查询词典 antenna array

First of all, this paper introduces the whole design project and interrelated knowledge about Non-destructive detection, ultrasonic detection, and Phased-Array ultrasonic detection Then the paper depicts the principle of Phased-Array focus and abstracts a set of math model and feasible arithmetic on the base of the real parameter of the system. Put forward several problems that exist during the course of system development and program. Introduce some measures of distinguish that are often used in non-destructive detecting and echo wave crest. Then I depict one of the measures in detail that used in the course of non-destructive detection, which is the way of distinguishing whether defects exist or not. Then provide part core program to realize it. This paper also provides main flow chart through analyzing how main control program controls different parts to make the whole system more effective.

然后在文中以较大的篇幅，描述了相控阵聚焦的原理，并根据该系统的实际参数，抽象出一套数学模型和可行的算法，在此基础上提出了在系统开发过程及编程实现过程中存在的一些问题；介绍了在无损检测中缺陷的分类和对回波峰常用的识别方法，详述了系统开发过程中使用的其中一种识别方法，即判别是否存在缺陷的算法，并给出实现之的部分核心程序；详述主控程序如何控制各部分并协调各相关软件的工作，使整个系统发挥最高效能，并给出主要设计框图和程序。

With improvment of infrared focal plane array sensors, now, IRST utilize line focal plane array sensors to achieve higher sensitivity and resolution.

目前红外搜索跟踪系统普遍采用红外焦平面传感器，线阵FPA使系统达到了更高的灵敏度和分辨率。

With coupler embedded and acceleration sensitivity compensation design, the structure symmetry is insured, which can induce the acceleration sensitivity effectively. The acceleration sensitivity compensation design also improves the production efficiency of FOH for towed linear array application.2. A good theoretical simulation platform, utilizing the method of elastic mechanics and the finite element method, is established, which can provide an effect predictive design for FOH. The experimental results are in good agreement with the theoretical analysises.3. Some key technology problems in the making of FOH for towed linear array application are conquered. The new developed FOH, with an acoustic sensitivity of -143.0dB, has acceleration sensitivity less than -30dB, which exceeded to results from other international reports.

本论文的主要成果和创新在于：1、提出了耦合器内嵌、带加速度灵敏度微调补偿的低加速度灵敏度光纤水听器结构，最大程度保证了工艺结构的对称性，实现了对工艺误差的有效补偿，提高了低加速度灵敏度光纤水听器研制的成品率。2、采用弹性力学和有限元方法建立了拖曳线列阵光纤水听器理论设计平台，实验与理论分析结果相一致，这为优化光纤水听器的结构设计提供了有效的技术手段。3、解决了拖曳线列阵用光纤水听器制造的关键技术问题，研制出声压灵敏度为-143.0dB，加速度灵敏度低于-30dB的拖曳线列阵用光纤水听器，其加速度灵敏度优于国际上已报导的结果，并在国防水声一级计量站对其进行了性能指标测试(来源：A14BC论文网www.abclunwen.com)。

Thehigh-density array has threshold energy of about 2TeV. With the YangbajingAS γ array, upper limits of γ-ray fluxes from many high energy galacticcelestial objects including Crab Nebula and active galactic nuclei weremeasured at the energy around 10TeV, and the possible evidence of existing10TeV cosmic gamma ray burst was looked for. The Sun's shadow of cosmicrays has been observed and shift of the Sun's shadow resulted from the solarinterplanetary large scale magnetic field was found. And the ultra high energyspectrum of primary cosmic ray around the 'knee' was reached.

利用羊八井AS γ阵列已测量了包括蟹状星云在内的多个河内高能天体和活动星系核的10TeV γ流强上限，显示出可能存在的10TeV宇宙γ暴的线索，作出了宇宙线太阳阴影图，并得到了由于太阳及行星际空间大尺度磁场造成的宇宙线太阳阴影相对于太阳几何位置的偏移，测出了超高能宇宙线"膝"区能谱。

Random Array Generator - Simple function for generating a random array of long integers.

这是一个简单的函数，用来生成一个长整数的随机数组。

Based on the theory and method of geophone array, we analyze the question of geophone array under two conditions.

本文基于组合的基本原理和方法，分析了两种情况下检波器组合问题。

The joining material may be a solder paste, the substrate may be a semiconductor chip substrate, a computer chip. The process may be used to produce flip chips, ball grid array modules, column grid array modules, circuit boards, and attachment structures of the preceding components including information handling systems.

连接材料可以是焊剂糊料，基片可以是半导体芯片基片，计算机芯片，本方法可用于制造倒装式芯片、球粒格网阵列式模块、柱形件格网阵列式模块、电路板、以及包括信息管理系统的上述元件的附着结构。

A micro hotplate array was made by incorporating several micro hotplates into a single chip as an integrated sensor array.

集成的阵列式的微传感器是当今传感器发展的一个方向，例如广谱气体传感器，该种传感器需要把多个微热板集成在同一个芯片，形成微热板阵列的器件形式。

The method transfers the observed data from space domain to 2-D space-time domain by exploiting the cross-correlation of the array outputs,and a large amount of virtual elements are generated through space-time processing.Therefore the constraint over the array configuration and the element identity can be significantly weakened,which means the matching subarray is no longer needed and the advantage of the traditional DOA matrix method,such as automatical parameter alignment and no need of 2-D search,is still available.

该方法在保持原DOA矩阵方法无需二维谱峰搜索和参数配对等优点的基础上，利用阵元输出之间的互相关关系将空域的阵列观测数据变换到时空域，通过空时二维处理在时空域中衍生出大量虚拟阵元，从而大大减弱了传统方法中对阵列结构、排布方式和阵元一致性的约束，不需要匹配子阵，无冗余阵元与孔径损失，并适用于阵元排列不规则的阵列。

This implies that as you get closer to the array, each module has to radiate into a larger included angle, so the splay angles between modules must increaseas you move from the top to the bottom of the array.

这意味著当你离线阵列越近，其每一个扬声器模组的辐射角度应该越大，所以阵列中从上至下，箱体之间的间隔角度也应该是逐渐增大的。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。