Beamscanner

EW radars may be too low of a frequency to target with the HARM...

on the RWR doppler topic, What he's referring to is if the RWR can detect High PRF emissions used by pulse Doppler radars. Chances are it couldn't simply based on the equipment available of that era. Most 1st generation RWRs could not detect HPRF emissions with their simple crystal video receivers, and they needed special equipment to detect CW signals. This is also true for 1st generation RWRs from the U.S., such as those used in Vietnam. But keep in mind that Close in ACM modes (even on modern radars) dont use HPRF. They rapidly switch to medium or low PRF for all aspect detection at close range in STT (unless guiding a semi-active missile). So the Mig-19's RWR should detect LPRF signals (Ground mapping or ACM modes in modern radars, plus old school analog radars using LPRF) and maybe MPRF signals (modern radars using a MPRF waveform) from rear aspect only. A crystal video receiver would also explain the poor sensitivity it presumably has ("only detecting STT emissions"). If RAZBAM decides to go with the following logic: [is emitter in rear hemisphere? -> if yes, is it locked on to my aircraft. -> if yes, display indication] Then they would have a somewhat accurate solution to its simulation. However, with the logic above, a 4th gen aircraft could lock onto an escaping MIG-19 from afar with HPRF selected which would give the MIG an RWR indication. IRL, the RWR probably won't actually detect the lock on at all if the enemy was using a HPRF waveform. I think as long as they make the RWR sensitivity coefficient low enough to the point that it wouldn't detect an emitter beyond 15 miles or so (where a modern radar in STT would automatically switch out of HPRF and go to MPRF or LPRF) then it'll work great.

"TWS Scan Raid", "One Look Raid" and "EXP" are not the same thing. The F/A-18C has all three. RAID is something else... RAID enhances the doppler processing with in a narrow set of range gates (10 nm display), and performs doppler beam sharpening to resolve closely spaced aircraft which may have looked like a single radar hit in normal search. In TWS Scan Raid, the antenna ±10° in azimuth centered on the L&S designation. One Look Raid is also known as Situational Awareness mode (SAM) and STT Raid. From what I've read, It operates similarly to TWS Scan Raid. EXP does exist under certain circumstances (TWS for sure, but also maybe LTWS with a L&S target). But EXP literally just zooms the display on the L&S designation. It does not change the waveform or signal processing AFAIK

1. no 2. IRL, yes. It involves the depression of the TDC when not over a brick or track file, but i dont recall how long. In DCS, not yet.

I made the link to start at the time stamp.. But if its not working, time is at 32 minutes

Footage of the AN/APG-70 in air to ground mode (probably real beam ground mapping) and also its SAR mode.

^ also can you confirm the type of audio the ALR-45/50 provided? 1. Raw PRF audio (Amplitude modulation using the emitters PRF) 2. Synthetic audio (fake audio generated by the RWR, usually only a few different tones) 3. A combination of Raw and synthetic audio (Low PRF/MPRF raw audio, HPRF/CW Synthetic audio)

IDK what TAMMAC is. The F/A-18C has an SA page which will display Link-16, radar tracks (not bricks), RWR data, waypoints, pre-planed points, SAM rings, etc

Just imagine how easy it'd be to counter the HARM if it blew up every time you went EMCON for X period of time. It'd be easy to figure out how long "X" is, and tell your operators to turn off for that amount of time.

I've found what you think was happening. There is only one mode out of five where this can happen. "Pre-briefed" is the only mode that may allow it to self-destruct. HARM as Sensor, Equations of Motion, Range Unknown and Self-protect modes do not allow the HARM to self-destruct. In normal operation the HARM is designed to continue in the direction it last saw the emitter. "continued homing capability even after the target emitter has been closed down (thanks to the incorporation of a memory in the guidance system)" (this is in reference to AGM-88 A/B/C) Only source I could find that mentions self-destruct: https://www.vaq136.com/ea6bharm/ HARM is an evolution of the shrike, the point of that statement is that there is public information on U.S. designed ARMs and how they work. Good luck trying to find documentaries as detailed as those on HARM. So whose logic is flawed? The HARM is by default designed to continue its course or look for a new target if an emitter drops. Hence the INS and later GPS. Conflating one specific instance, with all instances, is flawed.

Haha! Why would anyone think the HARM self-destructs if the emitter turns off!? Target radars blink on and off all the time just in case a HARM is guiding on them. (to disrupt the guidance) This logic is flawed. Please go watch a documentary on the Wild Weasels or the SA-2 operators of Vietnam. If HARMs self-destructed when the signal was lost no HARM would have EVER scored a hit.

LTWS gives the "TUC" or target under cursor functionality. However, ED is also missing L&S and DT2 designations. These are "soft lock" designations, similar to the 4 designations the DCS F-15 can do in TWS. The difference is the F/A-18C only has 2 designations, not 4. But the F/A-18C can soft lock in both RWS and TWS, where as the DCS F-15 can only do so in TWS. The L&S (launch and steer) track is the primary track. If a weapon is slaved to a radar track, it will only slave to the L&S. Thus you can only engage the L&S track. The DT2 and TUC are purely for SA and the DT2 designation can quickly be switched to the L&S designation by hitting the un-designate button (cycles L&S and DT2 designations). The three of these (L&S, DT2, TUC) are essentially TWS tracks in RWS mode. Because the antenna scan is very long in RWS, radar tracks (radar bricks are not the same as radar tracks) do not get updated very often. Thus this limited TWS functionality in RWS mode has a low refresh/update rate. Hence the term Latent Track While Scan (LTWS). While launch symbology is shown for LTWS tracks, the tracks themselves are not weapons quality. Thus, firing a weapon on an LTWS track will switch the radar to TWS (or STT for the AIM-7), convert the LTWS tracks to a L&S track, and launch the weapon.

Correct. They implemented it backwards. The US does not speak from ownship to B/E.. The US speaks from the B/E to the aircraft. http://www.alsa.mil/mttps/brevity/ ED should know this. Their own AWACS gives bearings FROM B/E to the aircraft/bandit.

They made a mistake. The correct indications should be: -------------- Ownship BULLSEYE (bottom middle of display): (Bearing FROM selected waypoint TO ownship) / (Range FROM selected waypoint TO ownship) -------------- Cursor BULLSEYE (Top left of display): (Bearing FROM selected waypoint TO cursor position) / (Range FROM selected waypoint TO cursor position) -------------- The BRA format (Left bottom inside tactical area): (Bearing TO cursor FROM ownship) / (Range TO cursor FROM ownship)

There it is. Cool! Dont understand why it does that.. but it clearly does. Just a weird Swedish thing i guess?

Simply answer is yes. Long answer is that it depends on various factors of the radar and even the aspect, shape and size of the vehicle. The PS-37 is non-coherent analog radar that uses a low PRF. Thus it surely did not perform any Doppler beam sharpening to increase its resolution. https://www.aef.se/Avionik/Notiser/PS-37/PS-37A.htm So any detection of vehicles would be based on magnitude (how reflective the car is) and contrast (how reflective the objects surrounding the car are). In a radar such as the PS-37, the antenna's beamwidth and the radars pulse duration effect the angular and range resolution (meaning the sharpness/resolution of the radar image itself)

does the video bar line really look like a rectangle in the real Viggen? I could be way wrong here, so please correct me if so, but it seems like a Viggen military simulator from the early 1970s might have used a flipping rectangle atop a moving map or something(to simulate a radar screen). And maybe Heatblur is using the military simulator footage to detail their own simulator. Like I said I could be completely wrong. I just think the rectangle at the bottom of the radar beam looks out of place, and I can't think of why it be squared off there.

Firing from LTWS will force it to switch to STT if firing the AIM-7 or to TWS if firing the AIM-9 or AIM-120.

The DCS JHMCS cross-hair seems big compared to the real life photos of it. I understand that depictions in manuals can be a little off from the real life depiction. DCS JHMCS Real JHMCS I don't know if it changes with certain modes (NAV vs AA/AG), or if it's always supposed to be small. There are also some minor differences with the positions of symbols, numbers and a few of their sizes. Also, the 'target locator line' varies in length depending the angular difference to the target. See example below

The F-16 Block 15 ADF is known to have the ALR-69 RWR. There exist no evidence that the Italians upgraded the leased jets with new RWRs. (and if they had, it probably wouldn't retain PRF audio). The ALR-69 provides RWR audio, as is heard in this video. As for the ALR-56M, I do not know for sure if it does or doesn't provide PRF audio. But based on what pilots have stated, and the functionality of the ALR-56C (F-15 TEWS), it appears it does not provide PRF audio.

Pretty sure the J-11A uses the same radar as the Su-27, Su-33, Mig-29... So it should be the same indication as those.

With Auto blanking the JHMCS is blanked in HUD and in Cockpit.

I do not believe the "JHMCS FOV" ring in DCS is actually displayed in the real life JHMCS. DCS World JHMCS FOV ring: Real World JHMCS: I believe only the AIM-120 and AIM-7 FOV are displayed when they are selected. Also, it looks like the size of the DCS cross hair is a little big.

This Jet appears to be one of the early block F-16s leased to Italy. http://www.f-16.net/f-16_users_article10.html Thus, it would have a -69.

This video demonstrates the PRF audio provided by the AN/ALR-69 Radar Warning Receiver (RWR) found on older USAF F-16Cs as well as most export F-16Cs. I believe it is a single emitter being heard, and most likely that of another F-16, as the pilot mentions "buddy lock". The high pitched tones are most likely the MPRF waveform of the other F-16. Why? 1. LPRF has too low a PRF to make those high pitch tones. 2. HPRF has too high a PRF for humans to hear. Thus HPRF would sound like white noise as the energy scanned across you. 3. There are multiple tones being heard, which would coincide with the use of a "3 of 8" MPRF waveform (where 8 different PRFs are used). I do believe the AN/ALR-56M RWR that replaced many of these units in the USAF only provide synthetic tones (launch, Lock, New guy). Which would make sense as the ALR-56C of the F-15 only uses synthetic tones as well. Not sure which route ED plans to take with this. Reference: 3 of 8 MPRF schedule: http://www.whitehorseradar.co.uk/PublicationsUPDAT/conf_2006_IEEEWDD_MPRF_clutter_scenes.pdf ALR-56M: https://fas.org/man/dod-101/sys/ac/equip/an-alr-56.htm ALR-56M probably only uses synthetic tones: https://forums.eagle.ru/showpost.php?p=3312720&postcount=44 (Of note, the pilot in this reference probably only flew in ALR-56 equipped F-16s. And not with an ALR-69.)