为了保障海域船舶航行安全，提出船舶导航雷达临近空间低动态目标跟踪方法。利用船舶导航雷达探测临近空间低动态目标，获取量测点迹数据，分析低动态飞行器运动对其量测值的影响，根据最小二乘滤波原理，设计基于衰减记忆的最小二乘滤波器，将量测点迹数据转换到雷达直角坐标系上，根据衰减记忆选择量测点迹数据，将其作为基于衰减记忆的最小二乘滤波器的输入数据，确定低动态目标跟踪轨迹坐标，再将其转换到雷达极坐标系上，实现临近空间低动态目标跟踪。实验结果表明，该方法可实现匀速、匀加速运动下临近空间低动态目标跟踪，跟踪轨迹与实际航迹基本重合，其在X、Y、Z方向上的距离均方根误差远低于量测数据均方根误差。
In order to ensure the navigation safety of ships in the sea area, a low dynamic target tracking method in the near space of ship navigation radar is proposed. The ship navigation radar is used to detect low-dynamic targets in the near space, and the measured point trace data is obtained. The influence of low-dynamic aircraft motion on its measured values is analyzed. According to the principle of least square filtering, a least square filter based on attenuation memory is designed, and the measured point trace data is converted to the radar rectangular coordinate system. The measured point trace data is selected according to attenuation memory, which is used as the input data of the least square filter based on attenuation memory, and the tracking coordinates of low-dynamic targets are determined, and then converted to the radar polar coordinate system to realize the tracking of low-dynamic targets in the near space. The experimental results show that this method can realize the tracking of low dynamic targets in the near space under uniform and uniform acceleration motion, and the tracking trajectory basically coincides with the actual trajectory, and the root mean square error of the distance in X, Y and Z directions is much lower than that of the measured data.
2024,46(6): 140-143 收稿日期：2023-12-22
DOI：10.3404/j.issn.1672-7649.2024.06.024
分类号：TN957
作者简介：王群朋(1987-),男,硕士,讲师,研究方向为航海气象与海上交通安全保障
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