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Physics Seminar - Nina Calderalla

Wednesday, 12 May 2021

Physics Department

Nina Caldarella

PhD student

Department of Physics

"Synthetic Aperture Radar: Point Target Simulation and Ocean Analysis"

Synthetic Aperture Radar (SAR) is a high-resolution mapping technique, that can be operated from space. With the recent emergence of SAR in New Space and the public availability of the data through ESA’s Sentinel-1 mission, the technique has come to an operational status in certain remote sensing applications. Yet it has great potential for a wider range of applications that are being targeted with upcoming missions. SAR simulators have long been an essential tool for SAR processor design as well as hardware design to advance the SAR. This includes simulation of the raw 2-D signal based on the radar specifications and observation geometry and the focusing of these data by matched filtering. An example of an advanced SAR mode is bidirectional along-track interferometry with TanDEM-X. Bidirectional SAR mode has two beams squinted apart in azimuth. 2-D velocity of the ocean surface is derived from these experimental data that shows geophysical characteristics. Joint inversion of the wind- and surface current vectors from bidirectional along-track interferometric data retrieves the total surface currents. This provides an experimental base for the future ESA Earth Explorer mission Harmony.

WHEN: Wednesday 12 May 2021
WHERE: Room 314, Science 3 Building
TIME: 12.00 pm–1.00 pm

All interested are welcome to attend