Description
This Level 1 (L1) dataset contains the Raw Intermediate Frequency (IF) 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), digitizes the incoming radio frequency (RF) streams from three input antenna channels (2 nadir oriented science antennas and one zenith oriented navigation antenna). The Raw IF data included in this data record are the raw sensor counts, retrieved prior to any digital signal processing, thus providing the highest possible resolution in delay and doppler space allowing for the construction of high resolution Delay Doppler Map (DDM) data. Raw IF data records are 30-90 sec in duration, with 60 sec being typical, 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 |
|---|---|---|---|
| View documentation related to this dataset | Level 1A DDM Calibration Algorithm Theoretical Basis Document, S. Gleason, CYGNSS Project Document 148-0136, Rev 2, 20 Aug. 2018. | Open resource | |
| View this dataset's user's guide | HTML | CYGNSS Raw IF Dataset File Formatting and Specifications Document | Open resource |
| View this dataset's user's guide | Algorithm Theoretical Basis Document (ATBD) for the CYGNSS Level 1 Full DDM and Raw IF Datasets, S. Gleason, S. Musko, CYGNSS Project Document 148-0397-01, Rev 1, 22 June 2020 | Open resource | |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View documentation related to this dataset | HTML | Updated Monthly | Open resource |
| View this dataset's data recipes | HTML | Matlab code to plot Raw IF Data over the land. | Open resource |
| View this dataset's data recipes | HTML | Matlab code to plot Raw IF Data over the globe. | Open resource |
| View this dataset's data recipes | HTML | Matlab code to read Raw IF Metadata files. | Open resource |
| View this dataset's user's guide | 60 second FM8 Raw IF data collection over Hurricane Harvey Example | Open resource | |
| Download this dataset through a directory map | HTML | HTTPS endpoint for data browse and download | Open resource |
| View documentation related to this dataset | HTML | CYGNSS Mission Page at University of Michigan | Open resource |
| View documentation related to this dataset | Deriving Surface Winds from Tropical Cyclones | Open resource | |
| View this dataset's user's guide | HTML | CYGNSS Targeting Information for Raw IF Data | Open resource |
| View this dataset's publications | HTML | 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. | Open resource |
| View this dataset's user's guide | HTML | CYGNSS Handbook | Open resource |
| View this dataset's publications | HTML | 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. | Open resource |
| View this dataset's data citation policy | HTML | Data Use and Citation Policy | Open resource |
| View this dataset's documented anomalies | HTML | Forum Post Capturing Changes to CYGNSS Sampling Rate | Open resource |
| Get a related visualization | JPG | Thumbnail | Open resource |
| Google Scholar search results | HTML | Search results for publications that cite this dataset by its DOI. | Open resource |
| Download this dataset through Earthdata Search | HTML | Browse granule search results in Earthdata Search | Open resource |