Exploitation of SAS interferometric phase statistics for coherent change detection
Abstract Coherent change detection (CCD) takes advantage of the interferometric processing of synthetic aperture sonar (SAS) images and enables the detection of small scale changes to the scene between image pairs. This paper builds upon interferometric phase statistics developed for synthetic apert...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-11-01
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| Series: | Electronics Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/ell2.12834 |
| _version_ | 1797632589968703488 |
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| author | Emma Shouldice Vincent Myers |
| author_facet | Emma Shouldice Vincent Myers |
| author_sort | Emma Shouldice |
| collection | DOAJ |
| description | Abstract Coherent change detection (CCD) takes advantage of the interferometric processing of synthetic aperture sonar (SAS) images and enables the detection of small scale changes to the scene between image pairs. This paper builds upon interferometric phase statistics developed for synthetic aperture radar and presents a method to differentiate between possible sources of decorrelation. A single‐pass pair of SAS images is categorized into four zones based on acoustic amplitude and coherence properties. Results suggest that regions of low coherence caused by a scene change can be differentiated from regions of low coherence due to other sources of decorrelation. Phase statistics could provide a technique to reduce the false alarm rate in CCD. Further studies are required to validate the approach for repeat‐pass SAS imagery and consider the effects of temporal decorrelation and misregistration errors on the phase distributions. |
| first_indexed | 2024-03-11T11:40:00Z |
| format | Article |
| id | doaj.art-dec45951c11e467c987f559c60daf679 |
| institution | Directory Open Access Journal |
| issn | 0013-5194 1350-911X |
| language | English |
| last_indexed | 2024-03-11T11:40:00Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Electronics Letters |
| spelling | doaj.art-dec45951c11e467c987f559c60daf6792023-11-10T08:20:32ZengWileyElectronics Letters0013-51941350-911X2023-11-015921n/an/a10.1049/ell2.12834Exploitation of SAS interferometric phase statistics for coherent change detectionEmma Shouldice0Vincent Myers1Defence Research and Development Canada 9 Grove Street Dartmouth B3A 3C5 CanadaDefence Research and Development Canada 9 Grove Street Dartmouth B3A 3C5 CanadaAbstract Coherent change detection (CCD) takes advantage of the interferometric processing of synthetic aperture sonar (SAS) images and enables the detection of small scale changes to the scene between image pairs. This paper builds upon interferometric phase statistics developed for synthetic aperture radar and presents a method to differentiate between possible sources of decorrelation. A single‐pass pair of SAS images is categorized into four zones based on acoustic amplitude and coherence properties. Results suggest that regions of low coherence caused by a scene change can be differentiated from regions of low coherence due to other sources of decorrelation. Phase statistics could provide a technique to reduce the false alarm rate in CCD. Further studies are required to validate the approach for repeat‐pass SAS imagery and consider the effects of temporal decorrelation and misregistration errors on the phase distributions.https://doi.org/10.1049/ell2.12834acoustic imagingsonar detectionsonar imagingunderwater acoustic communicationunderwater vehicles |
| spellingShingle | Emma Shouldice Vincent Myers Exploitation of SAS interferometric phase statistics for coherent change detection Electronics Letters acoustic imaging sonar detection sonar imaging underwater acoustic communication underwater vehicles |
| title | Exploitation of SAS interferometric phase statistics for coherent change detection |
| title_full | Exploitation of SAS interferometric phase statistics for coherent change detection |
| title_fullStr | Exploitation of SAS interferometric phase statistics for coherent change detection |
| title_full_unstemmed | Exploitation of SAS interferometric phase statistics for coherent change detection |
| title_short | Exploitation of SAS interferometric phase statistics for coherent change detection |
| title_sort | exploitation of sas interferometric phase statistics for coherent change detection |
| topic | acoustic imaging sonar detection sonar imaging underwater acoustic communication underwater vehicles |
| url | https://doi.org/10.1049/ell2.12834 |
| work_keys_str_mv | AT emmashouldice exploitationofsasinterferometricphasestatisticsforcoherentchangedetection AT vincentmyers exploitationofsasinterferometricphasestatisticsforcoherentchangedetection |