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摘要雷达系统具有全天候监测、定位与跟踪目标的功能，在各方面得到了广泛应用。采用宽带技术的雷达也在日益发展并在实践上不断被应用。因此，宽带线性调频信号的产生与处理有很大的研究价值。宽带技术雷达不断得到完善，也在各个领域被广为接纳和使用，因此宽带线性调频信号的研究有着重要意义。27070
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本文主要是做基于FPGA的宽带线性调频信号产生课题的研究，主要完成的工作有：
1）详细介绍了连续波雷达与脉冲雷达
2）也对线性调频连续波与线性调频脉冲信号做了深入研究，主要分析了它们的相关性质
3）对雷达回波的处理过程做了相关分析，并对线性脉冲信号进行了建模，通过Matlab对连续波信号与脉冲信号进行了仿真
4）在FPGA平台上验证和处理宽带线性调频连续波信号得出结果。
关键词 宽带线性调频信号 脉冲压缩 DDS FPGA
毕业论文设计说明书外文摘要
Title Wide-band linear frequency modulation signal based on FPGA
Abstract
Along with the rapid progress of science and technology, the comprehensive power of nations is largely increasing. As an important part of the future high-tech information warfare, the complete radar system can monitor targets all day by positioning and tracking in order to occupy the initiative of the battlefield. The increasingly developing radar with broadband technology is also applied in practice continuously, so the wide-band linear frequency modulation signal has great significance in the modern radar applications.
This paper is mainly about the research of the generation of wide-band linear frequency modulation signal based on FPGA, and goes into details about the generation principles of the linear frequency modulation continuous wave signal and linear frequency modulation pulse signal. In the paper I also analyze the related properties of the two kinds of signals above, and process the linear pulse signal through Matlab simulation of the two kinds of signals described, and finally get the related results on the FPGA platform after the validation and processing of wide-band linear frequency modulation continuous wave signal.
Keywords Wide-band linear frequency modulation signal Pulse compression DDS FPGA
目 次
1. 绪论 1
1.1 研究背景及意义 1
1.2 研究现状 2
1.3 章节安排 3
2 线性调频雷达 4
2.1 线性调频连续波雷达 4
2.2 线性调频脉冲雷达 5
3 线性调频信号仿真 6
3.1 线性调频信号介绍 6
3.2 线性调频信号原理 6
3.3 线性调频信号仿真 8
3.3.1 线性调频连续波信号仿真 8
3.3.2 线性调频脉冲信号仿真 13
3.4 脉冲信号后续处理 18
3.4.1 脉冲压缩处理 18
3.4.2 脉冲积累 20
4 线性调频信号的FPGA实现 22
4.1 DDS的大致研究 22
4.1.1 DDS的组成 22
4.1.2 DDS具体工作过程 23
4.2 DA芯片 23
4.3 FPGA实现线性调频连续波信号 23
结 论 27
致 谢 28
参考文献29
1. 绪论
1.1 研究背景及意义