BMD missiles sometimes descend prior to intercept.

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All Forums >> [New Releases from Matrix Games] >> Command: Modern Operations series >> Tech Support >> BMD missiles sometimes descend prior to intercept.

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BMD missiles sometimes descend prior to intercept. - 4/28/2019 8:28:33 PM

Zanthra

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Joined: 2/6/2019
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BMD intercepts are much improved in 1009.27.14 thank you! As you mentioned in the other thread, edge cases are expected :).

I made a modification to ARCNA442's BMD test scenario to include 4 ships firing missiles to vary how off axis the intercepts are. The biggest issue I see is that in some cases the RIM-161s descend to ground level before intercept even against the RVs at 300KM+. If things are aligned properly they don't have any trouble rolling for intercept and destroying the missile, but in some cases I think they are losing a lot of speed for a few ticks as they fall under 36000 feet and miss their intercept and overshoot.

The highest off axis of the interceptors can't find a valid intercept at all after launch and starts spinning around wildly. Perhaps some sort of sanity check on the intercept would make sense, and if it's no longer reasonable, redirect the missile to a new target or self destruct (or at the very least clear the weapon allocation so new salvos can be fired)?

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RE: BMD missiles sometimes descend prior to intercept. - 4/29/2019 12:23:24 PM

DWReese

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Joined: 3/21/2014
From: Miami, Florida
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redirect the missile to a new target or self destruct (or at the very least clear the weapon allocation so new salvos can be fired)?

That sounds exactly like a variation of the same thing that I reported as Part 2 in the previous thread.

BTW, I tried something similar, but instead of using 4-ships, I kept one ship but had attacking missiles coming from different locations. It's similar to what you are doing with the four-ship thing. My ship tries to "shoulder-up" to each of the threats before firing, but over-shoots are observed. I don't know how realistic multiple shooters arriving at the same time actually is, but it could happen.

Doug

< Message edited by DWReese -- 4/29/2019 12:24:09 PM >

(in reply to Zanthra)

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RE: BMD missiles sometimes descend prior to intercept. - 4/29/2019 2:28:46 PM

Zanthra

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Joined: 2/6/2019
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quote:

ORIGINAL: DWReese

redirect the missile to a new target or self destruct (or at the very least clear the weapon allocation so new salvos can be fired)?

That sounds exactly like a variation of the same thing that I reported as Part 2 in the previous thread.

...

I apologize if I had sounded dismissive of the problem in the other thread. The question you had asked me was rather specific to that scenario, in hindsight perhaps a better answer would have been "lets see what the fixes bring and worry about that in conditions where it's still a problem." In the "BMD issue" thread I had said this, which also happens to be a variation of Part 2.

quote:

The biggest gamebreaking issue I see regarding this problem is the fact that an SM-3 launched at long range, with no ability to track, takes up a weapon allocation that prevents any other units from allocating weapons to it. If it's out of radar range, it leads to that incoming missile being unopposed which is a problem for many scenarios including the Salvo scenario from Chains of War.

My preferred method for fixing the issues is not to launch the missiles in the first place if they can't intercept. If the launch can be avoided by tightening the range of the SM-3 or the DLZ, that's ideal. However, I feel there is a clear opportunity when the missile is calculating the course to target to determine if it can still reach the target and either drop the target or redirect.

< Message edited by Zanthra -- 4/29/2019 2:46:10 PM >

(in reply to DWReese)

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RE: BMD missiles sometimes descend prior to intercept. - 4/29/2019 4:46:35 PM

DWReese

Posts: 1824
Joined: 3/21/2014
From: Miami, Florida
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Zanthra,

FYI......In another BMD example, I eliminated the RIM 161, and used the RIM 174.

The range on the RIM 174 is listed at 130 miles. I found that when I allowed it to shoot at max range, it wouldn't hit anything because the highest altitude for that is 115000 feet, and the DF-21Ds were higher than that when the two came together. I then used the WRA to lower the shooting range to 100 miles. When I did that, the targeted missiles were now low enough for the RIM 174 to hit them and they worked perfectly.

Doug

< Message edited by DWReese -- 4/29/2019 4:58:43 PM >

(in reply to Zanthra)

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