Data · collection · 2019
Envisat ASAR WS Single Look Complex L1 [ASA_WSS_1P]
Listed in NASA Earthdata CMR
The Level-1B data product offered by ESA from the ASAR Wide-Swath Mode (WS) is the multi-look detected product (ASA_WSM_1P), intended to support applications that exploit intensity data.
Description
In order to support the development of new applications with the ASAR ScanSAR data, a WSM product providing phase information has been developed and implemented in the ESA ASAR processor, the Wide-Swath Single-Look complex product (ASA_WSS_1P).
This product is mainly used for INSAR applications based either on wide-swath/wide-swath pairs or wide-swath/image mode pairs, applications of ocean current mapping, large-area ocean wave retrievals, and atmospheric water vapour characterisation. It shall be mentioned that the standard ESA WSS product is based on the prototype WSS processor developed by Polimi/Poliba, which has also been used to generate prototype products for testing the potential and preparing the exploitation of the WSS product.
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The ESA ASA_WSS_1P product is available as a standard Envisat ASAR product. The ASA_WSS_1P product format is slightly different from other ASAR products since: - there are 5 different MDSs, one per sub-swath - a "Doppler Grid" ADS has been included to support ocean current mapping applications - there are 5 records in the MPP ADS, one per sub-swath - there are 5 records in the SQ ADS, one per sub-swath Other key characteristics of the ASA_WSS_1P product are summarised below: - processing is fully phase preserving - data in the MDSs is sampled in a common grid both in range and in azimuth - standard product is 60 sec long with 80 m az. pixel spacing - auxiliary timeline information has been added in the Main Processing Parameters ADS - elevation antenna pattern correction is applied by default (although the product is a single-look complex) - Spatial Resolution: approximately 8 m slant range x 80 m azimuth
Links
Get the data
- DescribedBy fedeo-client.ceos.org/?uid=ENVISAT.ASA.WSS_1P ↗
download · from NASA CMR
- DescribedBy fedeo.ceos.org/collections/series/items/ENVISAT.ASA.WSS_1P?httpAccept=applica… ↗
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1532648146-ESA.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1532648146-ESA.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Advanced Synthetic Aperature Radar · Environmental Satellite · Sea Surface Topography
- Inferred from text
- Image 75%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1532648146-ESA | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:asar | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/sea-surface-topography | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:envisat | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |