DAS targeting vs radar targeting

The F-35 compared with other modern jets.
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by element1loop » 02 Feb 2018, 03:04

blindpilot wrote:
But the conversation seems to be going past you, so if you can give us some little clue of where you are coming from, then you will get respect.

BP


phishing BP? That's need to know ... don't sweat it mate ... I can cope without respect, cheers. ;)

--

A couple of points to clean up before this part of the thread is put aside.

First, the point that lasers are active and can be detected.

Yup! ... so what? ... as per VHF detection of VLO ..."let's see you do something about it", applies.

Second, the implication that it can be detected by tactical aircraft.

The F-35 being the most advanced tactical aircraft to date, does it have such a detection system? If it does, would the detector isolate an emitter via this detection?

In other words, could it do something about it? How do you know? (a spec or source would be dandy).

Third, the suggestion that DIRCM can or will provide DAS with primary laser-range data ... in the sweet by and by ... love that song ...

That's a bit cart before the horse.

( f**king horse again ...).

It will be a * pre-requisite * laser-ranger capability in DAS/IRST that cues a DIRCM in order of tell the DIRCM precisely where to point in the sky.

An (allegedly) "passive" DAS/IRST system is NOT going to suffice for this (due to the need for vector, for this system and others)

(and I think dah photos are a bit ... ooooooooold ... just saying).

How else can DIRCM operate, react rapidly and apply energy efficiently? And it will have to be that, for DIRCM resistant weapons.

DAS will cue and 'drive' DIRCM engagements, like any other weapon, for any other priority target type and vector, except this target is a moving missile's sensor point in the sky.

In other words, DIRCM will not cue DAS or be ranging for it (except perhaps for a long-range track option ... maybe, ... like for a bright but distant BM pop-up, say, etc.)
Accel + Alt + VLO + DAS + MDF + Radial Distance = LIFE . . . Always choose Stealth


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by popcorn » 02 Feb 2018, 03:55

A simple google search of existing DIRCM systems eg. NG, BAE show that no ranging capability is required. The systems detect and track the IR image with sufficient accuracy to lase the incoming threat.
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by Dragon029 » 02 Feb 2018, 03:59

element1loop wrote:It will be a * pre-requisite * laser-ranger capability in DAS/IRST that cues a DIRCM in order of tell the DIRCM precisely where to point in the sky.

An (allegedly) "passive" DAS/IRST system is NOT going to suffice for this (due to the need for vector, for this system and others)


Every DIRCM on the market (that I've seen at least) already incorporates its own sensor for targeting incoming missiles; I don't see why this would have to be any different.

(and I think dah photos are a bit ... ooooooooold ... just saying).


The photo of the guy holding the DAS optical assembly is only from last year, meanwhile you're arguing that DAS has a laser because you're pretty sure you read about it (and are certain that they weren't talking about the EOTS's laser range finder) in an article from 15 years ago?


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by SpudmanWP » 02 Feb 2018, 04:25

element1loop wrote:And because small fleets of 40 or so, that can't talk to an F-22A or F-15, let alone have them, or other resources readily on tap ...


Are you referring to the F-35?

If so then you may be going off of very old or just wrong info as the F-35 can both receive and transmit with Link-16. This allows it to share data (both ways) with any 4th gen jet that also has Link-16 and it can send data to F-22s via Link-16.
"The early bird gets the worm but the second mouse gets the cheese."


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by gta4 » 02 Feb 2018, 04:26

So the question is
Can das+esm target rear hemisphere enemy and guide amraam?


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by SpudmanWP » 02 Feb 2018, 04:28

gta4 wrote:So the question is
Can das+esm target rear hemisphere enemy and guide amraam?


Like I said before, short answer... yes.
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by gta4 » 02 Feb 2018, 04:39

I just found proof that a single F35 can use das to measure the range of multiple rockets


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by SpudmanWP » 02 Feb 2018, 04:55

That's easy since the F-35 knows it's location, it can use the vector to the target to determine the launch point.
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by gta4 » 02 Feb 2018, 05:04

SpudmanWP wrote:
gta4 wrote:So the question is
Can das+esm target rear hemisphere enemy and guide amraam?


Like I said before, short answer... yes.

Nice. So It is safe to say F35 can easily "kite" any enemy that dares to turn on radar.

The quetion is, is there any jet that can detect and approach F35 without turning on its radar, i.e. those russian jets who equip super powerful irst, at least on the PR brochure


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by gta4 » 02 Feb 2018, 05:05

SpudmanWP wrote:That's easy since the F-35 knows it's location, it can use the vector to the target to determine the launch point.

The article says It pinpoints rockets that are already fired, aka flying rockets


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by SpudmanWP » 02 Feb 2018, 06:12

Yes & no.

If the rocket is lifting off vertically then it's easy to figure the launch point (directly below the rocket).

However, if the rocket is flying horizontally, then there would need to be 2+ F-35s that would triangulate the target.
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by blindpilot » 02 Feb 2018, 06:25

element1loop wrote:
blindpilot wrote:
...if you can give us some little clue of where you are coming from, then you will get respect.


phishing BP? That's need to know ... don't sweat it mate ... I can cope without respect, cheers. ;)
...


Oooo kay ... it would have helped to sort of know what you know, and what you don't know. Clearly you don't know a few things you've posted in error ... but as it is, you're wandering, seemingly trying to design an aircraft that has already been designed ... imagining conops that don't exist in the application of that design in the targeted battle space...
element1loop wrote: A couple of points to clean up .. lasers are active and can be detected. Yup! ... so what? ... does it have such a detection system? If it does, would the detector isolate .. could it do something about it? .. the suggestion that DIRCM can or will ...It will be... n order ... system is NOT going to suffice ...How else can ... And it will have to be that... DAS will .. like any other weapon, ... In other words, ... will not cue ....


So as above it ends up arguing about whether Mach 1.7 is faster than Mach 1.6, or if 100 nm is further than 90 nm, and the answer will still be, that those questions don't really apply any more. Those are 4th gen questions. Spec sheets are published if you're interested, and if they aren't they're classified, so speculation yields nothing. Fifth gen is a system of systems in a battle space across domains. And there will not be any 1 v 1 combat. Targeting is now done at a higher level than the sensor. What the sensors provide (including cyber/EW and space and off platform domains) is just part of that system "targeting."

Asking about "EO"(DAS etc.) targeting vs "radar"(what band, what freq?) targeting totally misses this critical part of the F-35 design. There is no stove pipe targeting in the F-35. I'm assuming (I have to .. need to know and all) your background allows you hear what I'm saying, and tracking(pun intended) where the laser is in a stove pipe, really is a red herring, even if you're wrong. :D :D , and nobody really cares about that anyway, certainly not the f-35 designers, who knew what they were doing at a system level.

MHO,
BP
Last edited by blindpilot on 02 Feb 2018, 06:43, edited 1 time in total.


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by rheonomic » 02 Feb 2018, 06:27

SpudmanWP wrote:Yes & no.

If the rocket is lifting off vertically then it's easy to figure the launch point (directly below the rocket).

However, if the rocket is flying horizontally, then there would need to be 2+ F-35s that would triangulate the target.


For a ballistic missile with enough measurements could probably also try and back propagate the trajectory to get an estimate of the launch site position.

blindpilot wrote:...the f-35 designers, who knew what they were doing at a system level.


Unpossible!
"You could do that, but it would be wrong."


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by blindpilot » 02 Feb 2018, 06:54

rheonomic wrote:
SpudmanWP wrote:Yes & no.

For a ballistic missile with enough measurements could probably also try and back propagate the trajectory to get an estimate of the launch site position.


Or ... it could just use the lat long provided by the integrated space sensor, or ... but hey, that's not in our stove pipe sooo... and we're just wondering, what if it was an F-16 with a pod ... or so it seems to me from the conversation, so if it was an F-16 with a pod then ... pick an answer. otherwise , spud's "yes and no" works ... or actually his earlier "yes" pretty much worked the first time.
:D :wink:

BP


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by blindpilot » 02 Feb 2018, 07:23

element1loop wrote:...(a spec or source would be dandy).
...

"Designated the AN/AAQ-37 and comprising six electro-optical sensors" (basically six passive EOIR cameras)
http://www.northropgrumman.com/Capabili ... fault.aspx

The laser is in the chin EOTS.
"•Tactical and eye-safe diode-pumped laser•Laser spot tracker• ... active ranging"
https://www.lockheedmartin.com/content/ ... ots-pc.pdf

There's a whole bunch of additional data sources, but let's start there... and it still doesn't matter in the big system of systems concept. I can get it all, with all my sensor systems down except MADL to my wing man.
BP


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