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"[Repository](../collection.json) > [ccae7598-e59a-4877-ac34-cb94efe66642](collection.json) > [Ground geometry](geo_collection.json) > [Interferograms](geo_interferogram_collection.json) > [Interferogram from 20211129 to 20211205](geo_interferogram_20211129_20211205_collection.json) > Filtered Wrapped Differential Interferogram\n\n# Filtered Wrapped Interferogram\n\n> This product corresponds to the **filtered wrapped interferogram**.\n>\n> The geotiff file has 2 bands:\n>\n> - band 1 is the filtered wrapped phase (phase difference between the two acquisitions) of the interferogram, corrected from stratified atmospheric delay (if asked) and from spectral diversity. It is by default filtered by a moving average, triangular window, filter. Multilooking is that defined with Rlooks_unw and given in nsbas.proc file.\n> - band 2 is either the product of the two image’s amplitudes (if ROIPAC Goldstein filter is used) or a coherence (if a Sliding window filter is used (SW)). The coherence is obtained when the sliding window average is applied on the wrapped interferogram phase: it thus quantifies the quality of the filtered phase (1: good quality, 0: no coherence).\n>\n> The png file has 1 band:\n>\n> - band 1 is the filtered wrapped phase of the interferogram, normalized by a color palette.\n\n[source](https://formater.pages.in2p3.fr/flatsim/products/InWF.html)\n", "providers": [ { "name": "ESA", "description": "The European Space Agency (ESA) is a 22-member intergovernmental body devoted to space exploration. With its headquarters in Paris and a staff of around 2,547 people globally as of 2023, the ESA was founded in 1975.", "roles": [ "producer" ], "url": "https://www.esa.int/" }, { "name": "OSUG", "description": "L'Observatoire des sciences de l'Univers de Grenoble (OSUG) est un observatoire des sciences de l'Univers (OSU) associé à l'Institut national des sciences de l'Univers (INSU) du CNRS et une école interne de l'université Grenoble-Alpes. Les OSU ont pour mission l’observation, la recherche, la formation et la diffusion des connaissances. L’OSUG œuvre dans tous les domaines des Sciences de l’Univers, de la planète Terre et de l’environnement.", "roles": [ "processor", "licensor" ], "url": "https://www.osug.fr/" }, { "name": "OPGC", "description": "L'Observatoire de physique du globe de Clermont-Ferrand (OPGC) est un observatoire des sciences de l'univers (OSU) dépendant du Centre national de la recherche scientifique (CNRS) et de l’université Clermont-Auvergne (UCA). Fondé en 1876 par Émile Alluard sous le nom d'Observatoire du Puy de Dôme, il s'est nommé l'Institut et observatoire de physique du globe (IOPG) de 1921 à 1985.", "roles": [ "host" ], "url": "https://opgc.uca.fr/" } ], "platforms": [ "sentinel-1a", "sentinel-1b" ], "instruments": [ "c-sar" ], "constellation": "sentinel-1", "mission": null, "licenses": "CC-BY-NC-4.0", "sat:platform_international_designator": "2014-016A", "sat:orbit_state": "geostationary", "sat_ext:platform_international_designators": [ "2014-016A", "2016-025A" ], "sar:frequency_band": "C", "sar:center_frequency": 5.405, "sar_ext:wavelength": 0.05546576, "processing:level": "L2", "sci:publications": [ { "citation": "Doin, M.-P., Lodge, F., Guillaso, S., Jolivet, R., Lasserre, C., Ducret, G., Grandin, R., Pathier, E., Pinel, V. (2011). Presentation of the small baseline NSBAS processing chain on a case example: The Etna deformation monitoring from 2003 to 2010 using Envisat data. In Proceedings of FRINGE 2011 ESA Workshop, Frascati, Italy,19–23 September 2011, ESA Publication SP-697.", "doi": "" }, { "citation": "Raphaël Grandin (Institut de Physique du Globe de Paris, France) (2015). \"Interferometric Processing of SLC Sentinel-1 TOPS Data \". In Proceedings of FRINGE’15: Advances in the Science and Applications of SAR Interferometry and Sentinel-1 InSAR Workshop, Frascati, Italy, 23-27 March 2015, Ouwehand L., Ed., ESA Publication SP-731.", "doi": "10.5270/Fringe2015.116" }, { "citation": "Thollard, F., Clesse, D., Doin, M.-P., Donadieu, J., Durand, P., Grandin, R., Lasserre, C., Laurent, C., Deschamps-Ostanciaux, E, Pathier, E., Pointal, E, Proy, C., Specht, B. (2021). FLATSIM: The ForM@Ter LArge-Scale Multi-Temporal Sentinel-1 InterferoMetry Service, Remote Sens. 13 (18), 3734.", "doi": "10.3390/rs13183734" } ], "keywords": [ "InSAR", "resolution_4looks", "ground geometry", "interferograms", "filtered wrapped interferogram", "from 2021-11-29 to 2021-12-05", "GDM-SAR-In", "geostationary", "NSBAS processing chain", "filtered interferogram" ], "datetime": "2024-09-27T12:27:32Z" }, "links": [ { "rel": "self", "href": "/data2/repository/gdmsarin/ccae7598-e59a-4877-ac34-cb94efe66642/geo_interferogram_20211129_20211205_4rlks_inwf_item.json", "type": "application/json" }, { "rel": "cite-as", "href": "https://flatsim.cnes.fr/doi/docs/NSBAS_Etna.pdf" }, { "rel": "cite-as", "href": "https://proceedings.esa.int/files/116.pdf" }, { "rel": "cite-as", "href": "https://www.mdpi.com/2072-4292/13/18/3734" }, { "rel": "license", "href": "https://creativecommons.org/licenses/by-nc/4.0/" }, { "rel": "parent", "href": "./geo_interferogram_collection.json", "type": "application/json", "title": "Interferogram from 20211129 to 20211205" }, { "rel": "collection", "href": "./geo_interferogram_collection.json", "type": "application/json", "title": "Interferogram from 20211129 to 20211205" } ], "assets": { "GDM_InWF_geo_20211129_20211205_sd_4rlks.png": { "href": "./assets/GDM_InWF_geo_20211129_20211205_sd_4rlks.png", "type": "image/png", "title": "GDM_InWF_geo_20211129_20211205_sd_4rlks.png", "description": "# Filtered Wrapped Interferogram\n\n> This product corresponds to the **filtered wrapped interferogram**.\n>\n> The geotiff file has 2 bands:\n>\n> - band 1 is the filtered wrapped phase (phase difference between the two acquisitions) of the interferogram, corrected from stratified atmospheric delay (if asked) and from spectral diversity. It is by default filtered by a moving average, triangular window, filter. Multilooking is that defined with Rlooks_unw and given in nsbas.proc file.\n> - band 2 is either the product of the two image’s amplitudes (if ROIPAC Goldstein filter is used) or a coherence (if a Sliding window filter is used (SW)). The coherence is obtained when the sliding window average is applied on the wrapped interferogram phase: it thus quantifies the quality of the filtered phase (1: good quality, 0: no coherence).\n>\n> The png file has 1 band:\n>\n> - band 1 is the filtered wrapped phase of the interferogram, normalized by a color palette.\n\n[source](https://formater.pages.in2p3.fr/flatsim/products/InWF.html)\n", "roles": [ "visual" ] }, "GDM_InWF_geo_20211129_20211205_sd_4rlks.tiff": { "href": "./assets/GDM_InWF_geo_20211129_20211205_sd_4rlks.tiff", "type": "image/tiff; application=geotiff", "title": "GDM_InWF_geo_20211129_20211205_sd_4rlks.tiff", "description": "# Filtered Wrapped Interferogram\n\n> This product corresponds to the **filtered wrapped interferogram**.\n>\n> The geotiff file has 2 bands:\n>\n> - band 1 is the filtered wrapped phase (phase difference between the two acquisitions) of the interferogram, corrected from stratified atmospheric delay (if asked) and from spectral diversity. It is by default filtered by a moving average, triangular window, filter. Multilooking is that defined with Rlooks_unw and given in nsbas.proc file.\n> - band 2 is either the product of the two image’s amplitudes (if ROIPAC Goldstein filter is used) or a coherence (if a Sliding window filter is used (SW)). The coherence is obtained when the sliding window average is applied on the wrapped interferogram phase: it thus quantifies the quality of the filtered phase (1: good quality, 0: no coherence).\n>\n> The png file has 1 band:\n>\n> - band 1 is the filtered wrapped phase of the interferogram, normalized by a color palette.\n\n[source](https://formater.pages.in2p3.fr/flatsim/products/InWF.html)\n", "roles": [ "visual" ] }, "download": { "href": "https://formater.osug.fr/download/gdm-sar-permanent/ccae7598-e59a-4877-ac34-cb94efe66642", "type": "text/html", "title": "Download tool", "description": "Link to the download page for the original source product, before STAC conversion.", "roles": [ "metadata" ] }, "documentation": { "href": "https://formater.pages.in2p3.fr/flatsim/product.html", "type": "text/html", "title": "Product description (general for NSBAS, including GDM-SAR-In and FLATSIM)", "description": "Documentation page describing the product names and acronyms, information about the generation of the products, and metadata definitions.", "roles": [ "metadata" ] }, "local_folder": { "href": "http://isdeform.opgc.fr/static/GDMSARIn/ccae7598-e59a-4877-ac34-cb94efe66642", "type": "text/html", "title": "Local folder for this STAC file", "roles": [ "metadata" ] } }, "collection": "ccae7598-e59a-4877-ac34-cb94efe66642_geo_interferogram_20211129_20211205_collection", "breadcrumb": "[Repository](../collection.json) > [ccae7598-e59a-4877-ac34-cb94efe66642](collection.json) > [Ground geometry](geo_collection.json) > [Interferograms](geo_interferogram_collection.json) > [Interferogram from 20211129 to 20211205](geo_interferogram_20211129_20211205_collection.json) > Filtered Wrapped Differential Interferogram", "ingestion_time": "2026-06-01T12:47:49.552261" }