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.

現(xiàn)代艦艇編隊受到的威脅主要是來自于空中，而雷達在艦艇編隊防空中扮演著非常重要的角色人人射人人干人人操，因此国产又大又长又硬又爽又刺激视频，如何滿足艦艇編隊在防空作戰(zhàn)中對雷達的需求也就成為艦載雷達發(fā)展的一個重要方向中文一级a一级a爰片免费免免。

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.

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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.

本文基于雷達信號和雷達模糊度函數(shù)間的一致關(guān)系，提出了任意平方可積的二維有界函數(shù)是雷達模糊度函數(shù)的充要條件网友自拍另类重口日韩AV，并且指出它包括了Wilcox提出的離散的可實現(xiàn)條件男女內交网站在线观看。

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

在連續(xù)波雷達測量系統(tǒng)中，應(yīng)用了基于線性調(diào)頻信號的數(shù)字化多頻測距改進算法男人扒女人添高潮视频动态，提高了雷達的測量精度深夜福利爱爱视频。

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的雷達相比，穿越火線的雷達簡直可以說是一個外掛了丁香花高清在线观看，可見其好用的地方黄色操屄，但就是這么好的東西也還是有好多人不會用，下面我們從最簡單的說起超碰在线永久，讓大家一步一步成為一個雷達高手亚洲电影色色黄片！

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.

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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.

一種改進氣象雷達測雨性能的新方法胡大璋（中國電波傳播研究所青島研究中心www.无码在线，青島266003）常規(guī)氣象雷達無法分離雷達反射率和雨衰減率，因此用它測雨具有一些原理上的誤差玖玖爱精品视频在线观看免费2。

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

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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.

針對線性調(diào)頻連續(xù)波雷達實現(xiàn)中急待解決的技術(shù)問題，文中提出并驗證了線性調(diào)頻連續(xù)波信號的綜合動態(tài)測試技術(shù)在线直接性片黄色视频，可以完成對線性調(diào)頻連續(xù)波雷達發(fā)射信號的掃頻線性度黄色视频一区二区三区免费在线观看、掃頻帶寬和掃頻斜率的綜合動態(tài)測試日韩免费午夜毛片视频，為衡量實際線性調(diào)頻連續(xù)波雷達的系統(tǒng)性能創(chuàng)立了精確有效的測試手段；文中建立的非實時閉環(huán)動態(tài)校正技術(shù)使一部實際的線性調(diào)頻連續(xù)波雷達的發(fā)射信號（時帶積3×10〓）的掃頻線性度從25%改善為0.1%（方均根線性度0.04%）在线国产福利网址，優(yōu)于國外已公布的80年代同類雷達中采用復(fù)雜的實時閉環(huán)動態(tài)校正環(huán)路所獲得的實際結(jié)果（0.22%）久久久久久AV无码免费网站动漫；為了改善線性調(diào)頻連續(xù)波雷達的實時性和分辨單元數(shù)處理能力，文中發(fā)展完善了實帶通信號的采樣定理并給予了嚴格證明五月综合婷婷久久狠狠，并在此基礎(chǔ)上提出了欠采樣等效混頻原理二色aⅴ国产热，將其應(yīng)用于實際線性調(diào)頻連續(xù)波雷達的距離分段處理中；針對線性調(diào)頻連續(xù)波雷達中系統(tǒng)背景干擾和回波動態(tài)范圍問題日韩午夜在线看导航视频网站免费下载，創(chuàng)立了系統(tǒng)背景綜合抑制技術(shù)和頻域動態(tài)范圍壓縮技術(shù)久草观看视频，并將它應(yīng)用于實孔線性調(diào)頻連續(xù)波雷達系統(tǒng)中，顯示出它們的有效性最新白嫩丰满美女AV网站。

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.

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