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Remote Sens. 2017, 9(3), 216; doi:10.3390/rs9030216

Burst Misalignment Evaluation for ALOS-2 PALSAR-2 ScanSAR-ScanSAR Interferometry

1
Earth Observation Research Center, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba 305-8505, Ibaraki- Prefecture, Japan
2
School of Science and Engineering, Tokyo Denki University, Ishizaka, Hatoyama-machi, Hiki-gun 350-0394, Saitama Prefecture, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Bruce Chapman, Paul Siqueira, Nicolas Baghdadi and Prasad S. Thenkabail
Received: 21 December 2016 / Revised: 17 February 2017 / Accepted: 25 February 2017 / Published: 28 February 2017
(This article belongs to the Special Issue Calibration and Validation of Synthetic Aperture Radar)
View Full-Text   |   Download PDF [1223 KB, uploaded 28 February 2017]   |  

Abstract

This paper reports the validation results of burst misalignment for ScanSAR-ScanSAR interferometry of the Phased Array-type L-band Synthetic Aperture Radar-2 (PALSAR-2) aboard the Advanced Land Observing Satellite-2 (ALOS-2, “DAICHI-2”). After the internal software modification on 8 February 2015, ALOS-2 ScanSAR observation mode archives have been available for use in interferometric analysis, as it was planned. However, it has not been reported whether its burst misalignment satisfies the mission requirements: 90% or higher burst overlap ratio. The validation results in this paper confirm that the expected observation misalignment satisfies the required range, including minimal seasonal and orbital dependencies. The results in this paper are obtained directly from the azimuth offset of the single look complex (SLC) data and are not derived from the orbit records. Nine identical orbits and frame numbers are chosen and evaluated to investigate the average burst misalignment and orbital dependency. View Full-Text
Keywords: synthetic aperture radar (SAR); ALOS-2; PALSAR-2; ScanSAR; ScanSAR-ScanSAR interferometry synthetic aperture radar (SAR); ALOS-2; PALSAR-2; ScanSAR; ScanSAR-ScanSAR interferometry
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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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MDPI and ACS Style

Natsuaki, R.; Motohka, T.; Shimada, M.; Suzuki, S. Burst Misalignment Evaluation for ALOS-2 PALSAR-2 ScanSAR-ScanSAR Interferometry. Remote Sens. 2017, 9, 216.

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