India's Anti-Satellite (ASAT) Weapons

[Arihant Roy]

Mach 18 is around 6.5 Km/sec? .............

Nope. It's 5 km/sec.

With the new KV, PDV and PDV MK 2 can take out Godfather of Shaheen 2 and 3.

Ding a Dong 24 and 31 can also be brought down.

 

[sayareakd]

Best part was Kill vehicles IR seeker search range is 200 kms.

NOTAM was 2000kms, that means LRTR could look up to 2k kms range

 

[porky_kicker]

Next mission...........

 

[Enquirer]

Best part was Kill vehicles IR seeker search range is 200 kms.

NOTAM was 2000kms, that means LRTR could look up to 2k kms range

VK Saraswat said that the seeker has a range of 50-100kms.
The 'range' of the kill vehicle is however 200kms.
The KKV could get cues from ground radar before the seeker locks on to the target.

 

[Enquirer]

Have already watched this video earlier.
Am crazy about BMD. Have watched almost all if not all the videos out there


Watch this video on Thaad er. People will understand the real significance of the PDV MKII after watching this marketing video.
Due to its sheer range, PDV MKII can provide ballistic missile defense cover to an area which is atleast three times the area covered by the regular PDV.

In a sense PDV Mk2 is to PDV(albeit with a brand new KKV having an accuracy less than a millisecond and a new higher r IIR seeker) as Thaad er is to Thaad.

Why a kill vehicle with better than a millisecond reaction is required? Because when intercepting a sat in LEO, closing speeds are greater than 10km/sec. So in a millisecond, both the kill vehicle and the sat would have covered 10 metres relative to each other. The satellite itself would have travelled 7.8 metres in a millisecond . So if the kinetic kill vehicle has a reaction time greater than a milli second, say 2-3 milliseconds, the miss distance would be 2 * 10 metres =20m and there wouldn't be a direct collision.

The kill vehicle hit the middle of the Microsat R with an accuracy of less than 10 cms.

Bleeding edge.

Good attempt to explain the need for sensitivity in KKV, but u miscalcuated the 'miss distance'.
Forward 'closing' velocity and the lateral velocity are not the same
If IIR seeker is of higher resolution, that would facilitate a more accurate trajectory then a lower 'reaction' time (via the divert thursters) may suffice - because the KKV would put itself in the precise trajectory of the target, that may not require too many last millisecond corrections.

 

[sayareakd]

VK Saraswat said that the seeker has a range of 50-100kms.
The 'range' of the kill vehicle is however 200kms.
The KKV could get cues from ground radar before the seeker locks on to the target.

More than 200 kms in range, also LRTR pointed in yellow arrow.

Thats some great stuff. This mini IR seeker is major building block of MKV.

 

[Enquirer]

View attachment 33864

More than 200 kms in range, also LRTR pointed in yellow arrow.

Thats some great stuff. This mini IR seeker is major building block of MKV.

That range that you pointed will be traversed by both the target and the KKV.....while KKV is moving at slower speed than the target.

 

[Enquirer]

View attachment 33864

More than 200 kms in range, also LRTR pointed in yellow arrow.

Thats some great stuff. This mini IR seeker is major building block of MKV.

That range that you pointed will be traversed by both the target and the KKV.....while KKV is moving at slower speed than the target.

Upon closer inspection, you maybe right. The seeker's range is in the range of 180-200 kms..........if the video is depicting everything to scale AND if both horizontal & vertical scale are the same!

 

[Arihant Roy]

Best part was Kill vehicles IR seeker search range is 200 kms.

NOTAM was 2000kms, that means LRTR could look up to 2k kms range

There's another best part. The KV itself can travel for over 200 kms. That's the advantage of this not so compact kill vehicle. It's a large heavy duty robust vehicle meant for the big boys.

 

[Arihant Roy]

A great news for my fellow bhagwas.
I had overlooked it the first time.

There's a LRTR deployed somewhere in the Andaman & Nicobar Islands. As can be seen from the above screenshot. This takes the total no of LRTR used to three.

This also implies that most of the elements of the floating missile test range that was envisaged in 2014 are in place. VC-11184 which is now in trials will complete this range once inducted in the Navy.

We have a robust ballistic missile detection and tracking network in place.
Dr Reddy had emphasized that Mission Shakti could be done quickly because the BMD infrastructure was in place.

BMD program is not just a tech demonstrator. It's first phase has already been deployed or it is going to be deployed and made operational soon. But unlike platforms and missiles of a tactical nature, there will be no formal announcements or press releases this time.

 

[Arihant Roy]

Good attempt to explain the need for sensitivity in KKV, but u miscalcuated the 'miss distance'.
Forward 'closing' velocity and the lateral velocity are not the same
If IIR seeker is of higher resolution, that would facilitate a more accurate trajectory then a lower 'reaction' time (via the divert thursters) may suffice - because the KKV would put itself in the precise trajectory of the target, that may not require too many last millisecond corrections.

I didn't miscalculate anything. I had never said lateral velocity is equal to closing velocity.

The miss distance figure of 10 metres that I had quoted isn't lateral motion.

Having said that, yes if one uses a higher resolution FPA, then the kinetic kill vehicle will be able to make precise corrections to its path from a good distance away and hence a divert altitude control system with a less than millisecond accuracy won't be needed.
BUT this is possible only for satellites that follow a fixed predictable trajectory.

Let us consider a maneuvering RV. Which alters it's trajectory every now and then while traveling towards the same general direction. Then no matter how high your IIR seeker resolution is, the KKV will have to adjust its course accordingly until the point of impact. Because the RV itself isn't following a ballistic predictable trajectory but it's changing course to complicate ballistic missile defenses. The last stage of any ballistic missile which has the RV also has a post boost control system PBCS most of the time. It is through this, that the last stage can make course corrections even before the RV is deployed.

Hence to intercept a maneuvering RV with a high degree of Pk or an ICBM in its mid course, you need a kv with a Divert attitude control system having less than a millisecond accuracy.
This same setup can also be used to intercept a Post boost glide vehicle (PBG) ie HGV like the Chinese DF-ZF before it comes even close to its destination


If you look at the DRDO clip on Mission Shakti and pay attention to the details, you will find that the Kinetic kill vehicle has altered its course/made some final adjustments atleast 6-7 times in the very last second of its flight. You can see the target lock ON rectangular blue box on the satellite shifting a no of times in the last sec of the KKV flight. That is even in the final moments, the KKV is fine tuning its approach to guarantee a direct hit.
That portion of the video showing the final moments before the hit has been slowed down for the viewers so that we can keep a track of things.


Having said that, we have used a Constant Bearing Decreasing Range (CBDR) approach in this Mission. In this, the KKV moves in a such a manner that the IIR seeker always has the target satellite / RE entry vehicle in its field of view. This is made possible by constant corrections by the Divert and altitude control thrusters. Initially, he KKV is moving in a particular direction but the onboard IR seeker is looking at a slightly offset direction so that it has the target in its sight from very early on. In this way, the seeker can make adjustments and fine tune its approach from a great distance away and ensure a direct hit.

An advantage of the Constant bearing decreasing range approach is that you won't be requiring a seeker with a very large field of view since the KKV is itself positioned to ensure that the target is always in the IIR seeker cross hairs.
This approach has also been used in Operation Burnt Frost.

 

[Arihant Roy]

VK Saraswat said that the seeker has a range of 50-100kms.
The 'range' of the kill vehicle is however 200kms.
The KKV could get cues from ground radar before the seeker locks on to the target.

Dr G S Reddy had said the IIR seeker used had a range of 200 kms. And the Kill vehicle also has a 200+km range.

The seeker's sheer range can be gauged from this picture.
Look at the point from where the IR lock on takes place and the then position of Microsat R.

 

[Arihant Roy]

VK Saraswat said that the seeker has a range of 50-100kms.
The 'range' of the kill vehicle is however 200kms.
The KKV could get cues from ground radar before the seeker locks on to the target.

TGC start in this pic implies Terminal Guidance control taking over from Mission Ground Control.

 

[Enquirer]

I didn't miscalculate anything. I had never said lateral velocity is equal to closing velocity.

The miss distance figure of 10 metres that I had quoted isn't lateral motion.

Having said that, yes if one uses a higher resolution FPA, then the kinetic kill vehicle will be able to make precise corrections to its path from a good distance away and hence a divert altitude control system with a less than millisecond accuracy won't be needed.
BUT this is possible only for satellites that follow a fixed predictable trajectory.

Let us consider a maneuvering RV. Which alters it's trajectory every now and then while traveling towards the same general direction. Then no matter how high your IIR seeker resolution is, the KKV will have to adjust its course accordingly until the point of impact. Because the RV itself isn't following a ballistic predictable trajectory but it's changing course to complicate ballistic missile defenses. The last stage of any ballistic missile which has the RV also has a post boost control system PBCS most of the time. It is through this, that the last stage can make course corrections even before the RV is deployed.

Hence to intercept a maneuvering RV with a high degree of Pk or an ICBM in its mid course, you need a kv with a Divert attitude control system having less than a millisecond accuracy.
This same setup can also be used to intercept a Post boost glide vehicle (PBG) ie HGV like the Chinese DF-ZF before it comes even close to its destination


If you look at the DRDO clip on Mission Shakti and pay attention to the details, you will find that the Kinetic kill vehicle has altered its course/made some final adjustments atleast 6-7 times in the very last second of its flight. You can see the target lock ON rectangular blue box on the satellite shifting a no of times in the last sec of the KKV flight. That is even in the final moments, the KKV is fine tuning its approach to guarantee a direct hit.
That portion of the video showing the final moments before the hit has been slowed down for the viewers so that we can keep a track of things.


Having said that, we have used a Constant Bearing Decreasing Range (CBDR) approach in this Mission. In this, the KKV moves in a such a manner that the IIR seeker always has the target satellite / RE entry vehicle in its field of view. This is made possible by constant corrections by the Divert and altitude control thrusters. Initially, he KKV is moving in a particular direction but the onboard IR seeker is looking at a slightly offset direction so that it has the target in its sight from very early on. In this way, the seeker can make adjustments and fine tune its approach from a great distance away and ensure a direct hit.

An advantage of the Constant bearing decreasing range approach is that you won't be requiring a seeker with a very large field of view since the KKV is itself positioned to ensure that the target is always in the IIR seeker cross hairs.
This approach has also been used in Operation Burnt Frost.

No time to argue over simple math/physics.
If you're satisfied with you math, I am going to skip the rest of your post.

 

[Enquirer]

View attachment 33866

Dr G S Reddy had said the IIR seeker used had a range of 200 kms. And the Kill vehicle also has a 200+km range.

The seeker's sheer range can be gauged from this picture.
Look at the point from where the IR lock on takes place and the then position of Microsat R.

I already concurred (earlier post) that the seeker range was probably more than what VK Saraswat had told us.

 

[Aaj ka hero]

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?

 

[Arihant Roy]

That range that you pointed will be traversed by both the target and the KKV.....while KKV is moving at slower speed than the target.

According to Dr G Satheesh, the second stage solid booster cut off over 100 kms. But the actual intercept took place at 280 kms.. So the kinetic kill vehicle reached this altitude all by itself, covered a verticke distance of more than 150 kms . At the same time its moving forward.

So, the KKV itself has a range greater than 200 kms. 200 km is not the distance covered by both the satellite and the kill vehicle.

According to the above pic, second stage booster had cut off at 110 kms. So KKV covered a vertical distance of 170 km+ itself while having a forward component of its velocity ie, traveling horizontally in the direction of the incoming satellite.

Now do the math, and you will see 200 km is a conservative figure. The KKV has a slant range much higher than this.
Another hint - Dr Reddy has said in the press conference that the PDV Mk2 can also be used to shoot down satellites at an alt of well over 1000 kms

 

[Aaj ka hero]

another one wanted downward collusion but we did head on collusion. he is not satisfied with his data.


had to post my own. Lets see what doctor uncle come with new ones.

Sir, very good work.
You are a LEGEND, and rolemodel for me.
Hope, had I knew the sufficient knowledge I would had joined you too against them.
I have a question, guys and ladies here are saying we have now all technologies for creation of our own SAM's in the line of s-400.
Then why are we not installing them instead of s-400.
And also this development means we can do our own aegis, then why our navy and government never made comment on this direction?
Is more work need to be done?

 

[Enquirer]

According to Dr G Satheesh, the second stage solid booster cut off over 100 kms. But the actual intercept took place at 280 kms.. So the kinetic kill vehicle reached this altitude all by itself, covered a verticke distance of more than 150 kms . At the same time its moving forward.

So, the KKV itself has a range greater than 200 kms. 200 km is not the distance covered by both the satellite and the kill vehicle.

View attachment 33868

According to the above pic, second stage booster had cut off at 110 kms. So KKV covered a vertical distance of 170 km+ itself while having a forward component of its velocity ie, traveling horizontally in the direction of the incoming satellite.

Now do the math, and you will see 200 km is a conservative figure. The KKV has a slant range much higher than this.
Another hint - Dr Reddy has said in the press conference that the PDV Mk2 can also be used to shoot down satellites at an alt of well over 1000 kms

The KKV is a 1.8 tonne vehicle
It probably carried a lot of fuel within.
That said, at the second stage separation the KKV would have had sufficient upward velocity to help it climb much of the remaining distance by sheer momentum.
(the separation process itself would give it an upward boost)

 

[sayareakd]

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?

Thats good news, we have more options now. Like we have different canister ejection systems.