针对雷达载体船运动导致的图像畸变问题，分别分析高速直航运动和回转运动情况下目标成像畸变的原因；仿真分析相关参数对图像畸变带来的影响，并计算与运动参数相关的目标图像畸变补偿公式；提出目标雷达图像畸变补偿的应用算法。该算法包括目标检测、运动补偿和目标图像校正。通过湖上试验，采用目标图像畸变补偿后的目标定位精度指标按直航和回转运动分别提升了33.13%和47.38%，进而提升水面舰艇的感知能力。
Aiming at the image aberration problem caused by the motion of radar carrier ship, the causes of target imaging aberration in the case of high-speed direct motion and slewing motion are analyzed respectively, quantitative simulation analyzes the influence of relevant parameters on image aberration, and calculates the target image aberration compensation formula related to the motion parameters, and proposes an application algorithm for target radar image aberration compensation. The algorithm includes three parts: target detection, motion compensation and target image correction. Through the actual test on the lake, the target localization accuracy index after using target image distortion compensation is improved by 33.13% and 47.38% according to the straight and slewing motions respectively, which in turn improves the perception ability of surface ships.
2024,46(24): 97-103 收稿日期：2023-12-1
DOI：10.3404/j.issn.1672-7649.2024.24.017
分类号：TP212
基金项目：海洋创新研究院资助项目（CXBS202102）
作者简介：王太杰(1996-),男,硕士,研究方向为水面机器人环境感知
参考文献：
[1] LI D, LI X, CHENG Y, et al. Radar coincidence imaging in the presence of target-motion-induced error[J]. Journal of Electronic Imaging, 2014, 23(2): 023014-023014.
[2] QU Y, SONG Z, SHI L, et al. Moving target detection for FMCW radar[C]//Proceedings of 2011 IEEE CIE International Conference on Radar. IEEE, 2011, 2: 1756-1759.
[3] JIA G, CHANG W, ZHANG Q, et al. The analysis and realization of motion compensation for circular synthetic aperture radar data[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016, 9(7): 3060-3071.
[4] 李继刚, 王剑. X波段导航雷达测波的运动补偿[J]. 海洋技术, 2006(1): 31-34.
[5] 黄越, 郁汉琪, 陆宇豪. 激光雷达数学模型及运动畸变去除[J]. 仪器仪表用户, 2021, 28(11): 9-11+71.
[6] 黎湘. 复杂运动目标雷达成像研究进展[J]. 中国科学: 信息科学, 2021, 51(2): 305-324.
[7] DING L, GOSHTASBY A. On the canny edge detector[J]. Pattern Recognition, 2001, 34(3): 721-725.
[8] 王静, 王海亮, 向茂生, 等. 基于非极大值抑制的圆目标亚像素中心定位[J]. 仪器仪表学报, 2012, 33(7): 1460-1468.
[9] YANG H, QI S, CHAO W, et al. Image analysis by log-polar Exponent-Fourier moments[J]. Pattern Recognition, 2020, 101: 107177.
