多通道逆合成孔径激光雷达成像探测技术和实验研究

personking

出自：激光与光电子学进展, 2021, 58(18): 1811017
作者：李道京 周凯 崔岸婧 等
作者单位

中国科学院空天信息创新研究院微波成像技术国家级重点实验室, 北京1001902
中国科学院大学, 北京1000493
中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033
摘要
合成孔径激光雷达是实现计算成像的一种重要途径。首先,介绍了多通道逆合成孔径激光雷达(ISAL)样机、成像探测实验及信号处理方法。然后,阐述了样机系统组成和关键技术解决途径。接着,利用基于一发多收脉冲体制和全光纤光路的相干激光雷达样机,给出了地面运动车辆目标的成像探测实验结果。最后,在收发扩束宽视场条件下,验证了多通道ISAL的高分辨率成像能力和顺轨干涉运动补偿成像方法的有效性。

Abstract
Synthetic aperture ladar is an important way to realize computational imaging.Firstly, a multi-channel inverse synthetic aperture ladar (ISAL) prototype, imaging detection experiment and signal processing method are introduced. Then, the composition of the prototype system and key technical solutions are described. Moreover, the experimental results of imaging detection of moving vehicle targets on ground are given by a coherent ladar prototype based on a one-transmit multiple-receive pulse system and an optical path with all fiber. Finally, under the wide view field conditions of expanding transmitting and receiving beams, the high-resolution imaging capabilities of multi-channel ISAL and the effectiveness of the along-track interferometry motion compensation imaging method are verified.