Low earth orbit (LEO) satellites are capable of receiving Global Navigation Satellite Systems (GNSS) signals reflected off the surface of the Earth to infer properties of the reflecting surface itself, in a technique known as GNSS-Reflectometry (GNSS-R). However, converting surface reflectivity ...
(2018) have shown that this approach matches well with the observed sky and sun radiation scattering in the L-band, and is consistent with GNSS-Reflectometry studies (e.g., Garrison et al., 2002). Independently, the JPL PALS (Wilson et al., 2003, Wilson et al., 2004) and the ESA/...
A Fram Strait Experiment: Sensing Sea Ice Conditions using Shipborne GNSS Reflectometry Two antenna links are starbord-looking with right- and left-handed circular polarization to detect the reflected signal. One right-handed antenna is up-looking for reference to the direct signal. In-phase and ...
G. Foti et al., "Spaceborne GNSS reflectometry for ocean winds: First results from the UK TechDemoSat-1 mission," Geophys. Res. Lett., vol. 42, no. 13, pp. 5435-5441, Jul. 2015.FOTI G,GOMMENGINGER C,JALES P,et al.Spaceborne GNSS Reflectometry for Ocean Winds:First Results from ...
GNSS reflectometryOcean surface currentsOcean surface roughnessSmall satellites remote sensingWind–current interactions2022 The Author(s)The detectability of ocean surface currents in global navigation satellite system reflectometry (GNSS-R) observations is analyzed. We use a large dataset of spaceborne GNSS...
Spaceborne GNSS receivers also have an interesting application in remote sensing. In GNSSReflectometry the signals are detected after they have reflected from the Earth to determine properties of the surface, for example ocean wave conditions. The opportunity to use GPS signals for remote sensing ...
In this paper, a comparative study of spaceborne Global Navigation Satellite System (GNSS)-Reflectometry for ship detection applications is provided. The analysis is conducted by evaluating the impact of 1) the acquisition geometry and 2) the received signal polarization on ship detectability in GNSS...
GNSS Reflectometryremote sensingTechDemoSat‐1We present the first examples of Global Navigation Satellite Systems-Reflectometry (GNSS-R) observations of hurricanes using spaceborne data from the UK TechDemoSat-1 (TDS-1) mission. We confirm that GNSS-R signals can detect ocean condition changes in ...
This paper presents a unique technique which uses a spaceborne GNSS receiver system to measure GPS EIRP in real time and then uses it to improve the calibration of NBRCS for GNSS-Reflectometry observations. It includes two steps: precise gain calibration of satellite GNSS antenna using on-orbit ...
multi-GNSScomplex waveformsignal-to-noise ratio (SNR)coherent integration timeIn recent years, Global Navigation Satellite System Reflectometry (GNSS-R) technology has made considerable progress with the increasing of GNSS-R satellites in orbit, the improvements of GNSS-R data processing t...