Huang Jian, Li Zhicai, Shi Dongfeng, Chen Yafeng, Yuan Kee, Hu Shunxing, Wang Yingjian
Opt Express. 2022 Oct 10;30(21):37484-37492. doi: 10.1364/OE.471036.
Long-range light detection and ranging (lidar) of active illumination optical imaging has widespread applications, such as remote sensing, satellite-based global topography, and target recognition and identification. Here, to make trade-offs among imaging efficiency, resolution, receiving field of view, divergence angle, and detected distance, we demonstrate a scanning single-pixel imaging lidar (SSPIL), enjoying the merits of the traditional pointing-by-pointing scanning imaging and single-pixel imaging. The imaging strategy of SSPIL is divided into scanning search and staring imaging processes. These strategies can save most time consumption for imaging background areas and thus improve imaging efficiency. Three imaging experiments were conducted in real urban atmospheric conditions. The preliminary results show SSPIL has the ability for long-range imaging with high efficiency, high resolution, and a large receiving field of view. Also, from the imaging results, we found that multiple samples can improve the SNR of imaging in the real urban atmosphere. The present work may provide a valuable alternative approach in the long-range active illumination optical imaging fields.
主动照明光学成像的远距离光探测与测距（激光雷达）有着广泛的应用，如遥感、基于卫星的全球地形测绘以及目标识别与鉴定。在此，为了在成像效率、分辨率、接收视场、发散角和探测距离之间进行权衡，我们展示了一种扫描单像素成像激光雷达（SSPIL），它兼具传统逐点扫描成像和单像素成像的优点。SSPIL的成像策略分为扫描搜索和凝视成像过程。这些策略可以节省对成像背景区域的大部分时间消耗，从而提高成像效率。在真实的城市大气条件下进行了三项成像实验。初步结果表明，SSPIL具有高效、高分辨率和大接收视场的远距离成像能力。此外，从成像结果中我们发现，多个样本可以提高在真实城市大气中的成像信噪比。本工作可能为远距离主动照明光学成像领域提供一种有价值的替代方法。
