Browsing by Author "Torvik, Børge"
Now showing items 1-5 of 5
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Classification of birds and UAVs based on radar polarimetry
Torvik, Børge; Olsen, Karl Erik; Griffiths, Hugh (2016)This letter aims to show the potential of using polarimetric parameters to distinguish between large birds and unmanned aerial vehicles (UAVs) of comparable size in the context of a modern long-range air defense radar. ... -
Compressed Sensing with Interleaving Slow-Time Pulses and Hybrid Sparse Image Reconstruction
Akhtar, Jabran; Torvik, Børge; Olsen, Karl Erik (2017)This paper explores a type of hybrid sparse reconstruction technique for modern multifunction task scheduling radars and on following range-Doppler plots. A compressed sensing (CS) framework is devised to emit and then ... -
Deep temporal detection - A machine learning approach to multiple-dwell target detection
Gusland, Daniel; Rolfsjord, Sigmund Johannes Ljosvoll; Torvik, Børge (2020)Detecting small targets, such as an Unmanned Aerial Vehicle (UAV) in high clutter and non-homogeneous environments is challenging for a radar system. Traditional Constant False Alarm Rate (CFAR) detectors have suboptimal ... -
Imaging radar for navigation and surveillance on an autonomous unmanned ground vehicle capable of detecting obstacles obscured by vegetation
Gusland, Daniel; Torvik, Børge; Finden, Erlend; Gulbrandsen, Fredrik; Smestad, Ragnar (2019-09-16)The Norwegian Defence Research Establishment (FFI), has developed a multi purpose radar demonstrator for Intelligence, Surveillance and Reconnaissance (ISR) on the Off-road Light Autonomous Vehicle (OLAV) platform. The ... -
Sparse Phase Estimation and Processing of Independent Coherent Processing Intervals
Akhtar, Jabran; Torvik, Børge; Olsen, Karl Erik (2017)Radars employing electronically steering arrays are capable of instantaneously altering the direction of the beam along with other parameters. This flexibility offers great opportunities to a radar as it may e.g. divide ...