查询词典 navigation radar

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。

By the way, different radar clutters are used in the hardware.The real time clutter is good for radar clutter simulation.

另外，本系统对各种分布杂波进行了硬件实现，实时产生的杂波序列更好的模拟了真实雷达回波。

Its main function is to produce radar echoes, clutters and noise. Its used for radar subsystems debugging when the microwave frontend is not available.

它的主要功能是用来产生目标的回波、杂波和环境噪声，在前端电波不存在的情况下对雷达分系统进行调试。

Chapter two illustrates the basic radar signal theories that are closely related to pulse compression techniques and some key corollaries are concluded. The requirements to signal properties in the low probability intercept radar application are also discussed.

论文内容的安排是，第一章概述雷达技术理论的发展，说明脉冲压缩的主要研究内容和研制开发多信号脉压系统的意义，并介绍本文的主要工作。

In this paper,we present a rapid and practical radar azimuth calibration method and shaft angle position digitalizing system that has been successfully proven by radar installation test.

给出了一种已经雷达装机试验成功的方位标校方法和轴角变换系统，并被广泛应用于高机动地面情报雷达伺服系统中，取得了良好的效果。

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