Study on a Novel Multiple Elevation Beam Technique for HRWS SAR System

Study on a Novel Multiple Elevation Beam Technique for HRWS SAR System
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HRWS SAR系统多仰角波束新技术研究

DOI:
10.1109/jstars.2015.2423493
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发表时间:
2015-05
影响因子:
5.5
通讯作者:
Jiang Qian
Jiang Qian
中科院分区:
工程技术3区
文献类型:
--
作者:
Taoli Yang;Xiaolei Lv;Yong Wang;Jiang Qian

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随着分辨率和成像条带的提高,星载合成孔径雷达(SAR)系统接收数据量越来越大,对卫星载荷和传输链路提出了更高的要求。本文研究了一种新的多仰角波束(MEB)SAR及其处理方案,以减少数据量。文中给出了系统的详细设计方案和主要步骤,并推导出了该方案的数学表达式。最后,以一个典型的合成孔径雷达系统为例,通过仿真验证了该方法的有效性。从数据量、信噪比和距离模糊信噪比等方面对MEB SAR系统的性能进行了深入分析。
With the improvement of resolution and image swath, the received data amount of spaceborne synthetic aperture radar (SAR) system is increasingly large and imposes more stringent requirement for the satellite payload and transmission link. In this paper, a novel multiple elevation beam (MEB) SAR and the processing scheme are studied to reduce the data amount. The detailed system design and the main procedures are described, and the explicit mathematic expression of the scheme is derived. Furthermore, an exemplary SAR system is provided and the simulation results are obtained to confirm the effectiveness of our proposal. Also, the performance of the MEB SAR system is analyzed in depth, from the perspectives of data amount, signal to noise ratio (SNR), and range ambiguity to signal ratio (RASR).
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