I think we still need AD-1 and AD-2 to complement our terminal phase interceptor AAD and PDV to take care of high speed targets (5-7Km/sec icbm class re-entry vehicles) while PDV MK2 (or xsv-1) takes care of mid-course interception. These will be sleek and taller than AAD and PDV (as shown in an earlier DRDO presentaion) and will complete phase 2 of bmd.
Another off-shoot programme of AAD will be XR-SAM with range greater than 300 km which will be our desi S-400. It will take care of cruise missiles and aircrafts like J-20, J-31 and whatever pakis can throw at us.
Hey, I am here has entered into confusion mode.
Why we need two AD-1 AND AD-2?
Can't work be done by one AD series, like in 2000km series.
And also, Is PD mk-2 the PDV of 2000km series?
If I inspect the AD-1 & AD-2 sketches.....what I find is:Thats good news, we have more options now. Like we have different canister ejection systems.
AD-2
2 booster stages. 1 Kill vehicle
AD-1
1 booster stage. 2 (or 3?) Kill vehicles
If I have to guess, AD-2 is for mid-course interception before the warheads have separated.
AD-2 is for high altitude terminal-phase interception that's capable of taking on MIRVs