Micro-Motion Estimation of Maritime Targets Using Pixel Tracking in Cosmo-Skymed Synthetic Aperture Radar Data—An Operative Assessment
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Electromagnetic Laboratory, Engineering Faculty, University of L’Aquila, 67100 L’Aquila, Italy
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Science and Technology for Transportations Faculty, Università degli Studi “Giustino Fortunato”, viale Raffale Delcogliano, 12, 82100 Benevento, Italy
3
Engineering Faculty, Università degli Studi “Niccolò Cusano”, Via Don Carlo Gnocchi, 3, 00166 Roma, Italy
4
Centre for Signal and Image Processing, Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XW, UK
*
Author to whom correspondence should be addressed.
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Current address: Via Luca Benincasa 21/B 06073 Corciano Perugia (Italy).
Remote Sens. 2019, 11(14), 1637; https://doi.org/10.3390/rs11141637
Received: 20 May 2019 / Revised: 2 July 2019 / Accepted: 4 July 2019 / Published: 10 July 2019
(This article belongs to the Special Issue Exploitation of Synthetic Aperture Radar Targets Velocities)
Abstract
In this paper, we propose a novel strategy to estimate the micro-motion (m-m) of ships from synthetic aperture radar (SAR) images. To this end, observe that the problem of motion and m-m detection of targets is usually solved using synthetic aperture radar (SAR) along-track interferometry through two radars spatially separated by a baseline along the azimuth direction. The approach proposed in this paper for m-m estimation of ships, occupying thousands of pixels, processes the information generated during the coregistration of several re-synthesized time-domain and not overlapped Doppler sub-apertures. Specifically, the SAR products are generated by splitting the raw data according to a temporally small baseline using one single wide-band staring spotlight (ST) SAR image. The predominant vibrational modes of different ships are then estimated. The performance analysis is conducted on one ST SAR image recorded by COSMO-SkyMed satellite system. Finally, the newly proposed approach paves the way for application to the surveillance of land-based industry activities. View Full-TextKeywords:
along-track interferometry; COSMO-Skymed; frequency modes; micro-motion (m-m); staring spotlight; synthetic aperture radar; sub-pixel offset tracking; vibrations
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Biondi, F.; Addabbo, P.; Orlando, D.; Clemente, C. Micro-Motion Estimation of Maritime Targets Using Pixel Tracking in Cosmo-Skymed Synthetic Aperture Radar Data—An Operative Assessment. Remote Sens. 2019, 11, 1637.
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