This is how US ships defeat missiles without firing a shot

July 6, 2017

We Are The Mighty:

When the Arleigh Burke-class guided-missile destroyer USS Mason (DDG 87) came under attack multiple times in October 2016, the ship was able in at least one instance to use its defenses to shoot down the incoming Noor anti-ship missiles.
But there are times when a ship can’t shoot down the missiles – and thankfully, U.S. Navy vessels have plenty of options.
There are a number of reasons why a U.S. Navy ship may not be able to fire. In some cases, it may be due to restrictive rules of engagement. Other times, the inability to shoot may be due to battle damage. Perhaps there’s concern about what a miss might do.
In those cases, the Navy relies on decoying an inbound missile in one of several ways.

One option is via electronic countermeasures, or “ECM.” Specifically, the goal is to interfere with the guidance systems on the missiles by confusing or blocking the seekers on radar-guided ones.
The confusion angle is very simple. An ECM system like the AN/SLQ-32 would create false targets. This gets the missile to hopefully chase into empty ocean. Another method is to reduce the seeker’s effective range with jamming. This would allow the ship to get outside the seeker’s ability to acquire a target — again sending the missile off on a merry chase to nowhere…

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