Anti-air missiles and jamming effectiveness - Some unusual result

[giantsquid]

Dear devs,
I play CMANO and CMO since 2015 and I like very much the last patches, modelling anti air missiles and behaviour.

After some recent testing and battles I was wondering about the effectiveness of some modern defensive jammer on planes, that present unusual statistics.
I considered even some advanced systems like the Rafale’s SPECTRA or the F-15EX’s EPAWSS do not always look so effective against missiles. From open-source references and some stats in modern boardgames like Airpower, these systems are designed to provide a multi-layered defense (DRFM jamming, deception, with threat libraries constantly updated), which could translate into a higher probability of breaking missile locks, especially in BVR engagements.

Here I include some stats, just to do comparisons:
J-10 KG600 ECM pod late 90 vs R77 missile seeker early 2000 = 20%; chaff is 10% > it looks plausible
J-10 KG600 ECM pod late 90 vs meteor missile seeker early 2010 = 10%; chaff is 6% > it looks plausible
Su-30 MKI Gardenya ECM late 80 vs PL15 missile seeker Early 2010 = 5%; chaff is 5% > it looks plausible
Tejas EL8022 ECM late 90 vs vs PL15 missile seeker Early 2010 = 5%; chaff is 5%. It should be 10, like with same era KG-600 with Meteor?
Rafale F4 Spectra ECM late 2020 vs PL12 missile Early 2000 = 35%, chaff is 10% > it looks plausible, maybe a little low?
Rafale F3 Spectra ECM late 2010 vs PL15 missile seeker Early 2010 = 5%; chaff is 5% > possible error? A late 2010 system is less effective of a late 90 system. Should be around 30%?
Rafale F4 Spectra ECM late 2020 vs R24 missile late 70’s = 35%, chaff is 20% > possible error? No change in effectiveness between late 70’s and early 2000 seekers? Should be around 80-90%? Even chaff maybe too low at 20%
F15 EX ECM EPAWSS late 2010 vs PL12 missile Early 2000 = 25%, chaff is 10% > it looks plausible, maybe a little low?

I reported all the numbers because I have observed those anomalies. I didn’t remember anything like this in previous version of CMO.

I did tests in a modified version of a nice steam scenario, Battle of the Andaman Sea, 2021, China vs India: https://steamcommunity.com/sharedfiles/ ... xt=andaman

Here are the save files

Battle of Andaman Sea 2021_mod_14.zip

(781.66 KiB) Downloaded 5 times

.

Thanks!

Francesco

[Dimitris]

I think there is something that we failed to adequately communicate, and this is that chaff effectiveness now also depends on the target's apparent RCS instead of just the tech-generation comparison. See related post here: https://forums.matrixgames.com/viewtopi ... 7#p5235617

I suspect this would explain why you observe chaff being significantly more effective at protecting the Rafale (lower RCS) than the Su-30 (large RCS).

[giantsquid]

Thanks, the idea looks great, but I didn't notice chaff decoy % changes with RCS. See below from the save file.

Su-30 MKI Gardenya ECM late 80 vs PL15 missile seeker Early 2010 = 5%; chaff is 5% > it looks plausible
Rafale F3 Spectra ECM late 2010 vs PL15 missile seeker Early 2010 = 5%; chaff is 5% > possible error? A late 2010 system is effective as late 80 system... Spectra should be around 30%?

Francesco