Compressed Sensing for THz FMCW Radar 3D Imaging

Shanshan Gu, Guangrong Xi, Lingyu Ge, Zhong Yang, Yizhi Wang, Weina Chen, Zhenzhong Yu
2021 Complexity  
A terahertz (THz) frequency-modulated continuous wave (FMCW) imaging radar system is developed for high-resolution 3D imaging recently. Aiming at the problems of long data acquisition periods and large sample sizes for the developed imaging system, an algorithm based on compressed sensing is proposed for THz FMCW radar 3D imaging in this paper. Firstly, the FMCW radar signal model is built, and the conventional range migration algorithm is introduced for THz FMCW radar imaging. Then, compressed
more » ... sensing is extended for THz FMCW radar 3D imaging, and the Newton smooth L0-norm (NSL0) algorithm is presented for sparse measurement data reconstruction. Both simulation and measurement experiments demonstrate the feasibility of reconstructing THz images from measurements even at the sparsity rate of 20%.
doi:10.1155/2021/5576782 doaj:bffcfea34f0d406d82acea7540371985 fatcat:myoynqjlcfcrxjdqe4u4x4ef7y