Research And Implementation Of A New Generation Of Foreign Trade 155 Speed Radar Data Processing System

The new generation of foreign trade 155 speed radar is an important equipment to measure the muzzle velocity of the 155mm self-propelled howitzer's projectile,data processing system is an important part of it.With the increasing requirements of precision of radar velocity measurement,it is of great significance to develop efficient and accurate speed radar data processing system.This paper is to study and achieve the new generation of foreign trade 155 speed radar data processing system based on ARM embedded system.According to the application scene of the new generation of foreign trade 155 speed radar,on the basis of studying its working principle,this paper proposes a speed radar's power spectrum detection algorithm based on improved wavelet threshold de-noising.The algorithm realizes wavelet de-noising by using the improved threshold function and selecting the threshold according to the wavelet decomposition.Through the comparison of the improved algorithm and the traditional algorithm,it verified that the improved algorithm can effectively improve the SNR of the power spectrum.According to the system requirements,this paper presents an implementation scheme of data processing system for speed radar based on ARM embedded technology.The paper accomplishes the hardware platform of i.MX6 processor based on ARM Cortex-A9 architecture and its peripherals,realization of communication interface between FPGA and ARM,building the development environment of embedded Linux system,the development of data communication driver between ARM and FPGA and the display and control interface design based on the Qt,which contains the basic and communication functions.Through testing and analyzing the system,the result showed that the system successfully achieves the data communication between FPGA and ARM,accurately calculates the muzzle velocity of projectile and realizes human-computer interaction.