Please Note: This dataset is retired, and is displayed for archive purposes only, and may not reflect the most updated information.
However, a newer version exists.
CYGNSS Level 1 Science Data Record Version 3.1 Controlled. DOI: https://doi.org/10.5067/CYGNS-L1X31
For Version History information click here >>
However, a newer version exists.
CYGNSS Level 1 Science Data Record Version 3.1 Controlled. DOI: https://doi.org/10.5067/CYGNS-L1X31
For Version History information click here >>
CYGNSS Level 1 Science Data Record Version 2.0
(CYGNSS_L1_V2.0)
13 Publications Cited this Dataset
Citation metrics available for years (2014-2022)
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Publications citing CYGNSS Level 1 Science Data Record Version 2.0
Citation metrics available for years (2014-2022)
Year | Citation |
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2018 | NASA CYGNSS-REFLECTOMETER AND SMAP-RADIOMETER FUNCTIONAL CORRELATION OVER LAND SURFACES, N/A |
2018 | [22] CYGNSS. 2017. CYGNSS Level 1 Science Data Record Ver- sion 2.0. Ver. 2.0. PO.DAAC, CA, USA. [Online]. Available http://dx.doi.org/10.5067/CYGNS-L1X20. Accessed on: Jan. 05, 2018. Sensitivity of CyGNSS bistatic reflectivity and SMAP microwave radiometry brightness temperature to geophysical parameters over land surfaces, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ,https://doi.org/10.1109/JSTARS.2018.2856588 |
2018 | 1. CYGNSS Level 2 Science Data Record Version 2.0. PO.DAAC, CA, USA. 2017. [Online]. Available: http://dx.doi.org/10.5067/CYGNS-L2X20. Accessed on: Jan. 15, 2018. An assessment of CYGNSS normalized bistatic radar cross section calibration, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ,https://doi.org/10.1109/JSTARS.2018.2849323 |
2018 | [8] CYGNSS. CYGNSS Level 1 Science Data Record Version 2.0. Ver. 2.0. PO.DAAC, CA, USA, 2017. Dataset accessed 2018-02-06 at http://dx.doi.org/10.5067/CYGNS-L1X20. Comparison of Wide Bandwidth Conventional and Interferometric GNSS-R Techniques for Possible CYGNSS Follow-On Mission, IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium ,https://doi.org/10.1109/IGARSS.2018.8517480 |
2018 | [13] CYGNSS. 2017. CYGNSS Level 1 Science Data Record Version 1.0. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [2018-01-05] at http://dx.doi.org/10.5067/CYGNS-L1X20. Geophysical Relationship between Cygnss GNSS-R Bistatic Reflectivity and Smap Microwave Radiometry Brightness Temperature Over Land Surfaces, IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium ,https://doi.org/10.1109/IGARSS.2018.8519565 |
2018 | 25. CYGNSS. CYGNSS Level 1 Science Data Record Version 2.0. 2017. PO.DAAC, CA, USA. Available online: http://dx.doi.org/10.5067/CYGNS-L1X20 (accessed on 3 May 2018). Impact of the Elevation Angle on CYGNSS GNSS-R Bistatic Reflectivity as a Function of Effective Surface Roughness over Land Surfaces, Remote Sensing ,https://doi.org/10.3390/rs10111749 |
2018 | 5. CYGNSS. 2017. CYGNSS Level 1 Science Data Record Version 1.0. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [2018-01-05] at http://dx.doi.org/10.5067/CYGNS-L1X20. Impact of the Elevation Angle on Cygnss GNSS-R Reflectivity over Different Scattering Media over Land and Ocean, IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium ,https://doi.org/10.1109/IGARSS.2018.8519402 |
2019 | CYGNSS. 2017. CYGNSS Level 1 Science Data Record. Ver. 2.1. PO.DAAC, CA, USA. [Online]. Available http://dx.doi.org/10.5067/CYGNS-L1X20. (11/9/2019) Biomass estimation over tropical rainforests using GNSS-R on-board the CyGNSS microsatellites constellation, IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium ,https://doi.org/10.1109/IGARSS.2019.8900213 |
2019 | [6] CYGNSS. 2017. CYGNSS Level 1 Science Data Record. Ver. 2.1. PO.DAAC, CA, USA. [Online]. Available http://dx.doi.org/10.5067/CYGNS-L1X20 (23/04/2019). Effects of Rough Topography in GNSS-R: A Parametric Study Based On a Digital Elevation Model, IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium ,https://doi.org/10.1109/IGARSS.2019.8898381 |
2019 | CYGNSS. CYGNSS Level 1 Science Data Record. Ver. 2.1. PO.DAAC, CA, USA. 2017. Available online: http://dx.doi.org/10.5067/CYGNSL1X20 (accessed on 11 May 2019). First Evaluation of Topography on GNSS-R: An Empirical Study Based on a Digital Elevation Model, Remote Sensing ,https://doi.org/10.3390/rs11212556 |
2019 | CYGNSS. 2017. CYGNSS Level 1 Science Data Record. Ver. 2.1. PO.DAAC, CA, USA. [Online]. Available http://dx.doi.org/10.5067/CYGNS-L1X20. (11/9/2019) On the Use of GNSS-R for Biomass Studies Over Tropical Forests 6th Workshop on Advanced RF Sensors and Remote Sensing Instruments, ARSI'19 & 4th Ka …, European Space Agency (ESA) 6th Workshop on Advanced RF Sensors and Remote Sensing Instruments |
2020 | CYGNSS. (2017). Level 1 Science Data Record Version 2.0. Ver. 2.0. PO.DAAC. CA, USA. Accessed: 09-21-2018. [Online]. Available: http://dx.doi.org/10.5067/CYGNS-L1X20 Improved GNSS-R ocean surface altimetry with CYGNSS in the seas of Indonesia, IEEE Transactions on Geoscience and Remote Sensing ,https://doi.org/10.1109/TGRS.2020.2973079 |
2021 | The potential of spaceborne GNSS reflectometry for soil moisture, biomass, and freeze–thaw monitoring: Summary of a European Space Agency-funded study, Journal ,10.1109/MGRS.2021.3115448 |
DOI | 10.5067/CYGNS-L1X20 |
Short Name | CYGNSS_L1_V2.0 |
Description | This Level 1 (L1) dataset contains the Version 2.0 geo-located Delay Doppler Maps (DDMs) calibrated into Power Received (Watts) and Bistatic Radar Cross Section (BRCS) expressed in units of m^2 from the Delay Doppler Mapping Instrument aboard the CYGNSS satellite constellation. This version supersedes Version 1.1. The L1 dataset contains a number of other engineering and science measurement parameters, including sets of quality flags/indicators, error estimates, and bias estimates as well as a variety of orbital, spacecraft/sensor health, timekeeping, and geolocation parameters. At most, 8 netCDF data files (each file corresponding to a unique spacecraft in the CYGNSS constellation) are provided each day; under nominal conditions, there are typically 6-8 spacecraft retrieving data each day, but this can be maximized to 8 spacecraft under special circumstances in which higher than normal retrieval frequency is needed (i.e., during tropical storms and or hurricanes). Latency is approximately 6 days (or better) from the last recorded measurement time. The Version 2.0 release represents the first science-quality release that has moved beyond the previous "Provisional" releases (i.e., Version 1.0 and 1.1). Here is a summary of improvements that reflect the quality of the Version 2.0 data release: 1) more accurate estimates of the transmitter power of each GPS satellite; 2) more accurate estimates of the transmitter antenna radiation patterns of each GPS satellite; 3) more accurate determination of the delay and Doppler coordinates of the specular point in each DDM; 4) Correction for variations in the GPS antenna gain pattern across the DDM (v1.1 assumed the gain at the specular point for all parts of the DDM); 5) Correction for variations in the GPS signal propagation range with altitude of the CYGNSS satellites (v1.1 assumed a constant range consistent with the average orbit altitude); 6) more accurate determination of the receiver antenna radiation patterns on the port and starboard side of each CYGNSS satellite; 7) better quality control flagging for increased uncertainty in CYGNSS satellite attitude knowledge during start tracker sun outages. |
Version | 2.0 |
Dataset Type | DEPRECATED |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Please contact podaac@podaac.jpl.nasa.gov for more info.
Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
Citation | CYGNSS. 2017. CYGNSS Level 1 Science Data Record Version 2.0. Ver. 2.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/CYGNS-L1X20
For more information see Data Citations and Acknowledgments.
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Journal Reference | Ruf, C., R. Atlas, P. Chang, M. Clarizia, J. Garrison, S. Gleason, S. Katzberg, Z. Jelenak, J. Johnson, S. Majumdar, A. OaEUR(TM)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. . |
Version | Dataset | Version Date | Status | |
---|---|---|---|---|
3.1 | CYGNSS Level 1 Science Data Record Version 3.1 Controlled | Present | ACTIVE | |
3.0 | CYGNSS Level 1 Science Data Record Version 3.0 - Quarantined | Present | COMPLETE | |
3.0 | CYGNSS Level 1 Science Data Record Version 3.0 | 2022-02-28 | ACTIVE | 2022-02-28T20:17:00.000Z |
2.1 | CYGNSS Level 1 Science Data Record Version 2.1 | 2022-05-09 | ACTIVE | 2022-05-09T18:49:00.000Z |
2.0 | CYGNSS Level 1 Science Data Record Version 2.0 | Present | RETIRED. | |
1.1 | CYGNSS Level 1 Science Data Record Version 1.1 | Present | RETIRED. | |
1.0 | CYGNSS Level 1 Science Data Record Version 1.0 | Present | RETIRED. | |