基于扩展OTSM图的滑动型散射中心建模方法

胡杰民; 陈锡清; 邹博; 蔡伟柯

doi:10.11999/JEIT220838

基于扩展OTSM图的滑动型散射中心建模方法

doi: 10.11999/JEIT220838

1.
浙江理工大学杭州 300162
2.
陆航学院北京 101121
3.
国防科学技术大学陆军航空兵研究所长沙 410073

基金项目: 国防科技重点实验室基金(WDZC20205500208)

详细信息

作者简介:
胡杰民：男，教授，主要研究方向为雷达成像、雷达信号处理、雷达目标特性分析等

陈锡清：男，硕士生，主要研究方向为雷达目标特性分析

邹博：男，高级工程师，主要研究方向为陆航信息化、航电系统、目标特性建模等

蔡伟柯：男，高级工程师，主要研究方向为遥感信息处理、SAR图像解译等

通讯作者:
陈锡清　370401482@qq.com

中图分类号: TN95
计量
- 文章访问数: 247
- HTML全文浏览量: 130
- PDF下载量: 73
- 被引次数: 0
出版历程
- 收稿日期: 2022-06-23
- 修回日期: 2022-11-14
- 网络出版日期: 2022-11-16
- 刊出日期: 2023-08-21

Modeling Method of Sliding Scattering Center Based on Extended OTSM Graph

1.
Zhejiang Sci-Tech University, Hangzhou 30016, China
2.
Institute of land aviation, Beijing 101121, China
3.
National University of Defense Technology, Changsha 410073, China

Funds: Key Laboratory of National Defense Science and Technology Fundation (WDZC20205500208)

摘要

摘要: 雷达目标散射中心建模是雷达目标特性分析与雷达目标识别中的关键步骤，光滑流线型结构在雷达目标上的广泛应用，给传统散射中心建模带来了巨大挑战。该文针对滑动散射中心建模开展研究，首先分别基于曲面边缘散射和曲面散射两种情况，推导了滑动散射中心的位置表达式；其次，提出一种基于扩展1维-高维(2维/3维)散射映射图(One–Two/Three Dimensional Scattering Mapping, OTSM)的滑动散射中心估计方法，通过相邻视角的投影几何关系推导滑动散射中心的位置；然后，综合RANSAC算法获取的固定散射中心，获得目标完备的散射中心模型。利用暗室测量数据对算法进行了验证，结果表明了该文算法的有效性。
- 滑动散射中心 /
- 扩展OTSM图 /
- 散射中心建模 /
- 特征提取
Abstract: Modeling of radar target scattering center is a key step in radar target characteristic analysis and radar target recognition. The wide application of smooth streamlined structure to radar target brings great challenges to traditional scattering center modeling. This paper focuses on the modeling of the sliding scattering center. Firstly, the position expression of the sliding scattering center is deduced based on the two cases of surface edge scattering and surface scattering respectively. Secondly, a sliding scattering center estimation method based on extended OTSM map is proposed. The location of the sliding scattering center is derived from the projection geometry of adjacent perspectives. Then, combined with the fixed scattering centers obtained by RANSAC algorithm, the complete scattering center model of the target is obtained. The algorithm is verified by the experiment results of the anechoic chamber data, which demonstrate the effectiveness of the proposed method.
- Sliding Scattering Centers(SSC) /
- Extension OTSM map /
- Scattering centers modeling /
- Feature extraction

HTML全文

图 1 典型滑动散射中心结构

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图 2 固定散射中心OTSM图

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图 3 滑动散射中心的扩展OTSM图

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图 4 不同视角下的投影直线

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图 5 雷达目标散射中心建模流程图

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图 6 暗室目标实物图

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图 7 原始数据的高分辨距离像

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图 8 全姿态1D SC距离像

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图 9 曲面型滑动散射中心拟合结果

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图 10 散射中心模型比较

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图 11 原始数据与重构数据比较

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图 12 原始数据的采样场景图

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图 13 原始数据的高分辨距离

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图 14 全姿态1D SC距离像图

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图 15 曲线型滑动散射中心位置分布

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图 16 锥台体散射中心模型比较

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图 17 原始数据与重构数据比较

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