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Junichi Miyao - IEEE Xplore Author Profile

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The implementation of a wide-land deformation monitoring program in eastern states of Australia, characterized by an extensive landmass and extensive coastlines, necessitates the generation of deformation maps with a significantly larger spatial extent. A pragmatic approach for achieving such coverage involves the integration of multiple interferometric synthetic aperture radar (InSAR) time series...Show More
The Sentinel-1 satellite constellation provides temporally dense and high spatial resolution Synthetic Aperture Radar (SAR) imagery. The open data policy and global coverage of Sentinel-1 enables applications that require long time series, such as modelling surface deformation rates from Interferometric Synthetic Aperture Radar (InSAR) data, to be scaled-up and generate continent-scale products. I...Show More
This article shows how the array of corner reflectors (CRs) in Queensland, Australia, together with highly accurate geodetic synthetic aperture radar (SAR) techniques-also called imaging geodesy-can be used to measure the absolute and relative geometric fidelity of SAR missions. We describe, in detail, the end-to-end methodology and apply it to TerraSAR-X Stripmap (SM) and ScanSAR (SC) data and to...Show More
Synthetic Aperture Radar (SAR) satellites observe range and azimuth geometric accuracies at the low centimeter level. The accuracy of geolocation is driven by several aspects, e.g. orbit determination, SAR image processing, or atmospheric error correction. Our paper concentrates on the Sentinel-1 mission and the compensation of the platform motion effects in the geolocation, which were found to li...Show More
In this contribution we present interferometric time series analysis of ALOS PALSAR images acquired between 2007 and 2011 for the Rabaul Caldera, situated at the north-eastern point of New Britain Island in Papua New Guinea. During this time period, a broad subsidence signal is observed across the caldera, followed by a period of uplift. These signals are thought to originate from deflation and in...Show More
Geoscience Australia is implementing the geospatial component of the Australian Geophysical Observing System (AGOS). AGOS infrastructure will include a network of radar corner reflectors, in addition to a geodetic ground mark network for monitoring ground deformation in Australia. In this paper we describe the design of radar corner reflectors for deformation studies and calibration of Synthetic A...Show More