查询词典 radar

Netlike Radar System is the trend of radar development at present.

组网雷达是目前雷达发展的趋势。

Non-cooperative bistatic radar plays an important role in Netlike Radar System for its excellent performance.

非合作式双基雷达由于其优良的&四抗&特性，在组网雷达中占有重要地位。

Since the remote distance from radar target and the great variety in modern war fields, the nonintegrity and complexity from radar echoes bring many difficulties for analyzing and recognizing object. So it is the important foundation for us to make optimizing analyse of the scattering echoes.

由于雷达远距离遥感以及现代战场条件下场景复杂多变，使得从目标所获得的信息具有不完整性和多变性的特点，这给进一步的分析和处理带来相当困难，因此对雷达目标散射回波信号的优化分析和处理便成为雷达目标识别系统的重要基础。

Therefore, a polarimetric radar can obtain times of information than a traditional radar.

因此，全极化雷达可以提供数倍于传统雷达的信息量。

But we can believe that it will be a satisfactional method for its many merits. Keywords: ground penetrating radar, crosshole radar, electromagnetic fields, forward problem, dipole antenna. propagation constant.

这一现状当然要依靠理论的完善来加以解决，虽然这一过程是长期的，但可以相信，由于探地雷达的诸多优势，它必将获得极大发展而成为一种最理想的地下物探手段。

Since the strong ground clutter processing residual on the low beam position caused by the sequential scanning of the beam in radar elevation is used as ground clutter and it appears in high beam position skippingly,this will affect radar normal dete.

由于这种雷达俯仰面波束的时序扫描而产生低波位的强地物回波处理剩余，作为地物杂波在高波位时跨周期出现，影响雷达系统正常的检测与显示，为解决此问题文中提出了一种比较有效的处理方法。

As parts of an advantage signal processing model, the plots correlation of trilobe of 3-D radar and mono-pulse angle measurements are discussed thoroughly. The data processing model of 3-D radar gives some new idea too.

对于三坐标雷达所特有的多波束点迹凝聚及测角技术以及其他先进的信号处理技术都进行了较为深入的分析，建立了全面合理的信号处理模型。

In degraded PSM matching classification, errors modification method of degraded PSM is presented and the matching tensor of every canonical scattering centers is given. In Chapter 4, the theory of wideband millimeter-wave radar target identification is introduced. It is indicated that, for HR radar target identification, description of temoral relations among features and pattern recogntion adaptive to variation of target angles are of key importance. A rule-based pattern recogniton method of sequential reasoning is proposed, which uses a series of rules to describe relations of features variation caused by target angles variation and has the advantages of adaption to unrandom variation and false probability control in classification over traditional statistical pattern recognitiop method. Feature extraction is crucial step in target identification. In range profiles identification application, features are extracted by means of range domain pre-processing algorithm, spacial and amplitude visual computation directly from range profiles and transform algorithm based on range profiles. Visual or transformed features are either sufficiently convinced or necessarily convinced and both of them are effective and robust to range profiles identification.

在第四章，首先对宽带毫米波体制背景下目标识别方法的一些特点进行了阐述并指出，在毫米波雷达目标识别中，特征之间动态关系的描述以及能适应目标姿态角变化的模式识别方法的研究乃是要解决的关键问题；进而提出了一种基于规则库的序贯推理模式识别新方法，在这种方法的研究中，主要包括序贯推理规则库的规则排列与特征选用顺序以及规则库的收敛等问题；这种方法克服了传统的统计模式识别方法特征利用效率不高、难以适应特征值的非随机性变化的缺点，把姿态角变化所引起的特征的变化用一系列规则加以表示，其优点是能适应特征值的非随机性动态变化，并能控制分类过程中的差错概率α；特征抽取是目标识别中的关键步骤，在基于目标距离像的特征抽取方法研究中，提出了距离空间域的预处理算法、距离空间域与幅度域的直观特征抽取方法以及基于目标距离像变换分析的特征抽取方法。

What few people know is that radar reports for the National Weather Service are also airbrushed, so that certain radar images aren't released.

鲜为人知的是，国家气象服务的雷达报告也被弄模糊过，所以特定的那个雷达的照片他们不放出来。

In term of antagonizing anti-radiation weapon,phased array radar is more predominant than ordinary radar.

反辐射武器是现代电子战中行之有效的硬杀伤武器。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。