Large numbers of bats are killed by collisions with wind turbines, and there is at present no direct method of reducing or preventing this mortality. We therefore determine whether the electromagnetic radiation associated with radar installations can elicit an aversive behavioural response in foraging bats. Four civil air traffic control (ATC) radar stations, three military ATC radars and three...

Airborne Inverse Synthetic Aperture Radar systems provide excellent surveillance abilities for imaging naval targets. Considering this as a maritime surveillance threat we derive a simulator system in this paper that can be used to synthesize false targets that would appear as credible military fleets. The resulting electromagnetic signature synthesis allows the implementation of returns that a...

Workers in certain occupations such as the military may be exposed to technical radiofrequency radiation exposure above current limits, which may pose a health risk. The present investigation intended to find the effect of chronic electromagnetic field (EMF) exposure from radar on plasma catecholamines in the military workforce. In the study, 166 male personnel selected randomly were categorize...

I] Techniques of low-level machine intelligence, originally developed at Lincoln Laboratory to recognize military ground vehicles obscured by camouflage and foliage, are being used to detect gust fronts in Doppler weather radar imagery. This Machine Intelligent Gust Front Algorithm (MIGFA) is part of a suite of hazardous-weather-detection functions being developed under contract with the Federa...

Phased arrays have long been used by the military for radar applications, but have only been recently applied to consumer applications. In a phased array system, one or more narrow beams are generated by transmitting (or receiving) a common RF signal that is phase shifted at the output of each antenna in the array such that the direction of the beams can be varied by controlling the phase diffe...

The problem of continuous position availability is one of the most important issues connected with the human activity at sea. Because the availability of satellite navigational systems can be limited in some cases, e.g. during military operations, one has to consider additional methods of acquiring information about the ship’s position. In this paper one of these methods is presented, which is ...

With the advent of high-frequency radio frequency (RF) circuits and components technology, millimeter-wave (MMW) radars are being proposed for a large number of military and civilian applications. Accurate and high-resolution characterization of the polarimetric radar backscatter responses of both clutter and man-made targets at MMW frequencies is essential for the development of radar systems ...

In present scenario GPS is widely used to provide extremely accurate position information for navigation. From, where the GPS does not give continuous localization in environments where signal blockages are present, Inertial Navigation System comes into action. Because of sensors present in INS and time integration process, errors get accumulated over time. Henceforth, an aiding system is integ...

In order to improve upon automated sensor performance for security applications in public and private settings, numerous alternative sensor designs have been developed to provide affordable and effective detection and identification performance. Radio frequency (RF) sensors offer a balanced approach to system design for a wide variety of geometries and threat targets. These threat targets inclu...