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Remote Sens. 2018, 10(10), 1504; https://doi.org/10.3390/rs10101504

A Common “Stripmap-Like” Interferometric Processing Chain for TOPS and ScanSAR Wide Swath Mode

1
Lyles School of Civil Engineering, Purdue University, West Lafayette, IN 47906, USA
2
School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
*
Author to whom correspondence should be addressed.
Received: 3 August 2018 / Revised: 7 September 2018 / Accepted: 10 September 2018 / Published: 20 September 2018
(This article belongs to the Section Remote Sensing Image Processing)
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Abstract

This article describes the technical implementation of a “stripmap-like” interferometric processing flow that could be used for both Terrain Observation with Progressive Scans (TOPS) and ScanSAR. In this “stripmap-like” approach, the discontinuous bursts of wide swath mode for the same subswath are stitched into a continuous single look complex (SLC) image at the very beginning of the processing chain. For users who wish not to get into the complexity behind the wide swath mode and simply want to use the interferometric products, this implementation provides the identical processing steps and output products to the stripmap case. This implementation also features a user-friendly processing interface, where all the wide-swath-related processes are hidden under the hood. In addition, this approach makes the best use of an existing standard InSAR processing software. In this article, the complete common processing chain for TOPS and ScanSAR is elaborated and some key issues are discussed, starting from stitching, deramping to coregistration and enhanced spectral diversity (ESD). The authors also introduce a quick implementation of fine coregistration during the ESD step that does not require resampling the slave image using the conventional method. View Full-Text
Keywords: TOPS; ScanSAR; wide swath; interferometric processing chain; stripmap-like TOPS; ScanSAR; wide swath; interferometric processing chain; stripmap-like
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Qin, Y.; Perissin, D.; Bai, J. A Common “Stripmap-Like” Interferometric Processing Chain for TOPS and ScanSAR Wide Swath Mode. Remote Sens. 2018, 10, 1504.

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