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AIR DEFENSE: Lasers Over Lebanon
August 8, 2006: Many Israelis are complaining that development of a, laser based anti-missile system, called THEL, which was recently cancelled, could have been used to stop some of the Hizbollah rockets coming out of Lebanon. Meanwhile, the American partner in THEL development is now offering a smaller version, Skyguard, for protecting commercial aircraft from portable anti-aircraft missiles. The manufacturer, Northrop Grumman, originally developed THEL (Tactical High Energy Laser) for combat situations. Tests last year showed THEL was able to knock down barrages of incoming mortar shells.Israel was a partner in the development of THEL, which was originally supposed to enter service in 2007. When THEL was cancelled earlier this year, the laser still needed work, but the THEL radar was already in good shape. In 2004, Israel used the THEL radar to detect incoming Palestinian rockets fired from Gaza, and this provided an opportunity to operate the radar under combat conditions.
The THEL system was designed to knock down larger, and better made, rockets than the home made Palestinian Kassam rockets. In other words, THEL would have been very useful knocking down the factory made rockets Hizbollah has been firing at Israel over the last few weeks.
The THEL laser and radar system can track up to sixty targets (mortar and artillery shells, rockets) at a time and fire on and destroy these projectiles at a range of up to five kilometers. THEL can destroy about a dozen targets a minute, at a cost of some $3,000 per shot. Each THEL system (radar and laser) could thus cover about ten kilometers of border. Most Hizbollah rockets were fired in groups of a dozen or more, so THEL, if it was in the right place, could zap about half of them. Of course, given how difficult THEL was to move, Hizbollah would endeavor to fire their rockets over some other stretch of border. The Israel-Lebanon border is 79 kilometers long.
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