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CYGNSS Level 1 Raw Intermediate Frequency Data Record

Published by NASA/ESSP/UMICH/CYGNSS;NASA/JPL/PODAAC | National Aeronautics and Space Administration | Catalog Last Checked: June 23, 2026 at 08:49 PM | Dataset Last Updated: June 22, 2026
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.

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Complete Metadata
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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.
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identifier 10.5067/CYGNS-L1RIF
keyword 
[
  "earth-science-radar-spectral-engineering-sensor-counts"
]
license https://www.usa.gov/government-works
modified 2026-06-22
programCode 
[
  "026:000"
]
publisher 
{
  "name": "NASA/ESSP/UMICH/CYGNSS;NASA/JPL/PODAAC",
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spatial 
"["CARTESIAN", [{"NorthBoundingCoordinate": 40.0, "WestBoundingCoordinate": -180.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -40.0}]]"
theme 
[
  "Earth Science"
]
title CYGNSS Level 1 Raw Intermediate Frequency Data Record

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