CYGNSS Level 1 Full Delay Doppler Map Data Record

Description

This Level 1 (L1) dataset contains the 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.

Resources

Name Format Description Link
5 https://podaac.jpl.nasa.gov%2FCitingPODAAC
5 https://podaac.jpl.nasa.gov%2Fforum%2Fviewtopic.php%3Ff%3D16%26t%3D1261
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://github.com%2Fpodaac%2Fdata-readers
5 https://cygnss.engin.umich.edu%2F
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://docs.google.com%2Fspreadsheets%2Fd%2F1OZ5OlQU5mnIL0_cmZhdub8dz6x4JTOTGAWqndkBptO4%2Fedit%3Fusp%3Dsharing
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://cygnss.engin.umich.edu%2Fwp-content%2Fuploads%2Fsites%2F534%2F2021%2F06%2FCYGNSS_Handbook_April2016.pdf
5 https://github.com%2Fpodaac%2FCYGNSS-Full-DDMs-Code
5 https://doi.org%2F10.1109%2FTGRS.2015.2502245
5 http://cygnss.engin.umich.edu%2Fwp-content%2Fuploads%2Fsites%2F534%2F2021%2F07%2F148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf
5 https://cmr.earthdata.nasa.gov%2Fvirtual-directory%2Fcollections%2FC2036882030-POCLOUD
5 https://search.earthdata.nasa.gov%2Fsearch%2Fgranules%3Fp%3DC2036882030-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_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_8.txt
5 https://doi.org%2F10.3998%2Fmpub.12741920
5 https://podaac.jpl.nasa.gov%2FPodaac%2Fthumbnails%2FCYGNSS_L1_FULL_DDM.jpg
5 http://cygnss.engin.umich.edu%2Fwp-content%2Fuploads%2Fsites%2F534%2F2021%2F07%2F148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf
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_7.txt
5 https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2036882030-POCLOUD
5 https://podaac.jpl.nasa.gov/CitingPODAAC
5 https://podaac.jpl.nasa.gov/forum/viewtopic.php?f=16&t=1261
53 148-0373_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://github.com/podaac/data-readers
5 https://cygnss.engin.umich.edu/
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://docs.google.com/spreadsheets/d/1OZ5OlQU5mnIL0_cmZhdub8dz6x4JTOTGAWqndkBptO4/edit?usp=sharing
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
33 148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf
5 https://journals.ametsoc.org/doi/10.1175/BAMS-D-14-00218.1
33 CYGNSS_Handbook_April2016.pdf https://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/06/CYGNSS_Handbook_April2016.pdf
5 https://github.com/podaac/CYGNSS-Full-DDMs-Code
21 https://doi.org/10.1109/TGRS.2015.2502245
33 148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf
5 https://search.earthdata.nasa.gov/search/granules?p=C2036882030-POCLOUD
5 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
5 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
5 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
5 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
5 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
5 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
5 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
5 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
21 https://doi.org/10.3998/mpub.12741920
22 CYGNSS_L1_FULL_DDM.jpg https://podaac.jpl.nasa.gov/Podaac/thumbnails/CYGNSS_L1_FULL_DDM.jpg
5 https://podaac.jpl.nasa.gov/CitingPODAAC
5 https://podaac.jpl.nasa.gov/forum/viewtopic.php?f=16&t=1261
53 148-0373_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://github.com/podaac/data-readers
5 https://cygnss.engin.umich.edu/
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://docs.google.com/spreadsheets/d/1OZ5OlQU5mnIL0_cmZhdub8dz6x4JTOTGAWqndkBptO4/edit?usp=sharing
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
33 148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf
5 https://journals.ametsoc.org/doi/10.1175/BAMS-D-14-00218.1
33 CYGNSS_Handbook_April2016.pdf https://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/06/CYGNSS_Handbook_April2016.pdf
5 https://github.com/podaac/CYGNSS-Full-DDMs-Code
21 https://doi.org/10.1109/TGRS.2015.2502245
33 148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf
5 https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2036882030-POCLOUD
5 https://search.earthdata.nasa.gov/search/granules?p=C2036882030-POCLOUD
5 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
5 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
5 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
5 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
5 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
5 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
5 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
5 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
21 https://doi.org/10.3998/mpub.12741920
22 CYGNSS_L1_FULL_DDM.jpg https://podaac.jpl.nasa.gov/Podaac/thumbnails/CYGNSS_L1_FULL_DDM.jpg
5 https://cygnss.engin.umich.edu/
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.jpg https://podaac.jpl.nasa.gov/Podaac/thumbnails/CYGNSS_L1_FULL_DDM.jpg
5 https://journals.ametsoc.org/doi/10.1175/BAMS-D-14-00218.1
5 https://podaac.jpl.nasa.gov/CitingPODAAC
5 https://podaac.jpl.nasa.gov/forum/viewtopic.php?f=16&t=1261
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://github.com/podaac/data-readers
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://docs.google.com/spreadsheets/d/1OZ5OlQU5mnIL0_cmZhdub8dz6x4JTOTGAWqndkBptO4/edit?usp=sharing
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
33 148-0136_ATBD_L1A_DDMCalibration_Rev2_Aug2018_release.pdf http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0136_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://github.com/podaac/CYGNSS-Full-DDMs-Code
5 https://doi.org/10.1109/TGRS.2015.2502245
33 148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf http://cygnss.engin.umich.edu/wp-content/uploads/sites/534/2021/07/148-0137_ATBD-L1B-DDM-Calibration_R3_release.pdf
5 https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2036882030-POCLOUD
5 https://search.earthdata.nasa.gov/search/granules?p=C2036882030-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_6.txt https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/cygnss/open/L1/docs/att_tables/Attitude_Table_FM_6.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
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2036882030-POCLOUD.iso19115

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