Search Results for author: Jürgen Kusche

Found 4 papers, 0 papers with code

Potential and scientific requirements of optical clock networks for validating satellite gravity missions

no code implementations4 Dec 2020 Stefan Schröder, Simon Stellmer, Jürgen Kusche

Our hypothesis is that a clock network with collocated GNSS receivers spread over Europe - for which the physical infrastructure is already partly in place - would enable us to determine temporal variations of the Earth's gravity field at time scales of days and beyond, and thus provide a new means for validating satellite missions such as GRACE-FO or a future gravity mission.

Geophysics

Ocean Eddy Identification and Tracking using Neural Networks

no code implementations20 Mar 2018 Katharina Franz, Ribana Roscher, Andres Milioto, Susanne Wenzel, Jürgen Kusche

We show the detection and tracking results on sea level anomalies (SLA) data from the area of Australia and the East Australia current, and compare our two eddy detection and tracking approaches to identify the most robust and objective method.

Object Tracking

Sea Level Anomaly Prediction using Recurrent Neural Networks

no code implementations19 Oct 2017 Anne Braakmann-Folgmann, Ribana Roscher, Susanne Wenzel, Bernd Uebbing, Jürgen Kusche

We develop a combination of a convolutional neural network (CNN) and a recurrent neural network (RNN) to ana-lyse both the spatial and the temporal evolution of sea level and to suggest an independent, accurate method to predict interannual sea level anomalies (SLA).

STAR: Spatio-Temporal Altimeter Waveform Retracking using Sparse Representation and Conditional Random Fields

no code implementations22 Sep 2017 Ribana Roscher, Bernd Uebbing, Jürgen Kusche

We show that STAR enables the derivation of sea surface heights over the open ocean as well as over coastal regions of at least the same quality as compared to existing retracking methods, but for a larger number of cycles and thus retaining more useful data.

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