ELINT

[Jenrick]

A couple of questions:

 

1) There are some oddities when trying to identify radars such as the search radar for the SA-11 and the track radar for the SA-3 being identical across all the identifiers (band, freq, etc) we have to work with. A cursory google search, indicates at least this pair probably shouldn't be identical. Are these intentional, or just accidental?

 

2) Also the data doesn’t match up to any of the info in the DCS encyclopedia regarding Band and Freq (I haven’t seen an entry for timing but I haven’t bothered to scroll all the way through). Would it be possible to have either the encyclopedia changed, or the emitter data changed so that they match each other? This way there would at least be internal consistency in DCS.

 

Thanks!

[RagnarDa]

ELINT

 

Hi! The RWR in Viggen (and by extension the ELINT-functionality) works like this: when a unit in DCS has its radar signal picked up by the RWR or U22 antenna on the Viggen the type of unit is checked within a database located in the file “DCS World/mods/aircraft/AJS37/cockpit/scripts/RWR/init.lua”. If it doesn’t find an exact match for the type of unit it looks for a match for the broader category of units like SA-10SR->Air-defenses->Ground units. If it still doesn’t find a match it uses an algorithm that takes the max detection distance of the radar (within DCS!) and calculates an estimate of the PRF frequency, carrier frequency and scan-time. Most of the time the estimate comes close enough. The reason for using either broad categories or an algorithm is for “future-proofing” the module for whatever could be added to DCS at a later stage (like mods for example). What is probably happening here is that both of those radars have the exact same max detection value within DCS and the algorithm gives the same values based on that. If you give me the likely values of each of the radars I could add them to the database, or maybe the max detection range for one of the radars in DCS should be changed.

[Jenrick]

Thanks for the fast response!

 

Interesting to hear how it all works. I have zero knowledge regarding actual frequencies and ranges, but I will certainly be happy to look into it and let you know.