Range-Time Backprojection for 3D Shape Estimation of Small Space Debris
A coherent backprojection based approach is presented for 3D shape estimation of small debris in space. The approach utilizes the fact that space debris is in high-speed spinning motion.Making use of the modulated range envelope and Doppler spreading,a backprojection maps the data into a three-dimensional parameter domain,and the spatial coordinates of scatterers can be extracted to reconstruct 3D shape.In most of recent papers on the imaging of space debris or rotating targets,the rotation from the translational motion is assumed to be neglectable,while in our approach the backprojection is combined with a Fourier transform to deal with the rotation of translational motion and full coherent accumulation can be achieved. The approach is robust in the occurrence of serious profile overlapping and strong noise.Simulations confirm its validity and good performance.
radar imaging space debris 3D shape estimation general Radon transform backprojection
Shichao Chen Lei Zhang Mengdao Xing Cheng-Wei Qiu Zheng Bao
National Key Lab for Radar Signal Processing,Xidian University,Xian,710071,P.R.China Radar and Signal Processing Lab,National University of Singapore,Republic of Singapore 117576
国际会议
2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)
西安
英文
642-646
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）