Eugene Chia
https://www.quora.com/profile/Eugene-Chia-28

So far, attempts to kill ICBMs in boost phase utilize things like airborne or space-borne lasers, not missiles.
截止目前位置，我们用于阻止战略导弹上升相位的可利用材料是机载或太空激光，并不是导弹。

This crazy looking beast, the Boeing YAL-1A, was one attempt.
这个看起来很疯狂的机器-波音YAL-1A,就是一向尝试。

The problem with interception at boost phase is that’s a very short window, and if the launcher is in hostile territory (which it likely is) it makes it very challenging to perform the intercept.
在上升阶段拦截的问题是，这是一个很短的窗口，如果发射器处于地方领地（很多情况都是这样），那施行拦截就更具有挑战性了。

For example, using that airborne laser you’d need that 747 to be flying somewhere around the launcher… which is unlikely to work out too well.
举个例子，使用机载激光的话，你需要747飞到发射器附近...这听起来不可能做到。

Missiles would likely be too slow to hit a target during boost phase, and you’d have the same issue- the launcher would likely have to be in hostile airspace.
导弹可能更难以在上升阶段击中目标，并且你也有一样的问题：发射器可能位于地方领域。

Keep in mind, just detecting a launch in time to attempt a boost phase intercept is already a big problem, let alone any other challenges in performing an intercept in time.
记住，单就及时探测发射器的位置，并试图在导弹上升阶段拦截成功，就已经是个大难题了，更不用说及时执行拦截的任何其他挑战了。

About the only place where this may make sense if shooting down submarine launched ballistic missiles, but those have their own challenges- namely, most modern boomers are really hard to locate.
唯一可行的地方是击落潜射弹道导弹，但是这也极其富有挑战性，特别是对于现代婴儿潮一代出生的人来说。

There’s some research being done using drones that can loiter for long periods, to try to counter a limited arsenal such as that possessed by North Korea. Those are also restricted to a relatively small area, so such an approach is a bit more feasible.
有研究表明，比如可以使用无人机，长时间走走停停，去对抗一个北韩的武器库。这些也仅限于相对较小的区域，因此这种方法更可行。