Mosaic Magazine:
On July 13 and 14, over 200 rockets and mortars were fired at Israel from Gaza, one of which hit a playground and another a synagogue. One reason why more projectiles failed to hit their targets is the Iron Dome missile-defense system, which shoots incoming ordinance out of the sky. In 2006, after Hizballah launched thousands of rockets into Israel during the Second Lebanon War, the Israeli firm Rafael tasked an engineer named Chanoch Levin, whose own town was bombarded that year, with building a system to protect against them. Dan Raviv tells the story of Levin and his collaborators:
A couple, Boris and Polina (not their real names), both thirty-four, were at the center of Levin’s innermost team. Both had immigrated to Israel with their parents when they were teenagers—she from Soviet Moldova and he from St. Petersburg. In Israel, they grew up to become masters of algorithms. It was their role to come up with an entirely new way for the interceptor missile’s tiny computer to calculate when it was close enough to the attacking rocket to explode its warhead and destroy both projectiles.
This had to occur in mere microseconds, since two fast-flying objects meeting nearly head-to-head would have only the briefest of encounters. Polina was a brilliant computer programmer, but testing her algorithms required trial-and-error repetitions on test platforms that had never been used before. Boris’s job was to combine his wife’s mathematical solutions with a unitary, working system that could communicate with software written by dozens of people. He referred to his challenge as a Tower of Babel.
