Phalanx Versus The Palestinians

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Two years ago, some Israelis noted that the American and British were already using an effective anti-rocket system; C RAM. This is a modified version of the U.S. Navy Phalanx system, which was originally designed to protect warships from anti-ship missiles.

The first C-RAM was sent to Iraq in late 2006, to protect the Green Zone (the large area in Baghdad turned into an American base). It was found that C-RAM could knock down 70-80 percent of the rockets and mortar shells fired within range of its cannon. Not bad, since it only took about a year to develop C-RAM.

Israel has several small targets it wants to defend in southern Israel. The most frequent target is the town of Sderot. Since 2001, over 2,000 Kassam (homemade) Palestinian rockets have been fired at Sderot. Ten people have been killed, and over fifty injured. The Israeli army has developed a radar system that provides 10-15 seconds warning, which is enough time to duck into a shelter. But Sderot only has 80 bomb shelters, most of them built 20-30 years ago and in need of repair. If you want to reduce the casualties in Sderot (about one dead or wounded per 30-40 rockets fired), you need to reduce the number of rockets landing. One C RAM system can defend an area about four kilometers in diameter. This makes it possible to defend Sderot with one or two Phalanx guns, and one early warning radar.

http://www.strategypage.com/htmw/htada/articles/20080522.aspx