CYGNSS Level 1 Full Delay Doppler Map Data Record Version 3.0

Description

This Level 1 (L1) dataset contains the Version 3.0 (v3.0) Full Delay Doppler Map (DDM) sensor data from the Delay Doppler Mapping Instrument aboard the CYGNSS satellite constellation. The primary CYGNSS instrument, also known as the Delay-Doppler Mapping Instrument (DDMI), measures the incoming radio frequency (RF) streams from three input antenna channels (2 nadir oriented science antennas and one zenith oriented navigation antenna) and processes them in real time into DDMs, which are two-dimensional maps of the signal scattered from the Earth surface as a function of propagation time delay and Doppler frequency shift. DDMs are normally sampled over a restricted range of delay and Doppler values centered on the values at the specular point of reflection. The bit resolution of scattered signal strength is also truncated by a lossy data compression algorithm. Full DDMs are sampled over a wider range of delay and Doppler values and retain their full (lossless) bit resolution. Full DDM data records are typically 10-15 min in duration and are initiated by ground commands to coincide with an overpass by one of the spacecraft of a target area of interest. This version supersedes the Full DDM Version 1.0 (https://doi.org/10.5067/CYGNS-L1FDD) for data retrieved during or after August 2018. For data retrieved prior to August 2018, users will need to continue using the Full DDM Version 1.0. This version links the Full DDMs to the CYGNSS v3.0 L1 files (https://doi.org/10.5067/CYGNS-L1X30) whereas the version 1.0 Full DDM linked the Full DDMs to the CYGNSS v2.1 L1 files (https://doi.org/10.5067/CYGNS-L1X21). The calibration of the Full DDMs has not been modified for this release.

Resources

Name Format Description Link
5 148-0373_Full_DDM_netCDF_Data_Dictionary.xlsx https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0373_Full_DDM_netCDF_Data_Dictionary.xlsx
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2F148-0397-1_ATBD_L1_RawIF_FullDDM.pdf
5 https://cygnss.engin.umich.edu%2F
5 https://podaac.jpl.nasa.gov%2Fforum%2Fviewtopic.php%3Ff%3D16%26t%3D1261
5 https://github.com%2Fpodaac%2Fdata-readers
5 https://docs.google.com%2Fspreadsheets%2Fd%2F1OZ5OlQU5mnIL0_cmZhdub8dz6x4JTOTGAWqndkBptO4%2Fedit%3Fusp%3Dsharing
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2F148-0373_Full_DDM_netCDF_Data_Dictionary.xlsx
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2F148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf
5 https://cygnss.engin.umich.edu%2Fwp-content%2Fuploads%2Fsites%2F534%2F2021%2F06%2FCYGNSS_Handbook_April2016.pdf
5 https://doi.org%2F10.1109%2FTGRS.2015.2502245
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fsw%2FCYGNSS_DDM_Processor_MakefileBuild.pdf
5 https://journals.ametsoc.org%2Fdoi%2F10.1175%2FBAMS-D-14-00218.1
5 https://search.earthdata.nasa.gov%2Fsearch%2Fgranules%3Fp%3DC2205121474-POCLOUD
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_1.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_2.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_3.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_4.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_5.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_6.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_7.txt
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2Fatt_tables%2FAttitude_Table_FM_8.txt
5 https://doi.org%2F10.3998%2Fmpub.12741920
5 https://podaac.jpl.nasa.gov%2FPodaac%2Fthumbnails%2FCYGNSS_L1_FULL_DDM_V3.0.jpg
5 https://archive.podaac.earthdata.nasa.gov%2Fpodaac-ops-cumulus-docs%2Fcygnss%2Fopen%2FL1%2Fdocs%2F148-0137_ATBD_L1B_DDMCalibration_Rev2_Aug2018_release.pdf
5 https://podaac.jpl.nasa.gov%2FCitingPODAAC
5 https://cmr.earthdata.nasa.gov%2Fvirtual-directory%2Fcollections%2FC2205121474-POCLOUD
5 https://podaac.jpl.nasa.gov/forum/viewtopic.php?f=16&t=1261
5 https://github.com/podaac/data-readers
5 https://docs.google.com/spreadsheets/d/1OZ5OlQU5mnIL0_cmZhdub8dz6x4JTOTGAWqndkBptO4/edit?usp=sharing
33 148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf
33 CYGNSS_Handbook_April2016.pdf https://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/06/CYGNSS_Handbook_April2016.pdf
5 https://podaac.jpl.nasa.gov/CitingPODAAC
5 https://cygnss.engin.umich.edu/
33 148-0137_ATBD_L1B_DDMCalibration_Rev2_Aug2018_release.pdf https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0137_ATBD_L1B_DDMCalibration_Rev2_Aug2018_release.pdf
33 148-0397-1_ATBD_L1_RawIF_FullDDM.pdf https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/148-0397-1_ATBD_L1_RawIF_FullDDM.pdf
5 https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2205121474-POCLOUD
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2205121474-POCLOUD.iso19115
5 https://journals.ametsoc.org/doi/10.1175/BAMS-D-14-00218.1
5 https://search.earthdata.nasa.gov/search/granules?p=C2205121474-POCLOUD
47 Attitude_Table_FM_1.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_1.txt
47 Attitude_Table_FM_2.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_2.txt
47 Attitude_Table_FM_3.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_3.txt
47 Attitude_Table_FM_4.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_4.txt
47 Attitude_Table_FM_5.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_5.txt
47 Attitude_Table_FM_7.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_7.txt
47 Attitude_Table_FM_8.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_8.txt
5 https://doi.org/10.3998/mpub.12741920
22 CYGNSS_L1_FULL_DDM_V3.0.jpg https://podaac.jpl.nasa.gov/Podaac/thumbnails/CYGNSS_L1_FULL_DDM_V3.0.jpg
5 https://doi.org/10.1109/TGRS.2015.2502245
33 CYGNSS_DDM_Processor_MakefileBuild.pdf https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/sw/CYGNSS_DDM_Processor_MakefileBuild.pdf
47 Attitude_Table_FM_6.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_6.txt

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  • earth-science-radar-spectral-engineering-sensor-counts

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