Experimental SAR measurements for electronic travel aid purposes

The performance of a novel ultra-compact Artificial Magnetic Conductor (AMC)-backed Twin Arrow antenna, operative in the 24 GHz frequency band, have been test for an electronic travel aid (ETA) system. Synthetic Aperture Radar (SAR) techniques for high-resolution electromagnetic imaging have been implemented by taking advantage of the natura movement of the user’s body. Experimental measurements for electronic travel aid purposes were conducted by generating electromagnetic images of the surrounding environment. The antenna is moved by means of simple arm swings. The measurement point interval was recorded with a tracking camera and the scattering parameter S is measured with a vector network analyzer (VNA), in order to emulate a stepped-frequency continuous-wave (SFCW) radar. The measurement data is provided. 

本数据集针对一款工作于24吉赫兹（GHz）频段的新型超紧凑型人工磁导体（Artificial Magnetic Conductor, AMC）背衬双箭形天线的性能完成测试，该天线应用于电子助行装置（electronic travel aid, ETA）系统。研究借助使用者身体的自然运动，实现了面向高分辨率电磁成像的合成孔径雷达（Synthetic Aperture Radar, SAR）技术。为适配电子助行装置的应用场景，研究团队通过生成周围环境的电磁图像开展了相关实验测量。该天线通过简单的手臂摆动实现移动。实验中利用跟踪相机记录测量点间距，并通过矢量网络分析仪（vector network analyzer, VNA）测量散射参数S，以模拟步进频率连续波（stepped-frequency continuous-wave, SFCW）雷达的工作模式。本次实验的测量数据已随数据集提供。