查询词典 radar

The threat that modern fleet met with mainly from the air,and the radar plays a very important role in fleet air defence,therefore,how to meet the requirements of the fleet to the radar in air defence operation becomes a very important direction of shipboard radar development.

现代舰艇编队受到的威胁主要是来自于空中，而雷达在舰艇编队防空中扮演着非常重要的角色，因此，如何满足舰艇编队在防空作战中对雷达的需求也就成为舰载雷达发展的一个重要方向。

Finally, applications of the anomalous propagation of microwave in tropospheric ducts are discussed: in connection with concrete radar parameters, effects of ducts on radar range and detection performance are discussed, the results obtained are of great value for the overall design of radar systems; by use of the interference standards of ITU-R, the co-ordination area of satellite earth-station under tropospheric ducts environment is studied ; by explaining the relationship between evaporation duct and advection fog, a new way to forecast sea advection fog from evaporation duct is provided.

最后讨论了对流层大气波导环境下电波异常传播特性的应用：结合具体的雷达系统参数，模拟计算了大气波导对雷达作用距离及发现概率的影响，对雷达系统的总体设计具有重要的参考价值；对表面大气波导环境下的卫星地球站通信协调区域进行了确定，从理论上很好地给出了协调距离量级的概念，为卫星地球站与地面微波站之间的协调提供了依据和参考；分析了利用海面蒸发波导来快速预测平流海雾的新方法，完善了平流海雾的预报方法，对海上安全作业和生产具有重要的意义。

On the basis of the coincident relation between a radar signal and a radar ambiguity function, an arbitrary bounded two-dimensional function of intergrable square is presented as a necessary and sufficient condition for radar ambiguity function.

本文基于雷达信号和雷达模糊度函数间的一致关系，提出了任意平方可积的二维有界函数是雷达模糊度函数的充要条件，并且指出它包括了Wilcox提出的离散的可实现条件。

At last, the systems of continuous wave radar and impulse radar are developed based on simulations for modern radar.

在连续波雷达测量系统中，应用了基于线性调频信号的数字化多频测距改进算法，提高了雷达的测量精度。

Cs, compared with radar, radar cross the line of fire could be described as a plug-in, and see that they are easy to use, but is that good things are still there are many people will not use the following, we start from the most simple, Let us step by step to become a radar expert!

跟cs的雷达相比，穿越火线的雷达简直可以说是一个外挂了，可见其好用的地方，但就是这么好的东西也还是有好多人不会用，下面我们从最简单的说起，让大家一步一步成为一个雷达高手！

According to practical requirement, this paper puts forward a plan of aided decision support system for selecting rad- ar battlefield, which makes some aided decision functions available, such as calculating smooth degree and angel of defilade of radar field, profiling radar field and drawing graphs of actual radar detecting power, etc.

基于数字高程模型数据，可以生成虚拟三维环境，结合实际应用需要，提出了一种雷达阵地选择辅助决策支持系统方案，并实现了雷达阵地平整度、遮蔽角参数计算和阵地剖面图、雷达实际探测威力图绘制等辅助决策功能。

Conventional meteorologic radar cannot distinguish radar reflectivity and specific attenuation of rain. There is some principled error to measuring rain by it. A new method on inversing rain rate distribution along Earth-Space path by radar-satellite system is presented in this paper.

一种改进气象雷达测雨性能的新方法胡大璋（中国电波传播研究所青岛研究中心，青岛266003）常规气象雷达无法分离雷达反射率和雨衰减率，因此用它测雨具有一些原理上的误差。

This paper expouds the characteristics of quasi-continuous wave radar,and compares the pulse Doppler radar with CW radar and quasi-CW radar.

阐述了准连续波雷达的特点，并对脉冲多普勒雷达、连续波雷达和准连续波雷达进行了比较，结果表明准连续波雷达优于脉冲多普勒雷达和连续波雷达。

To solve the exsisting problems in the realization of the LFM/CW radar, the thesis presents a technique for dynamically measuring the LFM/CW signals, which can accomplish the dynamic measurements of FM linearity, FM bandwidth and FM slop of the transmitted signals of LFM/CW radars. This technique creates an effective and accurate means of judging the performance of LFMCW radars. The linearity-correction techniques presented in the thesis successfully make the linearity of the transmitted signals of an actual LFM/CW radar reduce from approximately 25% to 0. 1%(or r. m. s linearity of 0.04%), better than the best results (0.22%) obtained by foreign researchers with complex linearization closed-loop in the same kind of LFM/CW radars, according to the published literatures during the last decade. In order to improve the capability of the real-time processing and range-cells management of LFM/CW radars, the principle of equivalent mixing by lacking-sampling process of band-pass real signals is proposed based on the well-proved improvedversion of sampling theorem of band-pass real signals. This principle is used to configure the range-segments processing of the beat signals of an actual LFM/CW radar. The techniques of system-background interference suppression and the beat signal's dynamic range suppression are proposed, and are realized in an actual LFM/CW radar to demonstrate their effectiveness.

针对线性调频连续波雷达实现中急待解决的技术问题，文中提出并验证了线性调频连续波信号的综合动态测试技术，可以完成对线性调频连续波雷达发射信号的扫频线性度、扫频带宽和扫频斜率的综合动态测试，为衡量实际线性调频连续波雷达的系统性能创立了精确有效的测试手段；文中建立的非实时闭环动态校正技术使一部实际的线性调频连续波雷达的发射信号（时带积3×10〓）的扫频线性度从25%改善为0.1%（方均根线性度0.04%），优于国外已公布的80年代同类雷达中采用复杂的实时闭环动态校正环路所获得的实际结果（0.22%）；为了改善线性调频连续波雷达的实时性和分辨单元数处理能力，文中发展完善了实带通信号的采样定理并给予了严格证明，并在此基础上提出了欠采样等效混频原理，将其应用于实际线性调频连续波雷达的距离分段处理中；针对线性调频连续波雷达中系统背景干扰和回波动态范围问题，创立了系统背景综合抑制技术和频域动态范围压缩技术，并将它应用于实孔线性调频连续波雷达系统中，显示出它们的有效性。

In chapter 5, in allusion to the shortcoming of the existing high resolution radar target detection algorithm, taking the problem of high resolution radar target detection as the problem of true-false target recognition, and borrowing ideas from the dealing with novelty problem, this paper introduces one-class SVM into high resolution radar true-false target recognition for the first time. That can provide a new idea for solving high resolution radar true-false target recognition problem.

第五章针对现有的高分辨雷达目标检测算法的缺陷，将高分辨雷达目标检测问题等效为真假目标识别问题，并借鉴处理异常值问题的思想，首次将1类支持向量机引入高分辨雷达真假目标识别之中，为解决高分辨雷达真假目标识别问题提供了一条崭新的思路。

This is not an ordinary box, which is used as a background picture of the dialog box, very pretty.

详细说明：这可不是一个一般的对话框，它是用图片作为背景的对话框，非常好看。

Conceal me what I am,and be my aid for such disguise as haply shall become the form of my intent.

遮掩我的身份，帮助我，我的面具将成为我的目的。