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海洋二号卫星微波散射计自然扩展目标在轨定标

朱金台 董晓龙 王磊

朱金台, 董晓龙, 王磊. 海洋二号卫星微波散射计自然扩展目标在轨定标[J]. 空间科学学报, 2015, 35(2): 244-252. doi: 10.11728/cjss2015.02.244
引用本文: 朱金台, 董晓龙, 王磊. 海洋二号卫星微波散射计自然扩展目标在轨定标[J]. 空间科学学报, 2015, 35(2): 244-252. doi: 10.11728/cjss2015.02.244
Zhu Jintai, Dong Xiaolong, Wang Lei. In-orbit calibration of Haiyang-2 scatterometer using natural land-extended targets[J]. Journal of Space Science, 2015, 35(2): 244-252. doi: 10.11728/cjss2015.02.244
Citation: Zhu Jintai, Dong Xiaolong, Wang Lei. In-orbit calibration of Haiyang-2 scatterometer using natural land-extended targets[J]. Journal of Space Science, 2015, 35(2): 244-252. doi: 10.11728/cjss2015.02.244

海洋二号卫星微波散射计自然扩展目标在轨定标

doi: 10.11728/cjss2015.02.244
基金项目: 国家自然科学基金项目资助(41206167)
详细信息
  • 中图分类号: V443;TP732.1

In-orbit calibration of Haiyang-2 scatterometer using natural land-extended targets

  • 摘要: 海洋二号卫星微波散射计(HY-2 Scatterometer, HY-2 SCAT)是一种旋转扫描笔形波束散射计, 能够对同一观测面元提供4次方位角和入射角的观测组合, 并通过地球物理模型反演海面风场. 为达到设计的风场反演精度, 要求其系统定标精度达到0.5dB. 利用不同区域自然扩展目标对HY-2 SCAT进行在轨外定标, 并与OSCAT散射计在同时期内的测量结果进行了对比. 定标结果显示可以消除因散射计天线指向偏差带来的方位向测量误差. 针对HY-2 SCAT方位向测量偏差进行了误差分析, 利用仿真方法以及海洋二号卫星雷达高度计同期测量数据的反演结果进行比对, 验证了误差来源.

     

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出版历程
  • 收稿日期:  2014-03-03
  • 修回日期:  2014-10-17
  • 刊出日期:  2015-03-15

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