查询词典 navigation radar

The multiformity of radar system makes it difficult to deinterleave radar signals.

中文摘要：雷达体制的多样化增加了信号分选与跟踪的难度。

Then, BAE Systems in funding from the Department of Defense launched the "European Nighthawk"Ⅰ/Ⅱ(Nightjar Ⅰ/Ⅱ) research project, located in the Wharton's radar cross-sectional area test test UCAV design a variety of radar scattering.

随后，BAE系统公司在国防部的资助下开展了"欧夜鹰"Ⅰ/Ⅱ（Nightjar Ⅰ/Ⅱ）研究项目，在其位于沃顿的雷达截面积试验场测试了多种UCAV外形设计的雷达散射特性。

Based on rain drop size distribution data measured in Qingdao, Guangzhou and Xinxiang, the radar reflectivity factor Z for spherical rain drops, the radar reflectivity factor Z〓 and differential reflectivity Z〓 for oblate ellipsoid rain drops have been calculated.

基于雨致交叉极化理论，提出了雨致交叉极化的二阶小变量近似方法以及新的雨致交叉极化预测模式，与其它模式和实验数据比较表明，该模式更能反映波的极化特征，较其它模式有一定的改进。

Combined with the feature of radar interference in modern naval combat, the model about radar interference resource distribution of warship is established with the theory of multi-objective fuzzy optimum dynamic programming .

针对现代海战中需干扰的敌目标雷达多而我方雷达干扰资源有限的特点，运用多目标模糊优选动态规划理论建立了舰艇雷达干扰资源分配的数学模型。

In display parts of the above-mentioned system, one key technology of the digital of radar video image has been solved. After A/D conversion and clutter suppression pretreatment, the radar analog data can be converted from polar coordinates to orthogonal coordinates and displayed in real time. Further, the image can achieve higher resolution and display speed in host.

本文所述显示系统中，结合实际需要，解决了该系统中雷达图像数字化的一种关键技术，将雷达模拟回波数据经A/D变换和杂波抑制预处理后，从极坐标到直角坐标实时地转换，并在计算机的光栅扫描显示器中显示，能够获得分辨率较高、实时性较好的雷达图像。

Because of difficulties in making a polarimetric radar system, there is no progress in the field of radar polarimetry for a long time.

由于极化雷达设备制造难度大，所以在很长一段时间里雷达极化的发展停滞不前。

But as a special radar it is difficult to analyze and pretreat the data and evaluate the performance of the radar detection.

但是对于一部特定雷达来说，要进行资料分析和预处理以及评价其探测性能仍然比较困难。

Radar pulse length and range weighing function are two of the factors determining the radar volume.

根据此系统性差，有如下几点重要推：达体积内通常包含有多层结构和背景散射体。

The Quadrantid meteor shower and the meteor speed during the period of this meteor shower are successfully observed using the Wuhan meteor radar for the first time, and then the correlative questions of observing meteor shower using the all-sky meteor radar are also discussed.

利用武汉流星雷达，首次成功地观测了象限仪座流星雨及流星雨期间的流星速度，讨论了利用单站全天空流星雷达观测流星雨的相关问题。

In 1960, the FAA began successful testing of a system under which flights in certain positive control areas were required to carry a radar beacon, called a transponder, that identified the aircraft and helped to improve radar performance.

1960年，联邦航空局进行了一项成功的试验，在特定管制空域内的航空器安装了一个称作应答机的雷达信号装置。它能够用于航空器识别并增强雷达的性能。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48