Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback
    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    CYGNSS Level 1 Calibrated Raw IF Version 1.0

    Metadata Updated: February 22, 2025

    This dataset contains the first release, Version 1.0, of the CYGNSS Calibrated Raw Intermediate Frequency (IF) based L1 Product. This product includes several established signal coherence detectors, including the power-ratio Pratio, complex zero-Doppler delay waveform and full entropy Efull, and a novel fast entropy detector Efast. Both entropy detectors are provided with two temporal resolutions: 2 ms and 50 ms. Several scattered signal strength products are included: Signal-to-Noise Ratio SNR, reflected power Pg, reflectivity Γ, and Normalized Bistatic Radar Cross-Section NBRCS. Each of these products is derived using a coherent integration time of Tc = 1 ms and incoherent integration times of Ninc = 1000, 500, 250, 100, 50, and 2 ms. Signal strength time series at the shorter (2 and 50 ms) times provides excellent detection of land-water transitions in heterogeneous scenes. Delay Doppler Maps (DDMs) are also generated with high delay (∆τ = 1/16 chip) and Doppler (∆f= 50 Hz) resolution. This suite of coherence detection methods can be used to detect the presence of small inland water bodies.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    References

    https://doi.org/10.1109/JSTARS.2018.2832981

    Dates

    Metadata Created Date February 22, 2025
    Metadata Updated Date February 22, 2025

    Metadata Source

    Harvested from nasa test json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 22, 2025
    Metadata Updated Date February 22, 2025
    Publisher NASA/JPL/PODAAC
    Maintainer
    Identifier C2927929087-POCLOUD
    Data First Published 2020-07-24
    Language en-US
    Data Last Modified 2025-02-19
    Category CYGNSS, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id f32beb64-c96f-4a80-8a4f-f629ddc408ba
    Harvest Source Id a73e0c30-4684-40ef-908e-d22e9e9e5f86
    Harvest Source Title nasa test json
    Homepage URL https://doi.org/10.5067/CYGNS-L1C10
    Metadata Type geospatial
    Old Spatial -180.0 -40.0 180.0 40.0
    Program Code 026:001
    Related Documents https://doi.org/10.1109/JSTARS.2018.2832981
    Source Datajson Identifier True
    Source Hash b07f22a326a53b3fbe57e6a26df6852489bac98680786974be3f5d03407c612b
    Source Schema Version 1.1
    Spatial
    Temporal 2017-02-19T23:12:08Z/2024-06-17T00:00:00Z

    Didn't find what you're looking for? Suggest a dataset here.