Review of the comprehensive SAR approach to identify scattering mechanisms of radar backscatter from vegetated terrain

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Abstract

In a field of polarimetric synthetic aperture radar (SAR) remote sensing, various kinds of polarimetric decomposition techniques have been proposed. However, poor validations prevent them from operational applications. A true composition ratio of scattering mechanisms within a radar backscatter plays a key role. To overcome the issue, a novel comprehensive SAR approach to accurately identify a contribution of each scattering mechanism has been introduced. This is based on multiparametric SAR observation combined with a numerical model simulation. In this article, a comprehensive SAR approach is concisely reviewed to accelerate the research in this field. First, popular model-based polarimetric decompositions are introduced and their limitations are shown. Then, a behavior of scattering mechanisms is analyzed by the discrete scatterer model with some results using real multiparametric SAR data. A comprehensive SAR approach must be essential to realize an operational use of polarimetric SAR data.

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Arii, M., Yamada, H., Kojima, S., & Ohki, M. (2019). Review of the comprehensive SAR approach to identify scattering mechanisms of radar backscatter from vegetated terrain. Electronics (Switzerland), 8(10). https://doi.org/10.3390/electronics8101098

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