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Man-made noise is often a factor that limits the range and data rate for communication in the HF, VHF and the lower UHF bands. Man-made noise is also a limiting factor for what can be achieved by a Signal Intelligence (SI) system or an eavesdropper. The ITU-R P.372, frequently used in link budget calculations, is based on extensive measurements carried out in the 70s. Most of the work was focused...
We consider GNSS meaconing detection with multiple COTS receivers. Recently proposed detectors that use the receivers' reported positions are extended, to allow for the use of additional metrics, such as pseudo range. An actual meaconing attack is performed to evaluate the performance of the proposed detectors, using either position or pseudo range data. The attack is performed with a GPS simulator,...
Precipitation in the form of snow or rain could severely degrade the performance of large antenna arrays, in particular if knowledge about the beam shape and pointing direction in absolute numbers is necessary. In this paper, a method of estimating the far-field of each individual antenna element using the equivalent electric current approach is presented. Both a least squares estimator and a Kalman...
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