CYGNSS Level 1 Calibrated Raw IF Version 1.0

Description

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.

Resources

Name Format Description Link
33 Level 1A DDM Calibration Algorithm Theoretical Basis Document, S. Gleason, CYGNSS Project Document 148-0136, Rev 2, 20 Aug. 2018. http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf
21 Hugo Carreno-Luengo, Christopher S. Ruf, Scott Gleason, Anthony Russel, Detection of inland water bodies under dense biomass by CYGNSS, Remote Sensing of Environment, Volume 301, 2024, 113896, ISSN 0034-4257, https://doi.org/10.1016/j.rse.2023.113896. https://www.sciencedirect.com/science/article/pii/S0034425723004479
33 60 second FM8 Raw IF data collection over Hurricane Harvey Example https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/sw/Processing_CYGNSS_RawIF_Collection_Example.pdf
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_6.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_8.txt
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FCYGNS-L1C10
21 Matlab code to plot Raw IF Data over the land. https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/sw/post_processing_script/Plot_rawIF_Tracks_land.m
21 CYGNSS Mission Page at University of Michigan https://cygnss.engin.umich.edu/
33 Algorithm Theoretical Basis Document (ATBD) for the CYGNSS Calibrated Raw IF based L1 Data Product https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0417-1_ATBD_Calibrated_IF.pdf
33 Deriving Surface Winds from Tropical Cyclones https://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/06/CYGNSS_Handbook_April2016.pdf
21 Forum Post Capturing Changes to CYGNSS Sampling Rate https://podaac.jpl.nasa.gov/forum/viewtopic.php?f=16&t=1261
21 Matlab code to read Raw IF Metadata files. https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/sw/post_processing_script/process_rawIF_metadata.m
22 Thumbnail https://podaac.jpl.nasa.gov/Podaac/thumbnails/CYGNSS_L1_CAL_RAW_IF_V1.0.jpg
21 CYGNSS Raw IF Dataset File Formatting and Specifications Document https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0354-2_CYGNSS_RawIF_Data_File_Format.docx
21 Data Use and Citation Policy https://podaac.jpl.nasa.gov/CitingPODAAC
21 HTTPS endpoint for data browse and download https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2927929087-POCLOUD
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_4.txt
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_7.txt
21 Complete set of C and Matlab processing code https://github.com/podaac/CYGNSS-Raw-IF-Code
21 PO.DAAC Cookbook https://podaac.github.io/tutorials/
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_3.txt
21 Matlab code to plot Raw IF Data over the globe. https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/sw/post_processing_script/Plot_rawIF_Tracks.m
21 Gleason, S., C. Ruf, M. P. Clarizia, A. O'Brien, 'Calibration and Unwrapping of the Normalized Scattering Cross Section for the Cyclone Global Navigation Satellite System (CYGNSS)', IEEE Trans. Geosci. Remote Sens., doi:10.1109/TGRS.2015.2502245, 2016. https://doi.org/10.1109/TGRS.2015.2502245
21 Browse granule search results in Earthdata Search https://search.earthdata.nasa.gov/search/granules?p=C2927929087-POCLOUD
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_2.txt
21 CYGNSS Handbook https://doi.org/10.3998/mpub.12741920
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_1.txt
21 H. Carreno-Luengo, C. S. Ruf, S. Gleason and A. Russel, "A New Multiresolution CYGNSS Data Product for Fully and Partially Coherent Scattering," in IEEE Transactions on Geoscience and Remote Sensing, vol. 61, pp. 1-18, 2023, Art no. 4408118, doi: 10.1109/TGRS.2023.3318639. https://ieeexplore.ieee.org/abstract/document/10262085
21 CYGNSS Targeting Information for Raw IF Data https://docs.google.com/spreadsheets/d/1kS6XC5JPzILl8w0ZnOn5JyFvkD9hcDxFe18rjgd6ylo/edit?usp=sharing
21 Ruf, C., R. Atlas, P. Chang, M. Clarizia, J. Garrison, S. Gleason, S. Katzberg, Z. Jelenak, J. Johnson, S. Majumdar, A. O'Brien, D. Posselt, A. Ridley, R. Rose, V. Zavorotny (2015). New Ocean Winds Satellite Mission to Probe Hurricanes and Tropical Convection. Bull. Amer. Meteor. Soc., doi:10.1175/BAMS-D-14-00218.1. https://journals.ametsoc.org/doi/10.1175/BAMS-D-14-00218.1
21 Data Dictionary https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0416-1_L1_Processed_Raw_IF_DDM_netCDF_Data_Dictionary_v1.1.xlsx
21 Updated Monthly https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_5.txt

Tags

  • spectral-engineering
  • radar
  • earth-science

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