This paper presents a concept and initial results of testing a vision system for satellite proximity operations. The system uses natural features on the satellite surfaces and does not require any artificial markers or targets for its operation. The system computes motion of unknown objects, and using object models computes their positions and orientations (pose), and tracks them in images sequ...

Abstract This paper presents the intelligent techniques approach for flood monitoring using Synthetic Aperture Radar (SAR) satellite images. We applied artificial neural networks and Self-Organizing Kohonen Maps (SOMs), to SAR image segmentation and classification. Our approach was used to process data from different SAR satellite instruments (ERS-2/SAR, ENVISAT/ASAR, RADARSAT-1/2) for differen...

[1] Strong electron heating by the injection of highly powerfu l HF waves can lead to the format ion of ionospheric plasma density perturbations that stretch along the magnetic field lines. Those density perturbations can serve as ducts for guiding natural and artificial ELF/VLF waves. This paper presents a theoretical model of duct formation due to HF heating of the ionosphere. The model is ba...