Azimuth Ambiguity in Quad-Pol SAR from the Perspective of Target Decomposition
Conference: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
03/29/2021 - 04/01/2021 at online
Proceedings: EUSAR 2021
Pages: 5Language: englishTyp: PDF
Authors:
Li, Peng; Zhao, Pengfei (Department of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China & School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, China)
Liu, Xiuqing; Liu, Dacheng (Department of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China)
Abstract:
In this paper, a new perspective from target decomposition is proposed to analyze the azimuth ambiguities in conventional and hybrid quad-pol SAR. First, the scattering matrix of azimuth ambiguities in quad-pol SAR is derived. Then, the formulas of azimuth ambiguity to signal ratio for the three polarization components after Pauli decomposition are given. In addition, the azimuth ambiguity performance of hybrid and conventional quad-pol SAR in the new perspective are compared so that some new conclusions are drawn. Furthermore, the correctness of the conclusions is validated by simulation and real GF-3 data.