摘要对毫米波探测器系统而言,在实际应用中,往往会因为环境中存在的大量噪声和干扰,使得探测器获取的目标回波发生奇异和变形,影响了对目标的识别和探测,因此,对探测器信号进行滤波处理,提高其稳定性是十分必要的。27361
本次毕业设计的主要工作包含硬件和软件两方面的内容。硬件设计方面,根据信号处理要求,选择了FPGA作为处理芯片,利用其高速可编程的特点对探测器信号中的干扰及噪声进行处理,并且按照功能分别对每个模块电路进行了详细设计。软件设计方面,对各个软件模块进行了FPGA实现并且进行了仿真测试。
最后,对系统进行了多次调试与测试,测试结果表明,本文论述系统性能良好,满足任务书要求,达到了预期的目的。
关键词 探测器 信号处理 FPGA FIR
毕业论文设计说明书外文摘要
Title Design of the detector signal processing circuit based on FPGA
Abstract
For millimeter-wave detector system, in practice, often because a lot of noise and interference present in the environment, so that the target echo detector acquired singular occurrence and deformation, affecting the target identification and detection, and therefore, the detector signal filtering process, to improve its stability is essential.
The main work of this graduation project includes two aspects of hardware and software. Hardware design, signal processing requirements, select the FPGA chip as the processing, use its high-speed programmable features of the detector signal interference and noise processing, and for each module circuit functions are carried out in accordance with the detailed design. Software design, the various software modules of the FPGA implementation and simulation tests.
Finally, the system has been repeatedly debugging and testing, the test results show that a good article discusses system performance to meet the requirements of the mission statement, to achieve the desired purpose.
Keywords Detector Signal Processing FPGA FIR
目 次
1 绪论 1
1.1 研究背景及意义 1
1.2 国内外研究现状 1
1.3 本文主要研究工作 2
2 原理与方案设计 4
2.1 FMCW调频连续波雷达 4
2.1.1 基本工作原理 4
2.1.2 理论性能 5
2.2 FPGA综述 7
2.3 系统总体方案设计 8
3 探测器信号处理电路硬件设计 10
3.1 AD采样模块 10
3.2 DA模块 12
3.3 时钟发生模块 14
3.4 FPGA核心电路 15
3.5 通信模块 17
3.6 电源模块 18
3.6.1 TPS5430芯片电路 19
3.6.2 AMS1117芯片电路 20
3.6.3 TPS74401芯片电路 20
3.6.4 ICL7660芯片电路 21
4 探测器信号处理电路软件设计 22
4.1 信号处理电路软件总体框架设计 22
4.2 LTC2222控制模块 22
4.3 FIFO片内存储器 24
4.4 FIR滤波器模块 25
4.4.1 FIR滤波器原理 25
4.4.2 FIR滤波器设计及其FPGA实现 26 基于FPGA的探测器信号处理电路设计:http://www.751com.cn/tongxin/lunwen_21831.html