Beamscanner

Additionally, Point defense SAMs will engage PGMs under the right conditions. (I've seen the SA-15 and SA-19 do this ingame)

was great to see the RB-04s perform realistically. It makes sense that nearly all of them would home in on the same (highest RCS) target when fired from the same aspect angle. I doubt the radar seeker (a compact 1960s consumable) is capable of tracking multiple targets simultaneously (let alone use DSP to filter tracks and communicate with other RB-04s in air). So open up the formation just prior to the salvo launch, that way each missile has a different aspect angle.

Also, the C-130 can look like any other Prop plane(like a P-3) at long ranges.. So it's ambiguous until you get closer to it.

Not taking a stance on this either way, but not owing someone something does not mean that you couldn't have lied to them. You're trying to relate two separate things.

MIG-29As account for the majority of the operational FULCRUMs in use today, followed by the S, B, G; all of which use the same radar/RWR/EOS (yes the S has a modified SLOTBACK radar, but it's performance is the same). Only 3 MIG-35s and ~60 or so MIG-29Ks exist right now, most of which are owned by India. So I really don't see your point.

LOL, no. (the read was good, yes. But you misinterpreted what he said.) The radar has similar dog fighting modes to western radars, beyond that they are extremely different. Also, as you've seemed to keep posting this, the MIG-29 (as he states) is not competitive outside of WVR (inferior radar, RWR, BVR missiles, cockpit design, automatic control limits pilot input). The MIG-29 is competitive in a knife fight, with its great acceleration, maneuverability, and R-73 missiles/HMS. Also, the 1980s Russian designed EOS is not capable of detecting aircraft beyond a couple miles. The system is seen as a secondary sensor, meant to support passive intercepts with ground controlled intercept (GCI) and to back up the radar against receding targets which the radar struggles to detect, due to poor design choices (guard antennas for side-lobe cancelation attached to frame of jet instead of radar gimbal). If anything the DCS version is superior, with the laser range finder measuring out targets at 30+ miles.

The majority of the sounds are incorrect.. The only sounds that are accurate are the synthetic tones programmed into the RWRs. These usually indicate a new emitter or missile launch. Real RWRs (analog and digital) convert the PRF of a signal (along with the varying amplitude from the radars scan) into a audio tone for the pilot. Nearly all radar models have different PRFs or PRF patterns, and different scans and scan patterns. As such, nearly all of them sound different from one another. Pilots have made use of this for decades now to help recognize specific radars looking their way.

Most RWRs, especially from that era, dont use time difference of arrival to determine angle. They used amplitude difference between the antennas. Which isn't nearly as accurate, but also not as complex or costly.:) De-selecting 'Search mode' should filter out the target acquisition, early warning, and air surveillance radars. (which are likely associated with a threat system) The reason for this, is that these radars are usually left on for long periods of time (even in peace time), and can clutter the display with emitters that don't necessarily indicate an intent to engage. Im still praying ED comes out with realistic(or pseudo-realistic) Radar audio for the RWRs ingame. The generic beeps currently ingmae do no justice. For those interested, there is a real SA-8 audio file hidden in the DCS folders, so there is hope. Eagle Dynamics\DCS World\Sounds\Effects\Aircrafts\Cockpits\RWR

Getting the IHAWK Missile to "work" on the tomcat won't be too difficult from an electronic perspective. Though it wouldn't be effective. The IHAWK missile uses no datalink what-so-ever, and homes on its target via an X-Band CW Illuminator (which the AWG-9 has to support it's older sparrow missiles). So really engineers just need to tune the AWG-9 'CW mode' and the passive missile seeker to the same frequency and it 'should' work. However, unlike the IHAWK illuminator, the AWG-9 illumination would have a doppler shift because of the velocity of the F-14. Because the original IHAWK illuminator wasn't in motion, its unlikely that the missile has a rearward facing receiver for doppler referencing.(no need to receive a reference signal when you 'know' the frequency of the illuminator, and you know it wont be doppler shifted) Because the illuminator has a doppler shift from the F-14's motion, that the missile is unaware of, it will likely home in on any chaff. Normally chaff gets filtered out because it has no doppler shift, but because the illuminator itself has a doppler shift that the missile is not aware of, it'll think the chaff return has a velocity of it's own and thus not reject it.(this also applies to ground clutter, for the same reason, and is thus not effective in a look-down engagement) Now it wouldn't be effective at mid-long ranges, as the missile would fly PN all the way, and the seeker needs to pick up the reflection from the rail otherwise it'll go ballistic. So all in all its likely a POS missile that you wouldn't want. Getting the AA-10 to work would require the replacement of AWG-9 computer and signal processor (and likely a minor re-tuning of the transmitter), in order to support the missile's datalink and illumination. Though, if I were a betting man, I'd say they didn't intend to allow the AWG-9 to support a datalink for mid-course and instead are banking off a short range mode of the missile that only goes off the CW illumination, thus not needing to replace the computer/signal processor. Though, with some re-tuning, they could allow the AA-10 rear-facing receivers to capture the CW illumination for referencing and thus allow the missile to properly reject 0 doppler returns (such as chaff and ground clutter). But again, if they went this route (ie no datalink) then the missile seeker needs to be close enough (or the Target RCS needs to be large enough) to acquire the CW reflection while the missile is on the rail. If anything, their attempts to get these missiles to work show how desperate the Iranians were to keep their F-14s armed. No worries for them now though, they just got 99% of their military sanctions lifted and hundreds of millions of dollars in cash. Now the question is, do they want their Super Flankers in blue or grey...

I don't get where people come off by saying the AIM-54 is bad against fighters... It has far more energy than an AIM-120C, houses a larger seeker (that also uses a mono-pulse receiver), and its high ALT terminal dive provides it substantial end game energy at long ranges.. I'll be firing the AIM-54C at Rmax1 before the enemy gets within Rmax2..

in game, yes.. in real life, no.. See my post on this (#4 in my post) https://forums.eagle.ru/showthread.php?t=158152

Are you saying that the real SPO-15 does not provide signal audio? Because that's a pretty flawed set-up if you ask me.

The Dynamic Campaign is the main reason I fly BMS.. If a Dynamic Campaign (with a progressive OOB that takes into account what you've destroyed) makes it to DCS, I'm done with BMS..

pseudo-random noise usually refers to phase noise (phase modulation). Modulating the phase of a signal alters it's coherency in the frequency domain, and thus broadens the instantaneous frequency of the signal. (the bandwidth of the signal expands) This is one method of generating a "spread spectrum" signal. Most radars require velocity information, and thus need a coherent signal. That is, a signal that exists in a narrow band of the spectrum at any given instant(generally speaking, coherancy useally means a constant phase velocity, and thus a stable narrow frequency). In order to perform Doppler processing with a pseudo-random phase noise spread spectrum signal, the receiver must be aware of the exact phase modulation used on each pulse so that it may perform a phase filter process (reversing the phase modulation) and extract the fundamental frequency of the signal. Thus making it a coherent narrow band signal, suitable for Doppler processing. In terms of electronic protection. This technique creates a wide instantaneous bandwidth, which spreads the power over the spectrum, making it more difficult for enemy receivers to pick up. It also makes it more difficult for enemy jammers to completely cover. Additionally, deception jammers (like those used on fighter jets) wont be able to perform all of the techniques available to them against a signal using PR phase noise. For instance, because the enemy jammer cannot know the fundamental frequency of the signal it wont have any control of the false tracks that it creates. (ie it wont be able to 'select' the velocity of its false tracks, because without a means to strip the signal of its phase modulation the fundamental frequency will remain ambiguous. In fact, the jammer may unintentionally emit on a frequency that is being filtered out with the ground clutter and could be completely useless. Because of this, the jammer will likely chose to emit a spread spectrum signal as well with random phase noise in order to create sporadic variables in the return. another option being to simply repeat the phase modulation of each pulse and attempt to over power the skin return. But this wouldn't be deception jamming, its "coherent noise jamming". EDIT: all of the above refers to radar transmissions. Phase coding is also used in communication signals as a means to filter out interference from other signals in the environment and as a means of encrypting embedded data.

Most of the emitters that have those long scans operate below the rf range of most fighter RWRs. Also, the OP mentioned that the RWR on the mirage acted differently than that of the F-15.. So I assumed he was experiencing something other than the 8 second decay rate of the RWR as that would result in the same outcome for both Mirage and FC aircraft.(as the f-15 has the same feature) I don't have the mirage module, but if you see a signal swing around you continuously through a merge (at medium to high altitude) then it's working like most RWRs IRL. If your low to the ground, then a real RWR might display a bearing to a reflection off the ground from the main beam of the radar, instead of a bearing to the radar itself via a sidelobe. Real life indications can be skewed based on the main beam position and the surrounding environment.

IRL, depending on the sensitivity of the RWR, you might still be able to pick up signals that are not directly looking at you if the received signal strength is powerful enough. (being so close to the transmitter would likely mean that the signal can still be seen even if your not inside the radars "view") If anything, the FC3 RWRs are in the wrong. And the RWR in the Mirage is working "spot on". Some old digital RWRs have a delay because of the limited processing power of the day. Older analog RWRs didn't have the computational bottleneck, and newer digital RWRs can processes data much faster.. I'm not sure if the Mirage falls into this category or not. Depending on the radar, certain radar modes may require more frames (scan sequences) with raw returns before a track is allowed to be built. Now this is very specific to the radar and how it is designed, but in most cases if the radar is expected to process returns in the Doppler clutter region (wide aspect search) it will require a return to populate in more frames before building a track on it. This is done to reduce the likelihood of false targets being built from ground clutter. 'Close combat mode' usually implies a wide aspect search, which means the radar now has to process EM energy in the ground clutter region of the Doppler spectrum. So yes, realistically the delay makes sense.

Target position relative to what? Perhaps a fixed reference point is created and provided to the missile at launch, and the target position is based off that reference point rather then the relative position from the jet(which is ever changing).

Potentially, we just need hard conformation. Keep in mind that it would need more than just target range from the AWG-9.. As the AWG-9 (the jet) can move around in space. Thus the missile would need to know 3 things -it's own location (we are all certain it has this) -The location of the AWG-9 (perhaps from the "datalink") -The target's range from the AWG-9 (presumably from the "datalink") without a doubt, the missiles aft antenna will pick up the side lobes of the AWG-9(certainly for data reception purposes, and potentially for bi-static FM ranging). You can use FM in pulsed operation as well. For instance, you may transmit pulse group RF agility. As an example, the pulse train may look like A__A____A___B__B____B___C__C____C The example above shows a 3 element 3 position stagger with embedded FM for ranging. (each letter representing a different RF and the spacing the various PRFs, in this case 3 different RFs and PRFs being used) Because we've colored our pulse groups, we've effectively tripled our maximum unambiguous range. Using the aforementioned PRF modulation also increases our maximum unambiguous range and using at least 3 different PRF/PRIs allows us to remove "ghost" returns. (The downside of this, is that it becomes difficult to integrate pulse groups of different frequencies for Pulse Doppler processing.) So, hypothetically, the missile could associate a pulse and reference it against it's reflected counterpart and use the time difference to determine a distance. Sidelobes represent the radiation of Electromagnetic energy outside the focus of the main beam(weak beams offset from the main powerful beam). These areas are a fundamental product of all practical antennas. Even our flashlights have sidelobes that surround the powerful center of your flashlights beam. The amplitude, shape and position of sidelobes depends on the antenna shape and frequency emitted. Below you can see a generic radiation pattern of a directional antenna, take note of the main beam and it's sidelobes and back lobe. It is important to note that no practical antennas are perfectly directional, and thus they all produce sidelobes to some degree. Keep in mind that radiation patterns also represent the reception pattern of EM energy. This is important, because it means that even if a signal isn't in the main beam (or beamwidth) of your antenna, if it's powerful enough (or close enough) it will still come through your receive assembly. I made a thread on this awhile back, because I had been shot down with a radar guided missile that never populated into my RWR, presumably because it was directly below my jet and not in my RWR antenna's main beam. (which isn't a realistic outcome)

I think what he meant was, how does the receiver on the missile determine range when the transmitters location is unknown and the receiver does not sit inside the direct path between the target and the transmitter. Here is a simple diagram Forgive me if I missed something.

Nice find.. As per that document, the AIM-54 may be fired one of 3 ways. Air Combat Maneuvering: A short range Launch and forget mode that does not require the AWG-9 to maintain track on the target. In this mode the missile is given a guidance command and told to go active immediately. No Illumination signal is used, and up to 6 targets can be engaged simultaneously. (page 20) Single Target Track: In this mode the AWG-9 maintains track on one target and may launch a AIM-54 in Semi-active mode while the AWG-9 illuminates the target. The AWG-9 will also send track data and steering commands to the missile via coded messages in the radar pulse.(just as I speculated) As per the document, the missile will not ever go active in this mode of operation.(page 20-21) Track While Scan: During a TWS shot, the missile is first given preset instructions for an optimal flight path. The missile then flies out and at a point starts receiving track data and command messages from the AWG-9 radar. Eventually, the AWG-9 will transmit a missile message known as the Active Transfer Command (ATC) which tells the missile seeker to go active. Missile Messages are still transmitted from the AWG-9 until the track is lost, just in case the missile seeker fails to find the target. Up to 6 targets may be engaged in this mode. (page 21) Nothing in the document mentions the illumination or Semi-active guidance during a TWS engagement (or any engagement involving more than one missile). That's not to say that this doesn't happen, but the lack of input in this detailed description tells me that no illumination is used. At the very least, we know that data is transmitted from the radar to the missile which would alleviate all of the ambiguities that would have arose from a theoretical system that only used intermittent semi-active homing against six simultaneous targets. The reason so little information exists on the datalink, is because the its not a formal "datalink". But rather just missile messages from the AWG-9 radar itself. Likely in the form of Pulse Position Modulation, a common technique of that time frame. So, we should not expect to detect an AIM-54 launched in TWS. Though, our RWRs will see the AIM-54 seeker when it goes active. On an entirely unrelated note, it appears the AWG-9 uses a combination of PRF modulation and pulse group RF Modulation (FM ranging) to acquire unambiguous range on its targets. Thanks Delta!

Anyone know the RDI's current burn through range against a jamming F-15C?

High speed energy fighter, similar to the 190 series. Heavy and fast with a great roll rate, you'll want to take the fight vertical with this guy. Plane was suited well against the slower lightweight A6Ms, so long as the pilot was diligent and maintained his kinetic or potential energy. Taking this bird into a horizontal turning fight is not normally a good idea. As far as DCS goes, she'll do fine so long as you don't get low and slow. Though keep in mind, all of our WW2 fighters are either energy or BnZ fighters right now. Taking her in the vertical with a K-4 or D-9 on your 6 will probably lead to your death, as they'll follow you up just fine. http://www.airbum.com/pireps/PirepPeanutCorsair.html DCS WW2 will really get interesting when we finally get some turn fighters, like the Spitfire and the Zero:)

Im trying to get my F-15C radar to display on my 2nd monitor. I've spent hours playing with the LUA files with no success.. When I hit RCTRL+ENTR all I get is my axis plot. This is the data I've tried using ------------------------------------------------------------------------------ _ = function(p) return p; end; name = _('Export example'); Description = 'Export example'; Viewports = -- Put your values in , and delete all exports that you don't want to use ! --[[ List of Exports: ---------------------- Eagle Dynamics A-10C = ---------------------- MFCD_init.lua ED_A10C_LEFT_MFCD ED_A10C_RIGHT_MFCD CDU_init.lua ED_A10C_CDU DIGIT_CLK_init.lua ED_A10C_CLOCK AN_ALR69V_init.lua ED_A10C_RWR CMSP_init.lua ED_A10C_CMSP CMSC_init.lua ED_A10C_CMSC freq_status_init.lua ED_A10C_UHF_FREQUENCY_STATUS preset_channel_init.lua ED_A10C_UHF_PRESET_CHANNEL repeater_init.lua ED_A10C_UHF_REPEATER ---------------------- Eagle Dynamics Ka-50 = ---------------------- ABRIS_init.lua ED_KA50_ABRIS SHKVAL_init.lua ED_KA50_Shkval UV_26_init.lua ED_KA50_UV26 PVI_init.lua ED_KA50_PVI Ekran_init.lua ED_KA50_Ekran CautionLights_panel.lua ED_KA50_CautionLights --]] { Center = { x = 0; y = 0; width = 1920; height = 1080; viewDx = 0; viewDy = 0; aspect = 1.6; } } --////////////////////////////////////// -- Eagle Dynamics A-10C = --////////////////////////////////////// ED_A10C_LEFT_MFCD = { x = 1977; y = 462; width = 378; height = 378; } ED_A10C_RIGHT_MFCD = { x = 2925; y = 461; width = 376; height = 376; } ED_A10C_CDU = { x = 2980; y = 80; width = 300; height = 300; } ED_A10C_CLOCK = { x = 2700; y = 80; width = 200; height = 200; } ED_A10C_RWR = { x = 2300; y = 100; width = 170; height = 170; } ED_A10C_CMSP = { x = 1985; y = 125; width = 220; height = 75; } ED_A10C_CMSC = { x = 1985; y = 275; width = 220; height = 75; } ED_A10C_UHF_FREQUENCY_STATUS = { x = 2752; y = 300; width = 100; height = 45; } UIMainView = Viewports.Center --////////////////////////////////////// -- Eagle Dynamics Ka-50 = --////////////////////////////////////// ED_KA50_ABRIS = { x = 500; y = 600; width = 300; height = 300; } ED_KA50_Shkval = { x = 0; y = 600; width = 300; height = 300; } ED_KA50_UV26 = { x = 300; y = 600; width = 200; height = 300; } ED_KA50_PVI = { x = 800; y = 300; width = 300; height = 300; } ED_KA50_Ekran = { x = 800; y = 600; width = 300; height = 300; } ED_KA50_CautionLights = { x = 800; y = 0; width = 500; height = 500; } --////////////////////////////////////// -- Eagle Dynamics FC3 = --////////////////////////////////////// LEFT_MFCD = { x = 57; y = 1134; width = 444; height = 444; } --------------------------------------------------------------- I see a bunch of LUA files in DCS 1.5 that I dont think were around when this thread was made. Should I be entering this data into a different LUA file?

I'm willing to bet the F-16 and AH-64 are not being developed under a restricted client contract. The site implies that these will be full fledged modules and not just desktop avionics trainers. I imagine that the only products that may be restricted to TBS are products that official clients have paid to be produced(and thus are owned by the client). And even then, a lot of the tools developed to make their product would no doubt become accessible for development in other modules.

You'll enjoy it! The Air Force really takes care of their people. And don't bother with all the college talk. If your not interested or not ready for college, don't worry about it. Too many make the wrong mistake and force themselves through a degree they don't want / cant afford / or never needed for their ultimate career. On a side note. As far as commissions go, I don't see the logic in immediately making a 4 year grad an officer over a distinguished active duty member who's been leading men for years. (yes, some programs exist taking only a handful a year, but the majority of Officers are straight out of college) If it were up to me, no one would receive a commission until they had finished a term of service as an enlisted.