A2A Radar and Passive Radar

[Crylia]

Hello guys i have some questions about the Radar of the Viggen. I heared that it has a A2A radar but i didnt found anything about it on YT or in the Internet. Does some of you know how it works? Second question is about the Passive Radar option, i didnt figured out how to use it correctly and i dont really can make out a different to the normal mode.

[QuiGon]

Hello guys i have some questions about the Radar of the Viggen. I heared that it has a A2A radar but i didnt found anything about it on YT or in the Internet. Does some of you know how it works?

Well, how about checking the official manual that comes with the module?

It explains how to use it very well:

The radar can be used in a limited air-to-air mode, which is used to roughly determine the position of potential targets. The radar mode is essentially the ground mapping radar but elevated upward. As such, it is unable to display targets as specific symbols or targets, but merely radar returns in an unfiltered form. The performance of the radar is dependent on the contrast between the target aircraft and the ground clutter. The radar in search mode cannot be used to lock the target.

 

However, the radar can be used for ranging to determine whether the target is within the selected weapon’s envelope.

 

The air-to-air mode is selected by setting the weapons selector to any of the air-to-air weapons positions: RB05 LUFT (rb05 A/A), AKAN JAKT (gunpods A/A), or IR-RB (IR missile) and then setting the radar mode to either A1 (PPI) or A2 (B-scope).

 

The elevation of the radar is centred to +1.5° relative to the horizon, and can be manually elevated using the radar elevation knob. In the air-to-air mode, the an elevation indicator is added to the top part of the radar scope indicating the elevation of the beam relative to the 1.5° centre.

 

 

Second question is about the Passive Radar option, i didnt figured out how to use it correctly and i dont really can make out a different to the normal mode.

It should only display incomming radar signals (e.g. jamming), but I have never tried it. Try pointing it at a jammer and see if it displays anything, but it's highly possible, that it is not working, as I've never heard of anyone using it. Might be worth to investigate, thanks for bringing this up :thumbup:

[Slutcher]

The Viggen does not have an independent A2A radar. However, you can use its A2G radar for basic A2A purpose by turning the antenna elevation upwards. And there is no such thing of "locking" the target, it just provides you with the bearing and range info.

[Retnek]

...

It should only display incomming radar signals (e.g. jamming), but I have never tried it. Try pointing it at a jammer and see if it displays anything, but it's highly possible, that it is not working, as I've never heard of anyone using it. Might be worth to investigate, thanks for bringing this up :thumbup:

 

I've tested passive radar and ECM via U22/A against a Russian Molniya-class Corvette. Just a few flights, second check by someone else will do good.

 

Looks like the passive radar is working as expected if one starts it just by switching it on via the passive radar selector. Shows the noise from the direction of the ship, moving with changing directions. If I'm in an active mode before that, the ships dot remained on the screen even after switching to passive mode. Maybe radar has to be in mode A0 before passive mode is working a intended, else the radar remains in mode A1 or A2?

 

Jammer is doing fine against the ships radar. Registered the ships radar and does the jamming +/- 60 degrees of the planes frontal sector. Imho it reduced the range when the corvette open up fire, too.

[theOden]

Yes, turn off radar when using passive mode.

 

My procedure attacking naval targets such as missile Cruiser Moscow is searching in SPA with radar at 120km (max) from 500m ASL and when spotting the little bugger I mark his position (T0-TV) and turn radar off.

 

Now, still in SPA, I select his mark with MÅL and datapanel 1 (M1 should show) and activating PASSIVE and going back to NAV.

 

Descending to 10m ASL I can now track my distance and at 30km out I flip the SAFE trigger and start a 5 deg climb waiting for the red warning light to come off and as it does I launch both Rb 04E and bank hard for a 180 turn descending down to 10m ASL again.

Missiles usually burn out before hitting target at this distance but they still have speed enough to reach him.

 

He will launch at you when popping up but the naval SA-10's should not be able to catch you.

 

Now try the same approach staying at 500m ASL and see how well that goes (you should have a missile in your face before 40km mark).

 

In general I use the radar very sparsely and most often run in PASSIVE to have a picture of steerpoints (or brytpunkt, BP, as we sveedenland folks say). Sadly setting inbound and outbound heading to a steerpoint is still bugged (getting those lines you see on your landing steerpoint).

[Retnek]

Yes, turn off radar when using passive mode.

 

Thanks for confirmation, another "bug or feature" question solved.

 

Sadly setting inbound and outbound heading to a steerpoint is still bugged (getting those lines you see on your landing steerpoint).

 

GOOD hint, so that helpful detail should be visible not only during landing procedures, but for "standard waypoints, too? Once or twice I had the impression to see those heading lines without being in a landing mode. But currently I'm a bit overstrained with the plane and tend to ignore confusing details. :joystick: