新一代外贸155测速雷达数据处理系统的研究与实现

发布时间：2018-06-14 06:06

本文选题：测速雷达 + 信号与数据处理　；参考：《南京理工大学》2017年硕士论文

【摘要】：新一代外贸155测速雷达是测量155毫米自行加榴炮炮弹初速的重要装置,数据处理系统是其重要组成部分。随着对雷达测速精度的要求不断提高,研发高效、准确的测速雷达数据处理系统具有十分重要的意义。本文就是研究并实现了基于ARM嵌入式系统的新一代外贸155测速雷达数据处理系统。本文依据新一代外贸155测速雷达的应用场景,在研究其工作原理的基础上,提出了一种基于改进小波阈值去噪的测速雷达功率谱检测算法,通过使用改进的阈值函数、选取根据小波分解层数变化的阈值进行小波去噪,经过对改进的算法和传统算法的比较,验证了本文提出的改进算法有效地提高了功率谱信噪比。根据系统要求,本文提出一种基于ARM嵌入式技术的测速雷达数据处理系统实现方案。完成系统中基于ARM Cortex-A9架构的i.MX6处理器和其外设的硬件平台的设计、FPGA与ARM间通信接口的实现、嵌入式Linux系统开发环境的搭建、ARM与FPGA的数据通信驱动程序的开发和基于Qt的包含基本功能和通信功能的显控界面设计。通过对系统进行测试和性能分析,结果表明本系统成功实现了 FPGA与ARM间的数据通信、准确计算了炮弹初速并实现人机交互。
[Abstract]:The new generation of foreign trade 155 speed radar is an important device for measuring the initial velocity of 155 mm self-propelled artillery shells, and the data processing system is an important part of it. With the increasing requirement of radar speed measurement accuracy, it is of great significance to develop an efficient and accurate radar data processing system. This paper studies and implements a new generation of foreign trade 155 speed measuring radar data processing system based on arm embedded system. Based on the application scene of a new generation of foreign trade 155 speed measuring radar, based on the research of its working principle, this paper puts forward a speed radar power spectrum detection algorithm based on improved wavelet threshold de-noising, by using the improved threshold function. The wavelet denoising algorithm is selected according to the threshold of wavelet decomposition layer number change. The comparison between the improved algorithm and the traditional algorithm proves that the proposed improved algorithm can effectively improve the SNR of power spectrum. According to the requirement of the system, this paper presents a scheme of data processing system for speed measuring radar based on arm embedded technology. The design of i.MX6 processor based on arm Cortex-A9 architecture and its peripheral hardware platform is completed. The communication interface between FPGA and arm is realized. The design of embedded Linux system development environment the development of data communication driver between arm and FPGA and the design of display and control interface based on QT including basic function and communication function. Through testing and performance analysis of the system, the results show that the system has successfully realized the data communication between FPGA and arm, accurately calculated the initial velocity of projectile and realized man-machine interaction.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN959

【相似文献】