Software Design And Development Of Single Channel Impulse Ground Penetrating Radar System

Ground penetrating radar is an underground material exploration tool with convenient use and high exploration accuracy.It is mainly used in road exploration,building exploration,mineral exploration and so on.The ground penetrating radar system software is the key to the efficient and stable operation of ground penetrating radar equipment.Therefore,the software design of ground penetrating radar system has been a research hotspot in academia.This thesis takes the single-channel pulsed ground penetrating radar system software as the research object,and designs and develops the ground-penetrating radar system software data acquisition module and data pre-processing module.The main research contents are as follows:Firstly,the software functional requirements of the ground penetrating radar system are analyzed and the software solution is designed.The working principle of ground penetrating radar is introduced,including the principle of reflection and refraction of electromagnetic waves and the imaging principle of ground penetrating radar.According to the hardware design of the ground penetrating radar system,the ground penetrating radar system software is divided into upper computer software,communication transfer software and radar drive software.According to the software requirements and performance indicators,the software design scheme of ground penetrating radar system is proposed.The ground penetrating radar system software is divided into data acquisition module and data preprocessing module according to functions.Then,the data acquisition module of the ground penetrating radar system software is designed.The finite state machine of the upper computer software,communication transfer software and radar drive software in the data acquisition module of ground penetrating radar software is analyzed and designed.According to the design of the software finite state machine,the workflows of the above three softwares are analyzed in detail and the cooperation mechanism between the softwares are designed.And the USB-based fast data transmission program is analyzed.The ground penetrating radardata acquisition experiment is carried out to verify whether the data acquisition module of the software meets the design requirements.Finally,the data preprocessing module of the ground penetrating radar system software is designed.The raw data of ground penetrating radar field exploration is preprocessed by comparing experiments.The DC drift removal algorithm,the standing wave removal algorithm,and the median filtering algorithm are used to suppress the clutter.The amplitude of the echo signal is subjected to constant gain processing,spherical exponential gain processing and automatic gain processing to improve the signal strength.Finally,the grayscale image is subjected to pseudo color processing to improve the recognition of the data.