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Old 18th Aug 2007, 17:24
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Modern Elmo
 
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From the always reliable Wikipedia:

http://en.wikipedia.org/wiki/SAMPSON

“ …The SAMPSON uses two planar arrays to provide coverage over only part of the sky; complete coverage is provided by rotating the arrays, essentially similar to the way conventional radar systems operate. This is in contrast to the US AN/SPY-1 system, as used on the Ticonderoga class cruiser and Arleigh Burke class destroyer, which uses multiple arrays fixed in place to provide continuous coverage of the entire sky. Whilst this may seem to be a disadvantage, the SAMPSON radar rotates at 30 revolutions per minute, meaning no part of the sky lacks coverage for more than one second on average - the precise time varies as the beams can also be swept back and forth electronically. In addition, the use of a smaller number of arrays allows the system to be much lighter, allowing placement of the arrays at the top of a prominent mast rather than on the side of the superstructure as in the US ships. Placing any radar emitter at higher altitude extends the horizon distance, improving performance against low level targets; SAMPSON is at approximately double the height above the waterline than the arrays of its US equivalents. Although precise details of the SAMPSON's performance in this regard are unlikely to enter the public domain, such factors may mitigate or even eliminate the disadvantages of fewer arrays. …”

Umm-hmmm. . How far can an antiship missile travel in one second?



“…The 3M82 "Mosquito" missiles have the fastest flying speed among all antiship missiles in today's world. It reaches Mach 3 at a high altitude and its maximum low-altitude speed is M2.2, triple the speed of the American Harpoon. The missile takes only 2 minutes to cover its full range and manufacturers state that 1-2 missiles could incapacitate a destroyer while 1-5 missiles could sink a 20000 ton merchantman. An extended range missile, 9M80E is now available.

When slower missiles, like the French Exocet are used, the maximum theoretical response time for the defending ship is 150-120 seconds. This provides time to launch countermeasures and employ jamming before deploying "hard" defense tactics such as launching missiles and using quick-firing artillery. But the 3M82 "Mosquito" missiles are extremely fast and give the defending side a maximum theoretical response time of merely 25-30 seconds, rendering it extremely difficult employ jamming and countermeasures, let alone fire missiles and quick-firing artillery. …”

http://www.globalsecurity.org/military/world/russia/moskit.htm
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