徐志达,程春泉,杨书成,谭建伟

• 1:山东科技大学测绘科学与工程学院
• 2:中国测绘科学研究院

摘要(Abstract)：

针对机载SAR影像的高精度辐射定标处理问题,该文分别利用积分法与峰值法计算点目标辐射响应能量、通过对SAR影像辐射特征分析及方法对比,采用sin c函数模型拟合校正天线方向图,结合雷达功率方程求解定标常数,进而建立了完整的点目标辐射定标方法和流程,并对关键技术中不同方法进行了比较分析。结果表明,积分法能量计算模型与sin c函数天线方向图校正模型结合的定标方法能够达到更高的相对和绝对定标精度,优化后的方法能够满足并高于高分辨率机载SAR应用对辐射定标精度的要求。

关键词(KeyWords)： 机载SAR;辐射定标;天线方向图;积分法;峰值法

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2018YFF0215303);; 中国测绘科学研究院基本科研业务费项目(7771808)

作者(Author): 徐志达,程春泉,杨书成,谭建伟

DOI: 10.16251/j.cnki.1009-2307.2020.05.011

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