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Oceanic surface XTI SAR simulation for TOPS imaging mode
Author(s): Shuang Wu; Yuxin Hou; Haifeng Huang; Xiaoqing Wang
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Paper Abstract

This paper presents a simulation of cross-track interferometry (XTI) for TOPS imaging mode with moving sea surface, which includes ocean scene modeling, raw data simulation and interferometric processing. An interferometric elevation of oceanic surface with TOPS imaging mode is acquired during the simulation. Due to the random motion of the oceanic surface, a model of time-domain raw data generation is established to update the normalized radar cross section (NRCS) and the height of the oceanic surface at each azimuth time. For the TOPS mode, the antenna beams steers in azimuth direction resulting in high Doppler centroid frequency variation, which requires stringent coregistration accuracy. In this paper, an Improved Spectral Diversity (ISD) coregistration algorithm is proposed to improve the coregistration accuracy and reduce the elevation measurement error of the ocean surface. Both Spectral Diversity (SD) algorithm and ISD algorithm are simulated and the simulation results show the ISD can effectively reduce the elevation error.

Paper Details

Date Published: 9 August 2018
PDF: 10 pages
Proc. SPIE 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018), 108063Q (9 August 2018); doi: 10.1117/12.2503211
Show Author Affiliations
Shuang Wu, National Univ. of Defense Technology (China)
Yuxin Hou, National Univ. of Defense Technology (China)
Haifeng Huang, National Univ. of Defense Technology (China)
Xiaoqing Wang, Institute of Microelectronics (China)

Published in SPIE Proceedings Vol. 10806:
Tenth International Conference on Digital Image Processing (ICDIP 2018)
Xudong Jiang; Jenq-Neng Hwang, Editor(s)

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