Brief history, US source
Published journal article on ASBM's submunition effectiveness
Illustration on how it works
A second artillery DF21D workshop
Chinese in the illustration reads, ideal projectile and mobile projectile, it shows how the RV changes its track, object target reads, AC or AC Fleet
Our Sky-Wave OTH Radar, google it to know what these are.
This map tells you how much area can one OTH's cover.
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