What Is Aegis Ashore?
Aegis Ashore is a land-based missile defense system. Like ships equipped with Aegis, it is capable of intercepting ballistic missiles.
It was developed by the United States, and uses an advanced radar system and SM3 interceptor missiles.
Japan was planning to use Aegis Ashore as part of a three-layer missile defense, alongside Aegis destroyers and the land-based PAC3 interceptor system.