Slitherine

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2) Not sure where your comment about 40 year old tech comes from. The MKK was developed in 1997 and deployed a couple years later, I think 2001 or 2002

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30/07/2018 15:01:46 - [China Satellites] Contact: Multirole #1032 has been classified as: F-35C Lightning II - Determined as: Hostile (Classification by: Naha Flanker #6 (Su-30MKK Flanker G) [Sensor: OEPS-31E-MK [IRST]] at 64.5 nm)

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ORIGINAL: Stealth2017

I am curious what is the log record before this one?
30/07/2018 15:01:46 - [China Satellites] Contact: Multirole #1031 has been classified as: F-35C Lightning II - Determined as: Hostile (Classification by: Naha Flanker #6 (Su-30MKK Flanker G) [Sensor: OEPS-31E-MK [IRST]] at 64.5 nm)


which equipment detected Multirole #1032 ?
Su-30MKK Flanker G

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30/07/2018 15:01:46 - [China Satellites] Contact: Multirole #1031 has been classified as: F-35C Lightning II - Determined as: Hostile (Classification by: Naha Flanker #6 (Su-30MKK Flanker G) [Sensor: OEPS-31E-MK [IRST]] at 64.5 nm)

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2:24:57 - 2:24:57 - Contact: BOGEY #4 has been classified as: J-20 Mighty Dragon - Determined as: Hostile (Classification by: F-35C Lightning II [Sensor: EOTS [IRST]] at 10.5 nm)
2:24:53 - 2:24:53 - New contact! Designated BOGEY #4 - Detected by F-35C Lightning II [Sensors: AN/AAQ-37 EO-DAS] at 296deg - 11.6nm

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2:14:43 - 2:14:43 - Contact: Fighter #4 has been classified as: J-20 Mighty Dragon - Determined as: Hostile (Classification by: F-35C Lightning II [Sensor: EOTS [IRST]] at 20.5 nm)
2:14:41 - 2:14:41 - Contact: BOGEY #4 has been type-classified as: Fighter (Classification by: F-35C Lightning II (F-35C Lightning II) [Sensor: AN/AAQ-37 EO-DAS] at 21.4 nm)
2:14:33 - 2:14:33 - New contact! Designated BOGEY #4 - Detected by F-35C Lightning II [Sensors: EOTS [IRST]] at 297deg - 24.9nm

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2:02:03 - 2:02:03 - Contact: BOGEY #5 has been classified as: J-20 Mighty Dragon - Determined as: Hostile (Classification by: F-35C Lightning II [Sensor: EOTS [IRST]] at 55.5 nm)
2:01:59 - 2:01:59 - New contact! Designated BOGEY #5 - Detected by F-35C Lightning II [Sensors: AN/AAQ-37 EO-DAS] at 297deg - 56nm

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2:40:56 - 2:40:56 - Contact: Multirole #8 has been classified as: F-22A Raptor - Determined as: Hostile (Classification by: J-11BS Flanker B [Su-27SK Copy] [Sensor: Generic IRST] at 50.9 nm)
2:38:56 - 2:38:56 - Contact: BOGEY #8 has been type-classified as: Multirole (Classification by: J-11BS Flanker B [Su-27SK Copy] (J-11BS Flanker B [Su-27SK Copy]) [Sensor: Generic IRST] at Estimated 83 nm)
2:38:40 - 2:38:40 - New contact! Designated BOGEY #8 - Detected by Radar (Spoon Rest C [P-12]) [Sensors: Spoon Rest C [P-12]] at 215deg - Estimated 22nm

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3:36:10 - 3:36:10 - Contact: Multirole #5 has been classified as: F-22A Raptor - Determined as: Neutral (Classification by: Cessna 152 [Sensor: Mk1 Eyeball] at 3.5 nm)
3:35:59 - 3:35:59 - Contact: BOGEY #5 has been type-classified as: Multirole (Classification by: Cessna 152 (Cessna 152) [Sensor: Mk1 Eyeball] at 5.2 nm)
3:35:51 - 3:35:51 - New contact! Designated BOGEY #5 - Detected by Cessna 152 [Sensors: Mk1 Eyeball] at 212deg - 6.1nm - Small Contrail Detected.

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ORIGINAL: amizaur

Hello everyone. Just boght the game and registered.

I can take that it is technically possible to detect a supersonic-moving stealth plane from 64nm with Su-30 IRST. Maybe it's really so good. Maybe the plane was detected by something else and the info passed to Su-30.

But how can the IRST identify and classify it as an F-35 ? IRST (the type that is mounted in Su-27 family planes, and all other old-fashioned 70s and 80s IRST systems) are non-imaging sensors. It's only search & track system. It's good at detecting (just opposite to FLIR) because it actively scans area, it can't identify anything.
It just detects "blips" of heat on the sky and that's all. It knows only that something is there. I can believe in detection capability, but identification - by IRST - from 60nm ? If Su-30 have some high-magnification IR or daylight camera which can be cued by IRST to identify it, then OK (from shorter range) - but the identification should not come from IRST itself.

And even in case of imaging devices (like FLIR, or a modern FLIR based IRST which can do both things), max identification range should always be shorter than max detection range. First you can see some blip or a few pixels and can make detection, but only from much closer range you can see enough pixels to recognise what kind of target it is.
Even for modern IRST/FLIR systems, claimed max identification range is usually about 60% of max detection range. Would be good to implement such rule-of-thumb into the game engine - identification of contacts possible only at less than 60% of possible detection range. Not sure if something like that is used now, the above logs of instant detection/identification events would suggest that it isn't.

Some examples of modern IRST systems:

PIRATE system from Typhoon is cited with typical range of 90km rear and 50km head-on against fighter targets. It has probably both scanning and imaging sensors, or a single imaging sensor with dual field of view to act for both detection and identification purposes:

"The PIRATE is installed on the left side of the Eurofighter Typhoon the front of the cabin. The PIRATE is integrated with the AIS (Attack and Identification System) for the Eurofighter. The system is water cooled with a weight of 60 kg and volume of 45 liters, with consumption
550 W. The use of high performance optical systems atermalizados, a detector Iiagem infrared (IIR) second-generation highly sensitive in the band that sweeps from 3 to 11 mM in two bands (3-5 mM and 8-10 mm), and an algorithm advanced with more than 190,000 lines of Ada code allows the hacker to detect the hot parts of the engine exhaust and surfaces heated by friction with air. When the sensor superresfriar even small temperature changes can be detected at long range. Although no upper limit was set, the distance of 150 km is accepted, and the typical is 50 to 80 km. PIRATE detected in the tests and Tornado aircraft Mig-29 to more than 100km. The data output can be directed to any of the MFD cockpit or HUD. Other images can be generated in the HMD, can act as FLIR and IRST. The use of processing techniques to enhance data output, improving image resolution of targets. The manufacturer claims the system is capable of displaying high-resolution images for visual identification (VID) of target-to-air and air-surface, being very useful at night."

Rafale has an IRST with advertised 100km range (that would be 60nm) AND it also has a separate system (in a second bulge on it's nose) for identification of targets (high magnification camera with laser rangefinder) with up to 40km range (I guess that's ident range).

OLS-35 system from Su-35 is said to have 90km/50km range (rear/front) - just like PIRATE, and also have a separate camera for identification purposes.

But the basic OEPS-27 IRST from Su-27 has no camera and can't identify targets. Only detect and track them. (and within ~6km it can measure range with laser rangefinder).

OLS-30 (52Sh) from Su-30MKK - "Infra-red search and track weighing 200 kg includes laser and IR sensors. In comparison to its predecessor OLS-27 (Izdeliye 36Sh) on Su-27, the IR detection range nearly doubled to > 90 km from the original 50 km. The range of laser range finder is increased to > 10 km from the original 6 km."
Still no camera, just pure IRST.

OEPS-30-I (31E-MK) - I guess this is the Su-30MKK in CMANO database - Su-30MKK (later models?) and Su-27SK - a bit better version of OLS-30 but still I can't find any info suggesting that it integrates a camera (like OLS-35).

I guess Su-27 and 30 IRSTs in database are mistakenly set as an imaging sensors ? From the logs above I see that even a Chinese copy of basic Flanker (J-11BS Flanker B [Su-27SK Copy) have this IRST with magic identyfing capabilities, only with a bit shorter range.... Well, PIRATE or OLS-35 systems should be, juts like new IRST pods which use high-resolution imaging sensors. But old OEPS-27 and it's modernised versions up to OEPS-30 should not be treated as imaging infrared sensors nor have identification capabilities, they are pure search & track systems. They generate just a bearing to target info (inside 5-10nm also range to target from it's laser rangefinder). Same for all older generation american IRST systems (like from F-4 / F-14 ect.). Just scanning IR element, that can find hot points in the sky but doesn't identify them as it doesn't produce any image of the target.

Regards!

(Sorry for possible typos or errors)