毕业设计说明书中文摘要随着现代雷达技术的发展，雷达系统对天线测角精度的要求越来越高。频扫单脉冲天线在频扫基础上引入单脉冲体制，可以有效提高天线的测角精度。频扫单脉冲天线具有结构紧凑、体积小、重量轻的优点，因此其在雷达系统中被广泛应用。本文主要讲述了频扫天线的研究背景与国内外现状以及在频扫中引入单脉冲的必要性，频扫天线的基本原理与实现方式，泰勒分布与贝利斯分布的特点与性质，以泰勒分布与贝利斯分布为基础生成和差波束的单脉冲天线的基本原理与实现方式，频扫单脉冲天线的设计思路与步骤，波导缝隙天线设计的一般性思路与设计方法。实现了一个由两根各开60条缝的波导构成的X波段频扫单脉冲天线,该天线工作在9-10GHz,增益为21dB,副瓣为-25dB,零值深度为-38dB。80391

毕业论文关键词  频扫  单脉冲  波导缝隙天线  泰勒分布  贝利斯分布

毕业设计说明书外文摘要

Title     X-band Frequency Sweep Monopulse Antenna Array   

Abstract With the development of modern radar technology, the measurement accuracy of antenna angle in radar systems has become increasingly necessary。Frequency sweep monopulse antenna system introduces monopulse on the basis of the frequency sweep antenna ,which can effectively improve the angular accuracy of the antenna。 Frequency sweep monopulse antenna has an advantage over others for its compact structure,smaller volume and lighter weight。As a result,it is widely used in radar systems。 This paper presents the background and the current status of the research domestic and foreign。Then,the paper interprets the necessity of introducing monopulse in the frequency sweeping and the basic principles and implementation of a frequency sweep antenna。In addition,the paper demonstrates the distribution of Taylor and Bayliss, as well as the basic principles and implementation of the monopulse antenna on the basis of sum beam and difference beam。At last,the paper puts up the design ideas and steps of implementing frequency sweep monopulse antenna, the general idea and  method of designing waveguide slot antennas。The final X-band frequency sweep monopulse antenna consists of two waveguides opening 60 slits,working at a frequency of 9 to 10 GHz。The antenna has the gain of 21dB,sidelobe of -25dB and a value of zero depth of -38dB。

Keywords  Frequency sweep   monopulse   Waveguide slot antenna   Taylor Distribution   Bayliss Distribution     

目   次

1  绪论 1

1。1  研究背景 1

1。2  国内外现状 1

1。3 本文主要内容及研究意义 3

2  频扫单脉冲天线的基本理论 4

2。1 频扫天线的定义与基本原理 4

2。2 单脉冲天线的定义与基本原理 4

3  X波段频扫单脉冲天线设计思路与步骤 19

3。1 设计的总体思路 19

3。2 算法实现与程序设计 19

3。3 波导建模 21

3。4 设计改进 22

3。5 波导设计的一般性思路 22

4  设计结果分析 23

4。1 近区场幅度分布 23

4。2 远区场方向图