光学学报, 2010, 30 (s1): s100510, 网络出版: 2010-12-22
一种新型的空中运动目标信息获取算法的研究
Research on a New Air Moving Target Information Acquisition Algorithm
探测 目标信息获取算法 空中运动目标 大气风场 激光雷达 detection target information acquisition algorithm air moving target atmosphere wind field lidar
摘要
针对空中运动目标雷达截面积小、速度快的特点以及雷达、红外等常规目标探测手段探测效果差、探测效率低的现状,提出了一种基于激光雷达探测风场扰动来获取空中运动目标信息的算法,给出了基于风场扰动的运动目标信息获取的基本原理和主要流程。基于接收大气反射的激光回波信号,通过径向和水平风速反演算法获得扫描区域内的风场分布;滤除背景风场影响获得扰动风场分布,并结合运动目标信息获取算法完成目标的位置、属性等信息获取。实验表明,基于该算法获取目标位于径向距离800 m,仰角82°处的结论与实际情况基本吻合,从而验证了该新型目标探测手段切实可行,为未来空中运动目标的高效探测发现提供了一种崭新的途径。
Abstract
Based on the characteristics of small radar cross section, high speed of air moving target, the existing condition of shitty target detection effect and low detection efficiency of those conventional radar and infrared means, a new algorithm of acquiring air moving target information based on wind field disturbance detected by lidar is proposed. The basic principle and main process of moving target information acquisition based on wind field disturbance is given. Through receiving the laser echo signal reflected by atmosphere and the retrieval algorithm of radial and horizontal wind speed, the wind field distribution in scanning area can be acquired. Meanwhile, the disturbance wind field can be acquired by filtering background wind field, the location and attribute of target can also be obtained based on the moving target information acquisition algorithm. The experimental result shows that the target location is the radial distance of 800 m and the pitching angle of 82°drawn by this algorithm is the same as the practical situation. Consequently, this new means of target detection is practicable, which will offer a brand-new path of detecting and discovering air moving target efficiently in the future.
吴永华, 胡以华, 顾有林, 张林虎, 徐世龙. 一种新型的空中运动目标信息获取算法的研究[J]. 光学学报, 2010, 30(s1): s100510. Wu Yonghua, Hu Yihua, Gu Youlin, Zhang Linhu, Xu Shilon. Research on a New Air Moving Target Information Acquisition Algorithm[J]. Acta Optica Sinica, 2010, 30(s1): s100510.