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Matlab频域脉压的FPGA实现+文献综述

时间:2017-10-15 18:59来源:毕业论文
研究了编码信号旁瓣抑制滤波器的设计方法,基于Matlab仿真分析了m序列的脉压旁瓣抑制滤波器设计及频域实现。最后,基于FPGA实现了255位m序列的频域脉冲压缩系统,测试结果表明设计
摘要脉冲压缩技术是现代雷达广泛应用的一种先进技术,它有效的解决了雷达距离分辨力与平均功率之间的矛盾。特别是二相编码信号脉冲压缩容易实现,所以得到广泛的应用。然而,在相位编码信号的脉冲压缩的过程中产生了距离旁瓣的干扰。因此,在相位编码信号脉冲压缩实际应用中如何抑制距离旁瓣成为的关键问题。
    本文主要介绍和分析相位编码信号中的m序列信号的脉冲压缩以及旁瓣抑制技术。首先,介绍了脉冲压缩基本原理,描述脉冲压缩的特点和实现方法。然后,讨论相位编码信号特点,重点介绍m序列。接着,研究了编码信号旁瓣抑制滤波器的设计方法,基于Matlab仿真分析了m序列的脉压旁瓣抑制滤波器设计及频域实现。最后,基于FPGA实现了255位m序列的频域脉冲压缩系统,测试结果表明设计正确。14444
关键词  脉冲压缩  相位编码信号  旁瓣抑制  m序列  频域脉压
毕业设计说明书(论文)外文摘要
Title  The FPGA realization of frequency domain pulse compression
Abstract
The pulse compression is one kind of vanguard technology that the Modern Radar widely used. some of the problem between the radar range resolution and the average power contradiction has been solved by it effectively. Especially binary phase-coded sequences can be easily generated and processed,so that they can be widely used.However, the side lobe interference was produced during the process of the pulse compression.Therefore,how to suppress the side lobe become a key problem during the practical application of Phase coded pulse compression.
Pulse compression of the M sequence signal in the phase coded signal and the side lobe suppression technology is mainly analyzed in this paper. Firstly, the characteristic, basic principle and the implementation method of pulse compression are introduced; Then, the characteristic of  phased coded signal is discussed, but the content is focused on M sequence; Thirdly, the design method of a Pulse compression side lobe suppression filter is researched, and the pulse compression side lobe suppression filter design of M sequence its implementation of frequency domain is analyzed based on MATLAB simulation. Lastly, a frequency domain compression system of 255 bit M sequence is realized based on FPGA and the result show that the design is right.

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Keywords  Pulse compression   Phase coded signal  side lobe suppression                  m sequence  frequency domain pulse compression
目  次
1 绪论    1
1.1 研究背景和意义    1
1.2 论文的主要工作及内容安排    2
2 脉冲压缩技术    4
2.1 脉冲压缩概述    4
2.1.1 脉冲压缩的原理    4
2.1.2 脉冲压缩的特点    5
2.2 数字脉冲压缩技术    7
3 相位编码信号    9
3.1 二相编码信号    9
3.1.1 二元伪随机序列    9
3.2 几种二元伪随机信号的介绍    10
3.2.1 巴克码    10
3.2.3 L序列    11
3.2.3 m序列    12
4 二相编码信号旁瓣抑制    16
4.1 旁瓣抑制技术简介    16
4.2 二相编码信号的失配滤波设计    18
4.2.1 线性规划法(LP)    19
4.2.2 最小均方逆滤波法(LS)    20
4.2.3 基于凸优化的旁瓣抑制滤波器设计    21
4.3 Matlab仿真实现结果    23
5 FPGA简介    28 Matlab频域脉压的FPGA实现+文献综述:http://www.lwfree.cn/tongxin/20171015/14993.html
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