雷达

First, in order to verify the correct of this retrieval month, by using the data of three-dimensional wind field, raininess field and temperature field that are output by MM5 numerical simulation, we climate the radial velocity field and echo intention field in the in-phase observation area of Dual-Doppler radar, then, on the base of the upwards retrieval theory and using the radial velocity field and echo intention field in the in-phase observation area of Dual-Doppler radar, we retrieve the atmospheric three-dimensional wind field.

首先，为检验此种反演方法的可靠性，我们使用MM5数值模式输出的三维风场、雨强场、温度场等数据，分别模拟生成两部雷达同步观测区的径向速度场和回波强度场，然后根据以上的反演理论利用模拟的双多普勒天气雷达观测到的径向速度场和回波强度场反演出大气三维风场。

It decreases refit requirement of vehicle and reduces cost in manufacture and applications.

该雷达采用了转台翻转机构和方舱一体化设计，减少了车辆的改装要求，降低了雷达的制造成本和使用成本。

The radial velocity and the intensity of reflectivity, and the model state variables are introduced in this paper.

本文设计了一个雷达资料三维变分同化方案并采用梅雨和台风天气的实际雷达观测资料进行了同化和预报试验。

Experimental result shows that when the incident is vertically polarized, the head direction RCS average's variation along the relative curvature is of "W" shape and has 2 minimum values; when horizontally polarized, the head direction RCS average's variation is different in two bend fashions.

实验结果表明，垂直极化下头向雷达散射截面均值随弯度呈"W"形变化，有两个极小值；水平极化下两种弯折方式头向雷达散射截面均值变化趋势差异较大，上下弯折时呈"W"形变化，水平弯折时单调降低。

Aiming at the problems of assembly interference and maintainability in the processing of radar rotating platform structural design, virtual reality technology is introduced into the design process.

针对雷达转台结构设计中易出现装配干涉和维修性考虑不足等方面的问题，将虚拟现实技术引入设计过程，提出了应用虚拟现实技术进行雷达转台结构设计的流程。

This paper analyzes the principle of chief anti jamming technologies of frequency agile radar FAR frequency diversity radar FDR and self adapt frequency agile radar SAFAR in frequency domain studies the effectiveness measurement methods of these technologies brings forward the self adapt improvement factor which measuring the anti jamming effectiveness of self adapted frequency agile radar .

分析了频率捷变，频率分集，自适应频率捷变等雷达在频域的主要抗干扰技术原理，研究了这些技术的效果度量方法，提出了度量自适应频率捷变雷达抗干扰效果的自适应改善因子。

The satellites transmit pulses and the airships receive the echo. BSAR radar has separated transmitting and receiving sets. Comparing to the usual bistatic synthetic aperture radar, it is able to gain rich information, has long distance effectiveness.

BSAR雷达由于发射、接收分置，相对于普通的单基雷达，具有获取信息丰富、作用距离远、安全性高、抗干扰能力强和抗截获性能好等突出优点。

Phase shifter is a key component of phased-array radar. It's performance has direct effects to phased-array radar system.

移相器是相控阵雷达中的关键部件，其性能的优劣对相控阵雷达系统存在重要影响。

In order to probe the absorb coefficients of earth medium by the direct wave, reflected wave and transmied wave amplititude which are picked up from the radar wave racords yielded by finite element method,the paper gives out the attenuated radar wave equations in time domain and the attenuated radar wave differential equations while the motion changes simple harmonic with time and electric parametets change slowly with space.

摘 要 为了用有限元方法生成雷波正演记录，从而拾取直达波、反射波、透射波振幅信息，以确定介质吸收系数，文章在时间域给出了雷达波含衰减项的波动方程，及在运动随时间简谐变化以及电性参数随空间缓变的条件含衰减项的雷达波遵循的简化微分方程。

Streak tube imaging lidar is a new type of flash laser radar,and its receiving detector is the transient optical streak tube. The characteristic of STIL is of wide field of view and high resolution. It has two types,single slit and multiple slits.

条纹管激光成像雷达是近10年发展起来的一种新型闪光式激光成像雷达，以瞬态光学器件条纹管作为探测接收器，可做到大视场、高分辨，分单狭缝和多狭缝两种体制。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。