Array · collection · 2024
SMAP L1B Polarimetric GNSS Reflectometry, Version 1
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/zf4oxsd2ns7w
This product represents the first full polarimetric Global Navigation Satellite System Reflectometry (GNSS-R) dataset, derived from the Soil Moisture Active Passive (SMAP) mission radar.
Description
The main parameters are the normalized Stokes parameters, total power normalized bistatic radar cross section, and reflectivity. The SMAP radar receiver, in bistatic radar configuration, measures the horizontal and vertical components of the Global Positioning System (GPS) signal as it is reflected and scatters from the Earth’s surface.
Stokes parameters are computed with these horizontal and vertical polarization measurements. The dataset comprises a full reconstruction of the Earth' surface polarimetric values, with approximately 3,200 observations per day and about 1,200,000 per year.
Links
Get the data
- Resource doi.org/10.5067/zf4oxsd2ns7w ↗
Provides access to data, documentation, tools, citation information, support, and other resources.
landing page · documentation · download · DOI / persistent id · from NASA CMR, data nasa gov
- Resource doi.org/10.1109/tgrs.2023.3280363 ↗
A Hybrid Compact Polarimetry GNSS-R Analysis of the Earth’s Cryosphere
documentation · download · from NASA CMR, data nasa gov
- Resource doi.org/10.1038/s41598-023-30805-7 ↗
The first polarimetric GNSS‑Reflectometer instrument in space improves the SMAP mission’s sensitivity over densely vegetated areas
documentation · download · from NASA CMR, data nasa gov
- Resource ieeexplore.ieee.org/document/10102359 ↗
Calibration Strategy for Compact Polarimetric GNSS-R Instruments
documentation · download · from NASA CMR, data nasa gov
- Resource ieeexplore.ieee.org/document/9783108 ↗
Stokes Parameters Retrieval and Calibration of Hybrid Compact Polarimetric GNSS-R Signals
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C3236702461-NSIDCV0.iso19115 ↗
download · from data nasa gov
- daacdata.apps.nsidc.org /pub/DATASETS/nsidc0795_SMAP_Reflectometry_v01 ↗
Quickly download a few files using a web browser, or access data through a command-line utility such as WGET.
download · from NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/smap-l1b-polarimetric-gnss-reflectometry-version-1-734… ↗
landing page · from data nasa gov
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3236702461-NSIDCV0.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=e1afd2d9-cde5-45bb-993b-53dcb1886… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3236702461-NSIDCV0.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Radar Cross-Section · Radar Reflectivity · SMAP L-Band Radar · Soil Moisture Active and Passive Observatory · Stokes Parameter
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
- Inferred from text
- Geophysics 73%
Provenance · 2 source records, 21 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3236702461-NSIDCV0 | 8 d ago | JSON v1 |
| NASA Data Portal | e1afd2d9-cde5-45bb-993b-53dcb18864dd | 5 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3706 | enrichment · NASA CMR | taxonomy-embedding@1.0.0 | title+keywords+description (73%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:engineering | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:smap-l-band-radar | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/radar-cross-section | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/radar-reflectivity | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/stokes-parameter | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:smap | 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 |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| 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 |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |