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The detection of events in monitored areas is one of the most common tasks employed in military and security sensor applications. Magnetic sensors represent a part of a multisensor system and they are mainly dedicated for a detection of variety classes of vehicles. The vehicle movement has an impact on the Earth's magnetic field in monitored area; therefore this magnetic perturbation can be measured...
The intensive research and development efforts in the area of unmanned aerial vehicles (UAV) detection for security applications is observed in the last decade. The published research results are focused on applications in particular domains (e.g. acoustic, ultrasonic, optical, infrared, radiofrequency…) whereas the probability characteristics for each assumed application evaluation are needed. This...
A modern pulse radar uses more and more complex waveforms. Some waveforms are developed intentionally to make their interception almost impossible or jamming resistant. The main distinctive features of radar signal are hidden in its intra-pulse structure. The intra-pulse modulation analysis of a detected signal is the major task of ELINT/ESM systems, too. As a result of measurement, for each pulse...
A modern pulse radar uses more and more complex waveforms. Some waveforms are developed intentionally to make their interception almost impossible or jamming resistant. The main distinctive features of radar signal are hidden in its intra-pulse structure. The intra-pulse modulation analysis of a detected signal is the major task of ELINT/ESM systems, too. As a result of measurement, for each pulse...
Modern radar uses more and more complex waveforms. Some waveforms are developed intentionally to make their intercept almost impossible. The main distinctive features of radar signal are hidden in its intrapulse structure. The intrapulse modulation analysis of a detected signal is a major task of an ELINT/ESM system. As a result of measurement, for each pulse specific description, so called pulse...
The antenna is an essential part of many electronic systems. Selecting the best antenna may be very important, but selecting the right antenna can be a difficult task, because of variation in the way manufacturers specify and describe them. This paper introduces a method to measure an antenna gain and antenna factor of small loop antennas. It is well known, that the antenna measurement in an anechoic...
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