Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR
This study presents results for observing forest changes in Sweden using multi-temporal L-band satellite data and is a part of the JAXA’s ALOS Kyoto and Carbon Initiative. An extensive dataset of images acquired by the Advanced Land Observing Satellite Phased Array type L-band Synthetic Aperture Rad...
| Autor principal: | |
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| Formato: | H1 |
| Lenguaje: | Inglés sueco |
| Publicado: |
SLU/Dept. of Forest Resource Management
2009
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| Materias: |
| _version_ | 1855570217565945856 |
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| author | Krantz, Anders |
| author_browse | Krantz, Anders |
| author_facet | Krantz, Anders |
| author_sort | Krantz, Anders |
| collection | Epsilon Archive for Student Projects |
| description | This study presents results for observing forest changes in Sweden using multi-temporal L-band satellite data and is a part of the JAXA’s ALOS Kyoto and Carbon Initiative. An extensive dataset of images acquired by the Advanced Land Observing Satellite Phased Array type L-band Synthetic Aperture Radar (ALOS PALSAR) is investigated for clear-cut detection in boreal forests in northern Sweden (Lat. 64°14’ N, Long. 19°50’ E). Strong forest/non-forest contrast and temporal consistency were found for the Fine Beam Dual HV-polarized backscatter during unfrozen conditions. Thus, a simple thresholding algorithm that exploits the temporal consistency of pair-wise HV-backscatter measurements has been developed for detection of clear-felled areas. When applied to an image pair acquired during favorable weather conditions, the detection algorithm identified 76% of the clear-cut pixels within a reference layer, with zero erroneously detected pixels. With further refinement, the developed methodology can be an option to present operational alternatives for clear-cut detection. |
| format | H1 |
| id | RepoSLU716 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2009 |
| publishDateSort | 2009 |
| publisher | SLU/Dept. of Forest Resource Management |
| publisherStr | SLU/Dept. of Forest Resource Management |
| record_format | eprints |
| spelling | RepoSLU7162012-04-20T14:10:39Z Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR Kartläggning av hyggen i svensk skogsmark med satellitbilder från radarinstrumentet ALOS PALSAR Krantz, Anders Remote Sensing Forest monitoring Algorithm change detection JAXA This study presents results for observing forest changes in Sweden using multi-temporal L-band satellite data and is a part of the JAXA’s ALOS Kyoto and Carbon Initiative. An extensive dataset of images acquired by the Advanced Land Observing Satellite Phased Array type L-band Synthetic Aperture Radar (ALOS PALSAR) is investigated for clear-cut detection in boreal forests in northern Sweden (Lat. 64°14’ N, Long. 19°50’ E). Strong forest/non-forest contrast and temporal consistency were found for the Fine Beam Dual HV-polarized backscatter during unfrozen conditions. Thus, a simple thresholding algorithm that exploits the temporal consistency of pair-wise HV-backscatter measurements has been developed for detection of clear-felled areas. When applied to an image pair acquired during favorable weather conditions, the detection algorithm identified 76% of the clear-cut pixels within a reference layer, with zero erroneously detected pixels. With further refinement, the developed methodology can be an option to present operational alternatives for clear-cut detection. SLU/Dept. of Forest Resource Management 2009 H1 eng swe https://stud.epsilon.slu.se/716/ |
| spellingShingle | Remote Sensing Forest monitoring Algorithm change detection JAXA Krantz, Anders Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR |
| title | Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR |
| title_full | Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR |
| title_fullStr | Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR |
| title_full_unstemmed | Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR |
| title_short | Mapping of clear-cuts in Swedish forest using satellite images acquired by the radar sensor ALOS PALSAR |
| title_sort | mapping of clear-cuts in swedish forest using satellite images acquired by the radar sensor alos palsar |
| topic | Remote Sensing Forest monitoring Algorithm change detection JAXA |