宽带宽方位波束对高分辨率SAR辐射定标的影响分析

洪峻 雷大力 王宇 费春娇

洪峻, 雷大力, 王宇, 费春娇. 宽带宽方位波束对高分辨率SAR辐射定标的影响分析[J]. 雷达学报, 2015, 4(3): 276-286. doi: 10.12000/JR15015
引用本文: 洪峻, 雷大力, 王宇, 费春娇. 宽带宽方位波束对高分辨率SAR辐射定标的影响分析[J]. 雷达学报, 2015, 4(3): 276-286. doi: 10.12000/JR15015
Hong Jun, Lei Da-li, Wang Yu, Fei Chun-jiao. Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration[J]. Journal of Radars, 2015, 4(3): 276-286. doi: 10.12000/JR15015
Citation: Hong Jun, Lei Da-li, Wang Yu, Fei Chun-jiao. Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration[J]. Journal of Radars, 2015, 4(3): 276-286. doi: 10.12000/JR15015

宽带宽方位波束对高分辨率SAR辐射定标的影响分析

doi: 10.12000/JR15015
基金项目: 

XXX对地观测系统重大专项(GFZX0403220402)资助课题

详细信息
    作者简介:

    洪峻(1960-),男,中国科学院电子学研究所,研究员,博士生导师,研究方向为SAR定标技术、机载SAR系统设计.E-mail:jhong@mail.ie.ac.cn雷大力(1989-),男,中国科学院大学硕士生,研究方向为高分辨率SAR成像及辐射定标.E-mail:leidali2010@163.com王宇(1976-),男,中国科学院电子学研究所,副研究员,研究方向为机载SAR定标技术.E-mail:wangyu@mail.ie.ac.cn费春娇(1989-),女,中国科学院大学博士生,研究方向为电磁辐射与探测技术.E-mail:iriscelia@163.com

    通讯作者:

    雷大力leidali2010@163.com

Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration

  • 摘要: 无源角反射器和有源定标器是SAR辐射定标的常用人造参考点目标,随着大量新体制、新模式高分辨率SAR系统的涌现,大距离带宽和宽方位波束都对传统观念中参考目标雷达截面积(RCS)近似恒定的假设提出挑战.该文借助FEKO电磁仿真软件获取目标RCS随频带和方位角的变化关系,结合高分辨率SAR点目标仿真,通过点目标能量提取,定量地分析参考目标RCS的频带或方位角相关性对辐射定标的影响.仿真结果表明在Ku波段相对带宽超过10%或方位波束宽度超过20时,上述因素带来的影响超过0.2 dB,必须在实际数据处理中加以校正.

     

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出版历程
  • 收稿日期:  2015-01-26
  • 修回日期:  2015-04-30

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