Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming
Abstract Synthetic Aperture Radar (SAR) Coherent Change Detection allows for the detection of very small scene changes. This is particularly useful for Intelligence, Surveillance and Reconnaissance as small changes such as vehicle tracks can be identified. Rapidly collecting repeat pass SAR imagery...
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | IET Radar, Sonar & Navigation |
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| Online Access: | https://doi.org/10.1049/rsn2.12659 |
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| author | Alexander Hagelberg Daniel Andre Mark Finnis |
| author_facet | Alexander Hagelberg Daniel Andre Mark Finnis |
| author_sort | Alexander Hagelberg |
| collection | DOAJ |
| description | Abstract Synthetic Aperture Radar (SAR) Coherent Change Detection allows for the detection of very small scene changes. This is particularly useful for Intelligence, Surveillance and Reconnaissance as small changes such as vehicle tracks can be identified. Rapidly collecting repeat pass SAR imagery is important in these applications. For space‐borne platforms, such repeat passes may however have significant differences, or baselines. Coherent Change Detection products are reliant on high coherence for good interpretability. This work investigates the sources and levels of incoherence associated with bistatic SAR imagery for a variety of baselines using simulations and measured laboratory data for two ground types. Additionally, spatially variant incoherence trimming is implemented. The paper shows the importance of angle‐dependant backscatter on the coherence of sub‐resolution cell scatterers. |
| format | Article |
| id | doaj-art-81a0f52fcc6d4fa1b5053a63289f6f30 |
| institution | Kabale University |
| issn | 1751-8784 1751-8792 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Radar, Sonar & Navigation |
| spelling | doaj-art-81a0f52fcc6d4fa1b5053a63289f6f302024-12-28T09:48:49ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922024-12-0118122564258010.1049/rsn2.12659Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimmingAlexander Hagelberg0Daniel Andre1Mark Finnis2Centre for Electronic Warfare Information and Cyber Cranfield University Defence Academy of the United Kingdom Swindon UKCentre for Electronic Warfare Information and Cyber Cranfield University Defence Academy of the United Kingdom Swindon UKCentre for Defence Engineering Cranfield University SN6 8LA Defence Academy of the United Kingdom Shrivenham UKAbstract Synthetic Aperture Radar (SAR) Coherent Change Detection allows for the detection of very small scene changes. This is particularly useful for Intelligence, Surveillance and Reconnaissance as small changes such as vehicle tracks can be identified. Rapidly collecting repeat pass SAR imagery is important in these applications. For space‐borne platforms, such repeat passes may however have significant differences, or baselines. Coherent Change Detection products are reliant on high coherence for good interpretability. This work investigates the sources and levels of incoherence associated with bistatic SAR imagery for a variety of baselines using simulations and measured laboratory data for two ground types. Additionally, spatially variant incoherence trimming is implemented. The paper shows the importance of angle‐dependant backscatter on the coherence of sub‐resolution cell scatterers.https://doi.org/10.1049/rsn2.12659decorrelationelectromagnetic wave scatteringfrequency‐domain analysismultistatic radarpolarimetric radarradar clutter |
| spellingShingle | Alexander Hagelberg Daniel Andre Mark Finnis Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming IET Radar, Sonar & Navigation decorrelation electromagnetic wave scattering frequency‐domain analysis multistatic radar polarimetric radar radar clutter |
| title | Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming |
| title_full | Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming |
| title_fullStr | Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming |
| title_full_unstemmed | Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming |
| title_short | Bistatic multi‐polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming |
| title_sort | bistatic multi polarimetric synthetic aperture radar coherence investigation using spatially variant incoherence trimming |
| topic | decorrelation electromagnetic wave scattering frequency‐domain analysis multistatic radar polarimetric radar radar clutter |
| url | https://doi.org/10.1049/rsn2.12659 |
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