Jean-Christophe Kucwaj

  • Citations Per Year
Learn More
It is well known that reflected signals from Global Navigation Satellite Systems (GNSS) can be used for altimetry applications, such as monitoring of water levels and determining snow height. Due to the interference of these reflected signals and the motion of satellites in space, the signal-to-noise ratio (SNR) measured at the receiver slowly oscillates.(More)
The estimation of circular parameters can be approached by signal processing using periodic statistic distributions. However, many existing optimal techniques for processing parameters defined on the line do not have optimal circular equivalents. Consequently, unwrapping techniques can be useful to solve circular parameters estimation problems by shifting(More)
GNSS-R techniques use direct and reflected signals coming from GNSS satellites to characterize the reflecting surface. In altimetry applications, the height of the surface is derived from the path difference between these two signals. The aim of this article is to propose a receiver architecture for high rate estimation of this path difference using an(More)
This article is dedicated to the design of a linear-circular regression technique and to its application to ground-based GNSS-Reflectometry (GNSS-R) altimetry. The altimetric estimation is based on the observation of the phase delay between a GNSS signal sensed directly and after a reflection off of the Earth’s surface. This delay evolves linearly with the(More)
For low power GNSS (Global Navigation Satellite System) signals, the most powerful processing approach is the long coherent integration of the signal. This approach supposes that the phase of the GNSS signal is accurately estimated. Unfortunately, the phase measurements may be very noisy and subject to cycle slips. The aim of this paper is to propose a new(More)
Global Navigation Satellite Systems signals can be used in bi-static radar systems in order to get altimetric measurements. With a single classic GNSS ground-based receiver processing the combination of the signals coming directly and after one reflection to the receiving antennas, the Interference Pattern Technique allows the computation of the height of(More)
  • 1