星载一维综合孔径微波辐射计海洋盐度探测任务仿真及外部误差源分析
发布时间：2018-12-16 03:08
【摘要】：基于Matlab平台搭建一维综合孔径仿真系统,根据系统的组成结构及工作过程建立模型,主要包括目标场景生成模块、辐射计系统仿真模块和图像重构模块。目标场景生成模块输出天线视在亮温;辐射计系统仿真模块根据综合孔径辐射计测量原理并结合一维天线阵列,生成可见度函数;图像重构模块利用二维天线方向图转换的方法,实现可见度函数到亮温的转换。利用该系统能够仿真太阳和银河在视场中位置的年际变化,评估太阳和银河直射在一年中对系统输出亮温造成的干扰偏差。
[Abstract]:A one-dimensional synthetic aperture simulation system is built based on Matlab platform. According to the structure and working process of the system, the model is built, including the target scene generation module, radiometer system simulation module and image reconstruction module. The target scene generation module outputs the visible temperature of the antenna, the radiometer system simulation module generates visibility function according to the measurement principle of the synthetic aperture radiometer and the one-dimensional antenna array. The image reconstruction module realizes the conversion from visibility function to bright temperature by using the method of 2D antenna pattern conversion. The system can simulate the interannual variation of the solar and galactic position in the field of view, and evaluate the interference deviation caused by the solar and galactic direct emission to the output brightness temperature of the system in one year.
【作者单位】： 中国科学院国家空间科学中心中国科学院微波遥感技术重点实验室;中国科学院大学;中国空间技术研究院总体部遥感中心;中国科学院遥感与数字地球研究所;
【基金】：中国科学院青年创新促进会资助
【分类号】：P715.7
本文编号：2381736
[Abstract]:A one-dimensional synthetic aperture simulation system is built based on Matlab platform. According to the structure and working process of the system, the model is built, including the target scene generation module, radiometer system simulation module and image reconstruction module. The target scene generation module outputs the visible temperature of the antenna, the radiometer system simulation module generates visibility function according to the measurement principle of the synthetic aperture radiometer and the one-dimensional antenna array. The image reconstruction module realizes the conversion from visibility function to bright temperature by using the method of 2D antenna pattern conversion. The system can simulate the interannual variation of the solar and galactic position in the field of view, and evaluate the interference deviation caused by the solar and galactic direct emission to the output brightness temperature of the system in one year.
【作者单位】： 中国科学院国家空间科学中心中国科学院微波遥感技术重点实验室;中国科学院大学;中国空间技术研究院总体部遥感中心;中国科学院遥感与数字地球研究所;
【基金】：中国科学院青年创新促进会资助
【分类号】：P715.7
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相关硕士学位论文 前3条
1 金梦彤;星载L波段一维综合孔径辐射计海洋盐度探测任务仿真[D];中国科学院国家空间科学中心;2016年
2 张铁男;高精度与高稳定性卫星海洋盐度辐射计设计[D];哈尔滨工业大学;2014年
3 邢洋;综合孔径辐射计数字系统的研究与设计[D];北京理工大学;2015年
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