CYGNSS Mission


CYGNSS launch and early orbit ops.

Discovery Canada put together this nice overview of the CYGNSS mission launch and early on-obit operations for their Mighty Planes series.

GRAPHIC: The CYGNSS mission team is comprised of scientists from the University of Michigan, Southwest Research Institute, Surrey Satellite Technology, U.S., L.L.C.
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Latest News

October 25, 2019

A new measurement capability by CYGNSS is featured in a recent article in Remote Sensing titled "Response to Variations in River Flowrate by a Spaceborne GNSS-R River Width Estimator". Measurements made by CYGNSS during river overpasses are used to estimate its width. The river's associated GNSS-R width (AGW) is found to be highly correlated with in situ measurements of river flowrate. Potential applications of AGW measurements include better monitoring of stream flow and prediction of flooding on a global scale.

The paper was authored by former CLaSP undergrad and current SRI research scientist April Warnock and Prof. Chris Ruf of CLaSP. The paper is avalable here: https://doi.org/10.3390/rs11202450

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NASA’s Weather Prediction Project

The Cyclone Global Navigation Satellite System (CYGNSS) aims to improve extreme weather prediction.

CYGNSS will use a constellation of eight small satellites carried to orbit on a single launch vehicle. In orbit, CYGNSS’s eight micro-satellite observatories will receive both direct and reflected signals from Global Positioning System (GPS) satellites. The direct signals pinpoint CYGNSS observatory positions, while the reflected signals respond to ocean surface roughness, from which wind speed is retrieved.

The mission will study the relationship between ocean surface properties, moist atmospheric thermodynamics, radiation and convective dynamics to determine how a tropical cyclone forms and whether or not it will strengthen, and if so by how much. This will advance forecasting and tracking methods.

CYGNSS data will enable scientists, for the first time, to probe key air-sea interaction processes that take place near the inner core of the storms, which are rapidly changing and play large roles in the genesis and intensification of hurricanes.

The CYGNSS mission launched on December 15, 2016!

CYGNSS mission is comprised of 8 Low Earth Orbiting (LEO) spacecraft (S/C) that receive both direct and reflected signals from GPS satellites The CYGNSS mission is comprised of 8 Low Earth Orbiting (LEO) spacecraft (S/C) that receive both direct and reflected signals from GPS satellites.

CYGNSS is part of the
NASA Earth System Science Pathfinder program.



NASA Ames Research Center
University of Michigan
Southwest Research Institute of Texas
Surrey Satellite Technology of Colorado