SAR Internal Calibration Technology Study
SAR Internal Calibration Technology Study
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DOI：
10.1109/iccit.2009.64
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发表时间：
2009-11
期刊：
影响因子：
--
通讯作者：
Huaining Liang
中科院分区：
文献类型：
--
作者：
Huaining Liang
星载SAR系统离不开SAR内部标定（SIC）技术。总的来说，SIC技术包括内部校准（IC）理论、IC策略和高稳定性IC仪器。相控阵天线SAR系统的IC任务在很多方面都比TWT（行波管）发射机SAR系统复杂，例如： 、T/R模块测试、IC三环建设及IC数据处理。然而，这两个系统之间有很多相似之处。本文仅讨论基于TWT发射机SAR系统的SIC的基本理论和内部校准数据的处理过程。进一步对SIC进行精度分析。最后，我们基于实验SAR图像证明了所提方法的有效性。
The SAR Internal Calibration (SIC) technique is indispensable for a spaceborne SAR system. In general, the SIC technique includes Internal Calibration (IC) theory, IC strategy and highly stable IC instrument. The IC task of phased array antenna SAR system is more complicated than that of TWT (Traveling Wave Tube) transmitter SAR system in many aspects, e.g. , T/R modules test, IC three loops construction and the process of IC data. However, there are lots of similarities between the two systems. In this paper, we only discuss the basic theory of the SIC based on the TWT transmitter SAR system and the process of the internal calibration data. Further, the precision analysis of the SIC will be given. Finally, we demonstrate the effectiveness of the proposed method based on the experimental SAR image.