The accuracy depends on what type of missile we're trying to intercept. It's said our accuracy is around 50% when targeting intercontinental ballistic missiles.
I was referring to using THAAD to knock down a short to intermediate ballistic missile. The ones SK launches more frequently.
The THAAD system is supposed to be highly accurate when used against the type and range of missiles it's designed to intercept.
“It’s just a very powerful, very accurate rocket,” says David Axe, editor of the blog
War Is Boring. “[It’s] tied to a very sophisticated radar.”
But there’s something about the way it works that makes it different from other air defense systems.
“It’s not an explosive warhead rocket,” Axe explains. “It’s just basically a solid warhead. They call it a kinetic warhead, or a kinetic munition. So rather than exploding it simply strikes its target.”
In a sense, it’s like a very expensive slingshot that’s trying to hit an arrow in flight. Obviously it has to be accurate — close is just not good enough.
THAAD has been operationally effective for about 10 years now, and the US has deployed it elsewhere in the world.
The THAAD system was in development for decades, since the days when President Ronald Reagan wanted to deter the Soviet Union. Investment accelerated when the first Gulf War in 1991 revealed the threat posed by weapons like Saddam Hussein’s Scud missiles. But success was slow in coming, and dozens of tests failed in the early years. Billions of dollars of investment have made it much more effective.
“It’s meant to defeat incoming short-, medium- and intermediate-range ballistic missiles,” Axe says. “It does not defend against world-spanning intercontinental ballistic missiles,” he adds. These are the kind of missiles that could hit the United States, but which North Korea has not yet mastered.