The GPU implementation of micro - Doppler period estimation

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Yang, Liyuan^1 ; Wang, Junling^1 ; Bi, Ran^1

School of Beijing Institute of Technology University, Beijing, China^1

关键词: Inverse Radon transforms;    Joint time-frequency analysis;    Micro-Doppler effect;    Orbiting satellites;    Parallel structures;    Real-time extraction;    Realtime processing;    Translational motions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/7/072007/pdf
DOI  :  10.1088/1757-899X/322/7/072007

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Aiming at the problem that the computational complexity and the deficiency of real-time of the wideband radar echo signal, a program is designed to improve the performance of real-time extraction of micro-motion feature in this paper based on the CPU-GPU heterogeneous parallel structure. Firstly, we discuss the principle of the micro-Doppler effect generated by the rolling of the scattering points on the orbiting satellite, analyses how to use Kalman filter to compensate the translational motion of tumbling satellite and how to use the joint time-frequency analysis and inverse Radon transform to extract the micro-motion features from the echo after compensation. Secondly, the advantages of GPU in terms of real-time processing and the working principle of CPU-GPU heterogeneous parallelism are analysed, and a program flow based on GPU to extract the micro-motion feature from the radar echo signal of rolling satellite is designed. At the end of the article the results of extraction are given to verify the correctness of the program and algorithm.