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基于电磁模型的宽带雷达海杂波信号建模与分析

王童 童创明 许光飞 彭鹏 王宜进

王童, 童创明, 许光飞, 彭鹏, 王宜进. 基于电磁模型的宽带雷达海杂波信号建模与分析[J]. 电子与信息学报, 2022, 44(4): 1358-1365. doi: 10.11999/JEIT210180
引用本文: 王童, 童创明, 许光飞, 彭鹏, 王宜进. 基于电磁模型的宽带雷达海杂波信号建模与分析[J]. 电子与信息学报, 2022, 44(4): 1358-1365. doi: 10.11999/JEIT210180
WANG Tong, TONG Chuangming, XU Guangfei, PENG Peng, WANG Yijin. Modeling and Analysis of Sea-clutter Signal for Wide-band Radar Based on Electromagnetic Model[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1358-1365. doi: 10.11999/JEIT210180
Citation: WANG Tong, TONG Chuangming, XU Guangfei, PENG Peng, WANG Yijin. Modeling and Analysis of Sea-clutter Signal for Wide-band Radar Based on Electromagnetic Model[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1358-1365. doi: 10.11999/JEIT210180

基于电磁模型的宽带雷达海杂波信号建模与分析

doi: 10.11999/JEIT210180
基金项目: 国家自然科学基金(61901510);陕西省自然科学基础研究计划(2021JQ-365)
详细信息
    作者简介:

    王童:男,1988年生,讲师,研究方向为目标与环境电磁散射特性、雷达回波模拟与成像

    童创明:男,1964年生,教授,主要研究方向为计算电磁学、电磁散射逆散射与目标识别、微波成像等

    许光飞:男,1985年生,助理研究员,研究方向为通信对抗、仿真试验

    彭鹏:男,1982年生,讲师,研究方向为目标特性与雷达信号处理

    王宜进:男,1994年生,博士生,研究方向为目标与环境电磁散射特性

    通讯作者:

    王童 tong_wang001@163.com

  • 中图分类号: TN959.72; TN011

Modeling and Analysis of Sea-clutter Signal for Wide-band Radar Based on Electromagnetic Model

Funds: The National Natural Science Foundation of China (61901510), The Natural Science Basic Research Program of Shaanxi Province (2021JQ-365)
  • 摘要: 该文针对时变海洋面雷达回波信号模拟问题,建立了一种包含电磁散射机理与雷达波形调制特征的海杂波雷达回波信号模型。该模型首先建立一组具有时变特征的海面几何样本,通过对改进双尺度面元模型的加速处理,实现各时刻海面散射数据的高效模拟,并通过与测试数据的对比证实了电磁计算方法的准确性,然后采用子脉冲形式建立宽带回波信号模型,并以各面元散射数据代替其复幅度从而完成雷达回波信号建模。通过仿真验证了模型的合理性与高效性,对海杂波数据的统计分析展示了脉冲压缩处理对杂波的抑制效果。该海杂波模型既考虑了海洋的复杂散射机理与运动特性,又具有一般宽带信号的形式,因此可同时为海洋散射现象的解释和信号处理算法的分析提供完备数据源。
  • 图  1  时变海面轮廓

    图  2  面元散射示意图

    图  3  宽带雷达回波示意图

    图  4  海面后向散射仿真

    图  5  电磁模型仿真与验证

    图  6  脉冲压缩前宽带海杂波统计特性

    图  7  宽带海杂波不同时刻的1维距离像

    图  8  脉冲压缩前后宽带海杂波的统计特性

    表  1  仿真参数与计算时间

    面元模型粗糙面尺寸(m2)面元尺寸(m)计算时间(s)
    传统双尺度200×2000.5136
    改进双尺度200×2002134
    本文模型200×200236
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-03-01
  • 修回日期:  2021-10-25
  • 录用日期:  2021-11-05
  • 网络出版日期:  2021-11-13
  • 刊出日期:  2022-04-18

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