兰州理工大学学报 ›› 2021, Vol. 47 ›› Issue (4): 99-105.

• 自动化技术与计算机技术 • 上一篇    下一篇

高频地波雷达电离层距离方程建模及仿真

杨永锋*1, 杨旭光1, 尚尚2, 于长军3   

  1. 1.陇东学院 信息工程学院, 甘肃 庆阳 745000;
    2.江苏科技大学 电子信息学院, 江苏 镇江 212003;
    3.哈尔滨工业大学(威海) 信息与电气工程学院, 山东 威海 294209
  • 收稿日期:2021-03-01 出版日期:2021-08-01 发布日期:2021-09-07
  • 通讯作者: 杨永锋(1982-),男,甘肃环县人,硕士,讲师.Email:yangxghit@163.com
  • 基金资助:
    国家自然科学基金(62061026,61801141,61801196,61971159)

Modeling and simulation of ionospheric range equation for high frequency surface radar

YANG Yong-feng1, YANG Xu-guang1, SHANG Shang2, YU Chang-jun3   

  1. 1. School of Information Engineering, Longdong University, Qingyang 745000, China;
    2. School of Electronic Information, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    3. School of Information and Electrical Engineering, Harbin Institute of Technology(Weihai), Weihai 294209, China
  • Received:2021-03-01 Online:2021-08-01 Published:2021-09-07

摘要: 针对电离层的空间分布特征,构建了体目标和面目标的雷达距离方程.根据不规则体对高频电波的相干散射原理,估算了电离层RCS的散射系数,进而给出基于电离层物理机制的广义高频地波雷达方程,从而量化了电离层特征参数对高频雷达系统的影响.通过仿真发现,对于面散射情形,斜向散射电离层杂波符合波束限制模型,垂直向的电离层杂波符合脉冲限制模型;对于体散射,影响电离层杂波强度最主要的因素是不规则体波动幅度.

关键词: 高频地波雷达, 电离层, 雷达距离方程, 面散射, 体散射

Abstract: The distributed radar range equations of volume target and surface target are established, according to the unique distribution characteristics of ionosphere, and the scattering coefficient of the ionospheric RCS is estimated based on the principle of high frequency coherent scattering for irregularities. Thus, the generalized radar formula based on the physical mechanism of the ionosphere is derived, quantizing the impact of ionospheric characteristic parameters on HF radar system. Simulation results show that the near-vertical ionospheric echo conforms to the pulse-limited model, and the oblique ionospheric echo conforms to the beam-limited model, for the case of surface scattering with wide beam in HF surface wave radar. For volume scattering, the most important factor affecting the ionospheric clutter intensity is the amplitude of irregularities fluctuation.

Key words: HF surface wave radar, ionosphere, radar range equation, surface scattering, volume scattering

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