星載一維綜合孔徑微波輻射計(jì)海洋鹽度探測任務(wù)仿真及外部誤差源分析
發(fā)布時(shí)間:2018-12-16 03:08
【摘要】:基于Matlab平臺(tái)搭建一維綜合孔徑仿真系統(tǒng),根據(jù)系統(tǒng)的組成結(jié)構(gòu)及工作過程建立模型,主要包括目標(biāo)場景生成模塊、輻射計(jì)系統(tǒng)仿真模塊和圖像重構(gòu)模塊。目標(biāo)場景生成模塊輸出天線視在亮溫;輻射計(jì)系統(tǒng)仿真模塊根據(jù)綜合孔徑輻射計(jì)測量原理并結(jié)合一維天線陣列,生成可見度函數(shù);圖像重構(gòu)模塊利用二維天線方向圖轉(zhuǎn)換的方法,實(shí)現(xiàn)可見度函數(shù)到亮溫的轉(zhuǎn)換。利用該系統(tǒng)能夠仿真太陽和銀河在視場中位置的年際變化,評(píng)估太陽和銀河直射在一年中對(duì)系統(tǒng)輸出亮溫造成的干擾偏差。
[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.
【作者單位】: 中國科學(xué)院國家空間科學(xué)中心中國科學(xué)院微波遙感技術(shù)重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);中國空間技術(shù)研究院總體部遙感中心;中國科學(xué)院遙感與數(shù)字地球研究所;
【基金】:中國科學(xué)院青年創(chuàng)新促進(jìn)會(huì)資助
【分類號(hào)】:P715.7
本文編號(hào):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.
【作者單位】: 中國科學(xué)院國家空間科學(xué)中心中國科學(xué)院微波遙感技術(shù)重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);中國空間技術(shù)研究院總體部遙感中心;中國科學(xué)院遙感與數(shù)字地球研究所;
【基金】:中國科學(xué)院青年創(chuàng)新促進(jìn)會(huì)資助
【分類號(hào)】:P715.7
【相似文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前3條
1 金夢彤;星載L波段一維綜合孔徑輻射計(jì)海洋鹽度探測任務(wù)仿真[D];中國科學(xué)院國家空間科學(xué)中心;2016年
2 張鐵男;高精度與高穩(wěn)定性衛(wèi)星海洋鹽度輻射計(jì)設(shè)計(jì)[D];哈爾濱工業(yè)大學(xué);2014年
3 邢洋;綜合孔徑輻射計(jì)數(shù)字系統(tǒng)的研究與設(shè)計(jì)[D];北京理工大學(xué);2015年
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