This article studies the compressed sensing (CS) technique applied in the THz linear sparse periodic array (SPA) imaging system, proposing the corresponding image reconstruction model. The THz-SPA imaging system has been tested in electromagnetic (EM) simulation, and then experimentally verified by using a simplified set-up that only uses one transmitting channel and one receiving channel. The reconstructed images based on both simulation and experimental data have demonstrated the feasibility of CS reconstruction for reducing sampling data but maintaining comparable image quality as the traditional generalised synthetic aperture focusing technique.

中文翻译：

---

使用压缩传感的太赫兹稀疏周期阵列成像系统

本文研究了在THz线性稀疏周期阵列（SPA）成像系统中应用的压缩传感（CS）技术，提出了相应的图像重建模型。THz-SPA成像系统已经在电磁（EM）模拟中进行了测试，然后通过使用仅使用一个发射通道和一个接收通道的简化设置进行了实验验证。基于仿真和实验数据的重建图像已经证明了CS重建在减少采样数据但保持与传统广义合成孔径聚焦技术相当的图像质量方面的可行性。