法进行了改进。

HLA ; torpedo acoustic homing system ; simulation platform ; FOM/SOM

高层体系结构；鱼雷声自导系统；仿真平台；联邦对象模型/仿真对象模型

This method is based on the Snell law of acoustic propagation in water. Different velocity gradients among linear layers in water are utilized to draw the sound ray chart, and a mathematical model of the geometric operational range is built. Furthermore, the geometric homing range is predicted with sound ray density, a prediction system of geometric operational range for acoustic homing torpedo is designed and the function of the system is realized through a system software. The sea trial demonstrates the prediction validity of the system.

该方法基于声波在水中传播的Snell定律，利用水中各线性分层间不同的声速梯度，绘制声线图，建立了几何自导作用距离的数学模型，并通过声线密度对几何作用距离进行预报，设计了声自导鱼雷几何作用距离预报系统，并通过系统软件实现了其功能，经测试，该系统在海上试验中取得了良好效果。

For the active acoustic fuze for a torpedo on the basis of the distance measurement done by using acoustic pulses, the echo of a randomly undulating wave is a main disturbance to recognize a surface ship.

摘 要：基于脉冲回声探测的主动声引信识别水面舰船，随机起伏的波浪回声干扰是限制其可识别水面舰船最小吃水的主要因素。

Torpedo ; acoustic image ; scale identification ; target highlights ; direction of arrival estimation ; decoherent multiple signal classification method

鱼雷； 声成像；尺度识别；目标亮点； DOA估计；解相干MUSIC算法

Wake acoustic homing torpedo ; trajectory optimization ; endurance loss ; hit probability ; counter-countermeasure

尾流自导鱼雷；弹道优化；航程损失；命中概率；反对抗

The results show that the simulation system is reasonable, reliable and of high precision, and the shallow water control scheme for the aerial torpedo can completely ...

结果表明，该仿真系统结构合理，精度高，可靠性好，所采用的浅水控制方案可使空投鱼雷满足近海防御的使用要求，达到了预期的目的

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。