#3784974 - 05/20/13 04:36 PM
Re: S-75M3 Volhov (SA-2E Guideline)
[Re: Cat]
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Joined: Aug 2012
Posts: 249
Mdore
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I agree 100%
Every system in SAM Sim has a camera or visual aiming system, except for the SA-5. ( I think so, but might be wrong )
It would be amazing to actually a camera or similar system on everything else.
A telescope for the ZSU-23-4 and SA-2F, and TV for the SA-2E, SA-3 and SA-4.
Though I think the SA-3 only has a TV on the updated Pechora-2A and Pechora-M. So maybe no TV here
Last edited by Mdore; 05/20/13 04:40 PM.
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#3811588 - 07/19/13 10:05 AM
Re: S-75M3 Volhov (SA-2E Guideline)
[Re: Cat]
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farokh
farokh
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farokh
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question to hpasp and other guys why GshV method in volhov do not simulated? we have much more jammer on other scenario ! maybe with this method we could attack them without any loos damage !
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#3811593 - 07/19/13 11:01 AM
Re: S-75M3 Volhov (SA-2E Guideline)
[Re: Cat]
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Joined: Aug 2012
Posts: 249
Mdore
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From the advanced manual What's exactly the GShV, and how it works? When the KRUG was fielded in large numbers in the WARPACT, the US started the use of the Angular Jamming Technique.This is mostly developed against the monopulse radars (SA-4/SA-5/SA- 6/SA-8/SA-10, ...) but it can also confuse older TWS radars (SA-2/SA-3). Thus the GSh instrument was developed, to counter these kind of jamming utilizing a special TWS technique. For the Volkhov, it was called GShV. For the Neva, it was called GShN. So far, this kind of jamming is not simulated in the SIM... and its technique is not discussed.
The jamming the GShV is designed to counter, isn't in SAM Simulator. Though the whole thing confuses me, isn't crosseye jamming used against monopulse radars? I don't see how crosseye jamming could confuse a TWS radar like the SA-2 uses. Anyway, shooting jamming targets is already WAY too easy, since only noise jamming and not modulated noise jamming is simulated. It's very easy to get a dozen kills without turning your radar on at all with the way SAM Simulator is now.
Last edited by Mdore; 07/19/13 11:04 AM.
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#3811607 - 07/19/13 12:19 PM
Re: S-75M3 Volhov (SA-2E Guideline)
[Re: Cat]
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Joined: Aug 2012
Posts: 249
Mdore
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I should warn you, I'm no expert. What I say could be wrong.
The only jamming simulated in SAM Simulator, is noise jamming.
The problem with noise jamming, is you can see which part of the sky the noise is coming from. On the radar display, it creates a thick band of noise. If you point at the centre of the band of noise, you're pointing directly at the jammer. The only thing noise jamming blocks is the ability to find a target's range.
After the first few years of the Vietnam War, the US introduced modulated noise jamming. Instead of transmitting noise of a constant power, they vary it slightly.
This modulation makes it difficult for radars like the SA-2 and SA-3 to detect exactly where in the sky the noise is coming from, and fills their radar display with multiple bands of jamming, instead of a single band.
Modulated noise jamming isn't simulated.
There are also lots of types of deception jamming, like inverse gain jamming, swept wave jamming, cross eye jamming, range gate pull off, velocity gate pull off, and many, many other types of deception jamming. None of them are simulated.
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Also, in my previous post when I mentioned crosseye jamming, that was just a guess and I very well could be wrong. I don't know which kind of jamming GShV counters, the advanced manual just says "angle jamming" and that it's against monopulse tracking. Crosseye jamming fits that description, but it could be some other form of jamming that GShV is designed to counter, and not crosseye.
Last edited by Mdore; 07/19/13 12:25 PM.
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#3811629 - 07/19/13 01:15 PM
Re: S-75M3 Volhov (SA-2E Guideline)
[Re: Mdore]
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Joined: Apr 2012
Posts: 916
farokh
farokh
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farokh
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There are also lots of types of deception jamming, like inverse gain jamming, swept wave jamming, cross eye jamming, range gate pull off, velocity gate pull off, and many, many other types of deception jamming. None of them are simulated.
if these jammers simulated on samsim ... we have to shoot sa-2 3 4 5 6 to trashcan !!!!! ps: tnQ to Mdore for these explain
Last edited by farokh; 07/19/13 01:22 PM.
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#3813231 - 07/23/13 07:26 AM
Re: S-75M3 Volhov (SA-2E Guideline)
[Re: Cat]
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Joined: Aug 2012
Posts: 249
Mdore
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I didn't find those numbers, I calculated them.
Count the radar scan lines on the SA-2 displays. You'll see there are about 2.5 or 5 per degree.
Maybe SAM Simulator doesn't draw the correct number of scan lines, so I checked some websites that mentioned the PRF and scan rate. From that I also calculated around 2.5 to 5 radar pulses per degree.
So that's two way I found the Fan Song transmits roughly 5 pulses per degree.
5 pulses per degree means one pulse is 0.2 degrees.
Basic trigonometry says 0.2 degrees at 40km is 140m. So there is 140m of uncertainty in elevation and azimuth for a target at 40km distance.
There are clever ways you could improve on that, but I don't know if it's possible with 1957 technology.
Last edited by Mdore; 07/23/13 07:27 AM.
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