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#3497359 - 01/18/12 11:57 AM Re: SAM Simulator [Re: vintorez]
piston79 Offline
Member

Registered: 09/02/11
Posts: 873
Originally Posted By: vintorez
Originally Posted By: Hpasp
Another bug-like: Neva tends to lose angle track of jamming target after a few seconds - I was unable to shoot anything around Hanoi, I lost every single missile after launch.

That is a feature!
neaner

Neva, and KRUG arms the radio-proxy fuse right after the launch.
The Chaff field will detonate these missiles, if you aim a B52.
With these two systems, the Weasels, and F4's around the airports can be dodged only.


Nonono! I lose a missile BECAUSE I lose the track. C'mon, I am not so absolute a rookie not to recognize chaff. smile


Might-be-bug:
- Why Neva missiles are immediately lost after auto-track in angle is lost, even for just a moment? (SDC only and tgt radial speed change, of course). Volkhov has no such feature and you can guide missiles without auto-track, if necessary.

This is the real Neva system behavior.
It is related to the fact, that search and tracking are handled by different antennas, and coordinate systems.


I think this is about the NEVA case....


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#3497436 - 01/18/12 01:20 PM Re: SAM Simulator [Re: Hpasp]
piston79 Offline
Member

Registered: 09/02/11
Posts: 873
This is from Ustka, the target is the ship!



And AAR:
Click to reveal..
7:41, V601PD 5V27D Missile launched on Channel-1
Target distance: 35km
Target azimuth: 349°
Target elevation: 0°
Target altitude: 95m
Missile guidance method: PS (Lead)

7:47, V601PD 5V27D Missile launched on Channel-2
Target distance: 35km
Target azimuth: 349°
Target elevation: 0°
Target altitude: 95m
Missile guidance method: PS (Lead)


08:49, V601PD 5V27D Missile launched on Channel-1
Target distance: 35km
Target azimuth: 349°
Target elevation: 0°
Target altitude: 95m
Missile guidance method: PS (Lead)


08:56, V601PD 5V27D Missile launched on Channel-2
Target distance: 35km
Target azimuth: 349°
Target elevation: 0°
Target altitude: 95m
Missile guidance method: PS (Lead)


Total, SNR On Air Time: 5min 35sec


nope Evil spirit in the SAM!...


Edited by piston79 (01/18/12 01:35 PM)

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#3497446 - 01/18/12 01:30 PM Re: SAM Simulator [Re: piston79]
Hpasp Offline
Member

Registered: 12/31/09
Posts: 1711
Loc: Hungary, Europe
This is from Ustka, the target is the ship!
Evil spirit in the SAM!...


Just a Polish Officer, who has a button that emits the K3 twice.
He will push it, when the missile is at 20km downrange.
cowboy
_________________________
Hpasp
Free SAM Simulator, "Realistic to the Switch"

http://sites.google.com/site/samsimulator1972/home

While Fighter Pilots made movies, SAM Officers made History.
(U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.)
thumbsup

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#3497452 - 01/18/12 01:37 PM Re: SAM Simulator [Re: Hpasp]
piston79 Offline
Member

Registered: 09/02/11
Posts: 873
Originally Posted By: Hpasp

Just a Polish Officer, who has a button that emits the K3 twice.
He will push it, when the missile is at 20km downrange.
cowboy


Check range!

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#3497471 - 01/18/12 02:00 PM Re: SAM Simulator [Re: piston79]
Hpasp Offline
Member

Registered: 12/31/09
Posts: 1711
Loc: Hungary, Europe
Check range!

?
_________________________
Hpasp
Free SAM Simulator, "Realistic to the Switch"

http://sites.google.com/site/samsimulator1972/home

While Fighter Pilots made movies, SAM Officers made History.
(U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.)
thumbsup

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#3497501 - 01/18/12 02:42 PM Re: SAM Simulator [Re: Hpasp]
piston79 Offline
Member

Registered: 09/02/11
Posts: 873
I am sorry, obliously I forgot how to deal with Neva... Thought that I could't fire if the "Razreshenie" is not lit... Sorry.... scuse_me

P.S. Did you consider to allow locks on ground clutter???


Edited by piston79 (01/18/12 02:48 PM)

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#3498026 - 01/19/12 07:15 AM Re: SAM Simulator [Re: piston79]
vintorez Offline
Member

Registered: 06/17/10
Posts: 108
1) ‘Podgotovka’ of Krug missiles – can they remain in ‘ready’ (spinned-up) mode endlessly, or we have something more to simulate?

2) Locking on ground clutter – Piston has made a good point. In most cases I switch SDC off after locking angle+range, because I’m not perfect at wind adjustment and lock is sometimes lost. With SDC off it NEVER loses track - perfect track is maintained all the way despite rolling through lot of clutter which look essentially the same as the target. For the sake of realism (fewer multiple kills, sigh), I think it should change.
Or, if real systems can do that, I wouldn’t say I’m not happy…


3) back to the problem of:

Originally Posted By: Hpasp

Might-be-bug:
- Why Neva missiles are immediately lost after auto-track in angle is lost, even for just a moment? (SDC only and tgt radial speed change, of course). Volkhov has no such feature and you can guide missiles without auto-track, if necessary.

This is the real Neva system behavior.
It is related to the fact, that search and tracking are handled by different antennas, and coordinate systems.



BUT, if in real life whole shooting sequence is possible with transmitter off (I mean visual tracking which is not simulated), or even manual trackers can hold the boresight in place in case the target starts jamming or so already after launch (AS/ASAP lost, continuing on RS) - there is not a sine qua non condition that radar lock must be there.
Boresight lines of target and missile tracking must be zeroed in anyway...
By the way, if different antenna sets deal with target and missile, there must be same problem as with Volkhov 'narrow beam' - or misalignments can be ignored because of distances shorter than in Volkhov shooting?

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#3498046 - 01/19/12 07:50 AM Re: SAM Simulator [Re: vintorez]
Hpasp Offline
Member

Registered: 12/31/09
Posts: 1711
Loc: Hungary, Europe
1) ‘Podgotovka’ of Krug missiles – can they remain in ‘ready’ (spinned-up) mode endlessly, or we have something more to simulate?

Only with Dvina/Volhov systems are the missile overheat simulated.
Neva/KRUG/Vega has such a long overheat time, that is not simulated.

2) Locking on ground clutter – Piston has made a good point. In most cases I switch SDC off after locking angle+range, because I’m not perfect at wind adjustment and lock is sometimes lost. With SDC off it NEVER loses track - perfect track is maintained all the way despite rolling through lot of clutter which look essentially the same as the target. For the sake of realism (fewer multiple kills, sigh), I think it should change. Or, if real systems can do that, I wouldn’t say I’m not happy…

Ground clutter is generally not caused the SNR to lock on it, just made spotting the target a bit more difficult.

Generally please learn using SDC. (Its not a big issue, compared to Radio-Proxy Fuse settings.)

With the Neva, the SDC has two modes...
... where the target speed should be below:
BS - 600m/s
MS - 200m/s
If the target speed is over 600m/s, do not use SDC!
Also SDC can only be used with 40Km mode. Do not use it with 80Km!!!
thumbsup

BUT, if in real life whole shooting sequence is possible with transmitter off (I mean visual tracking which is not simulated), or even manual trackers can hold the boresight in place in case the target starts jamming or so already after launch (AS/ASAP lost, continuing on RS) - there is not a sine qua non condition that radar lock must be there.
Boresight lines of target and missile tracking must be zeroed in anyway...
By the way, if different antenna sets deal with target and missile, there must be same problem as with Volkhov 'narrow beam' - or misalignments can be ignored because of distances shorter than in Volkhov shooting?


Volhov/Dvina can fire a missile, without target lock.
Neva can only fire, if the target is locked at least in angle.

Reason:

While doing target acquisition with the Neva, only the UV10 antenna is emitting and receiving.
It uses the Epsilon/Beta (up-down/left-right) coordinate system.


When you go to AS, the coordinate system is changed from Epsilon/Beta to Fi1/Fi2 (45 degree rotated) coordinate system.
The UV10 beam is locked, and the UV11 antenna pair does the scanning


If you loose target lock, while your missiles are flying, the UV11 scan will stop, and you loose your missiles.
cowboy


Edited by Hpasp (01/19/12 07:53 AM)
_________________________
Hpasp
Free SAM Simulator, "Realistic to the Switch"

http://sites.google.com/site/samsimulator1972/home

While Fighter Pilots made movies, SAM Officers made History.
(U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.)
thumbsup

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#3498206 - 01/19/12 10:39 AM Re: SAM Simulator [Re: Hpasp]
max2012 Offline
Member

Registered: 12/27/11
Posts: 423

That is, Neva can not intercept the SR-71 does!

Now I understand why, because Neva can only target up to 700 m / sec to intercept!

Therefore, the SR-71 is not possible!

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#3498210 - 01/19/12 10:42 AM Re: SAM Simulator [Re: Hpasp]
max2012 Offline
Member

Registered: 12/27/11
Posts: 423

KRUG is also likely not be able SR-71!

SR-71 may Volkhov and Vega!

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