Chinese ballistic missile defense system
The Dong Neng-3 (; DN-3/KO09) is a Chinese ballistic missile defense system. 
Design.
The system is generally believed to be based on the DF-21 with elements of the SC-19 also incorporated.
The interceptor is hit-to-kill. It can also be used as an anti-satellite weapon.
The Dong Neng-3 is believed to fill much the same role as the SM-3 however it is believed to be much larger.
History.
Testing of the DN-3 has primarily occurred at the Korla Missile Test Complex.
A 2010 midcourse defense test was most likely a test of the DF-3.
In 2015 the DN-3’s anti-satellite capabilities are believed to have been tested.
In February 2018 the DN-3 was tested against a DF-21 based target in space. This test was reported to be a success by the PLA Daily.
References.
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