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Alternative TitleSimulation of Radiometric Calibration of Spaceborne SAR by Amazon Rainforest
陶鹍; 张云华; 郭伟; 云日升; 康雪艳; 北京8701信箱
Source Publication空间科学学报
Keyword星载sar辐射定标 俯仰向天线方向图在轨测试 功率仿真
Other AbstractRadiometric calibration is a powerful means to quantify the SAR (Synthetic Aperture Radar) system performance. Compared with that before launching,there is a considerable distortion of the antenna elevation pattern after the spaceborne SAR is in orbit, which will debase the quality of SAR images greatly. An accurate measurement of the antenna elevation pattern is an important aspect of spaceborne SAR radiometric calibration.The external calibration of distributed targets based on the uniform backscattering is an optimal choice to measure the double-way antenna ele-vation pattern. Amazon rainforest is the most stable, most uniform and flattest distribute external target in the world. With a backscattering almost independent of the incidence, Amazon rainforest is regarded as an ideal radiometric calibration site. However, because the SAR data sets collected by our own spaceborne SAR are still unavailable at present, the estimation of unknown parameters of SAR antenna pattern model based on the simulated spaceborne SAR power image has been inves-tigated in this paper. A successful computer simulation of how to determine the antenna elevation pattern in orbit by simulated Amazon rainforest SAR power images has been made, which is signifi-cant for the radiometric calibration of spaceborne SAR in our country.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
陶鹍,张云华,郭伟,等. 星载SAR亚马逊雨林辐射定标仿真研究[J]. 空间科学学报,2006,26(4):309-314.
APA 陶鹍,张云华,郭伟,云日升,康雪艳,&北京8701信箱.(2006).星载SAR亚马逊雨林辐射定标仿真研究.空间科学学报,26(4),309-314.
MLA 陶鹍,et al."星载SAR亚马逊雨林辐射定标仿真研究".空间科学学报 26.4(2006):309-314.
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