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Predators with a visual acuity of 0.11 degrees (of arc) would be able to detect individual photophores of the Madeira lanternfish Ceratoscopelus maderensis at up to 2 metres (2.2 yd), and they would be able to see the general layout of the photophore clusters with poorer visual acuity.
Passive radar (also referred to as parasitic radar, passive coherent location, passive surveillance, and passive covert radar) is a class of radar systems that detect and track objects by processing reflections from non-cooperative sources of illumination in the environment, such as commercial broadcast and communications signals.
The “rarely seen” predators were spotted off the California coast near San Diego. Boaters witness ‘unbelievable spectacle’ when predators attack sea creature. See it
Since then, the SPG-62 has been placed in service with many U.S. and foreign navy ships that have the Aegis Combat System. The SPG-62's role in Aegis fire control is to illuminate targets in the terminal interception phase. First, the ship's main search radars—either the AN/SPY-1 or the AN/SPY-6—detect and track the target. The Mk 99 FCS ...
Scientists have some good news for rats and some bad news for city dwellers. Rat populations are rising in cities including Washington, D.C., and San Francisco, reports a study released Friday ...
N obody expected anything special when the squadron of Navy F/A-18 fighter jets headed out for routine aerial maneuvers off of the coast of Virginia Beach one day in 2013. The F/A-18s, a Naval ...
Predators need not locate their host directly: Kestrels, for instance, are able to detect the faeces and urine of their prey (which reflect ultraviolet), allowing them to identify areas where there are large numbers of voles, for example. This adaptation is essential in prey detection, as voles are quick to hide from such predators.
The AN/SPG-51 is an American tracking / illumination fire-control radar for RIM-24 Tartar and RIM-66 Standard missiles. It is used for target tracking and Surface-to-air missile guidance as part of the Mk. 73 gun and missile director system, which is part of the Tartar Guided Missile Fire Control System.