Scale invariant coherent change detection to locate micro-motion in single pass SAR images

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Rollo, Finlay Gardiner and Vattulainen, Aleksanteri and Ilioudis, Christos and Milillo, Pietro and Clemente, Carmine; (2024) Scale invariant coherent change detection to locate micro-motion in single pass SAR images. In: 2024 IEEE International Workshop on Technologies for Defense and Security. IEEE, ITA.

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Abstract

Micro-Doppler analysis of SAR signals has a broad range of applications including target vibrometry, structural health monitoring, and maritime surveillance. Location of sources of micro-Doppler signals in SAR images is however not straightforward, where typical artifacts such as ‘ghost’ targets may be unnoticeable if, for example, a vibration is of low amplitude and frequency. This issue is exacerbated by background noise and clutter. A method for locating micro-Doppler signals using scale invariant coherent change detection between subaperture images is developed and tested on SAR data of vibrating targets with a ground truth vibrational frequency of 2 Hz and amplitudes of 16.13 mm and 1.08 mm. The results indicate that this method is promising, where micro-motion from both targets was located and the relative insensitivity of the technique to bright stationary targets is also demonstrated.

ORCID iDs

Rollo, Finlay Gardiner, Vattulainen, Aleksanteri ORCID logoORCID: https://orcid.org/0000-0003-1898-600X, Ilioudis, Christos ORCID logoORCID: https://orcid.org/0000-0002-7164-6461, Milillo, Pietro and Clemente, Carmine ORCID logoORCID: https://orcid.org/0000-0002-6665-693X;
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