CYGNSS Level 1: Calibrated Raw Intermediate Frequency Data for Wind Speed Measurement

The CYGNSS Level 1 Calibrated Raw IF Version 1.0 dataset contains the first release of calibrated raw intermediate frequency data from the CYGNSS mission. CYGNSS is a NASA Earth System Science Pathfinder Mission launched on 15 December 2016, consisting of eight micro-satellites providing nearly gap-free Earth coverage. The dataset includes signal coherence detectors, scattered signal strength products, and high-resolution Delay Doppler Maps.

Use Cases

• Detect land-water transitions based on signal strength time series at 2 ms and 50 ms resolutions
• Analyze surface wind speeds in tropical cyclone cores based on the mission's primary purpose
• Identify inland water bodies using the suite of coherence detection methods
• Study signal coherence using established detectors like power-ratio and complex zero-Doppler waveforms

Strengths

• Data originates from a constellation of eight satellites providing nearly gap-free Earth coverage
• Includes multiple signal strength products derived using six different incoherent integration times
• Delay Doppler Maps are generated with high delay (1/16 chip) and Doppler (50 Hz) resolution

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment

Provenance

Source

CYGNSS Science Team of the University of Michigan and National Aeronautics and Space Administration

Collection Method

Data collected by the CYGNSS constellation of eight micro-satellites.

Freshness

Last updated 2026-03-13 03:20:00.431981; freshness should be verified

Geography

Global coverage from satellites with an orbital inclination of approximately 35° from the equator.