Three actually, you need three recievers with perfectly syncronized timers between them so they can compare signal detection times.

George D. Filiotis
Are you in support of the ban of Dihydrogen Monoxide? You should be!

The whole detection idea is going to be twofold (at least after reading your input ). When you order a unit to move to a location, that order can be intercepted by a single enemy unit/structure - and therefore so can the location.

However, for the enemy to simply locate one of your units, there must be three enemy units around - for triangulation - and even then, your unit must make some kind of radio emission. If nothing''s happening, your unit has no reason to transmit.

That will also work for comms bunkers - if you send orders to a unit that is out of enemy intelligence coverage, but the orders travel via a comms bunker, it can be located using the method described above.

Of course, as suggested the triangulation technique is no simple matter. Therefore, the method must be explicitly ordered - so if your enemy is distracted, the chances are you''ll get through unnoticed because s/he doesn''t have time to go and triangulate areas of the map. Although permanent triangulation pillars could be established, they would still need to be activated - and they only work on single burst.

As for being scanned, yeah, I think I should implement that.

Not sure about all of this though. My primary focus *is* on intelligence, stealth and dirty tricks - but there are so many other cool features I wanted to put in too... ah well. Such is the life of the lone wolf.

I suppose I''d better not give too much away - god knows who might read this...

Oh, and my call for help - if anyone''s interested - was serious. I''m no artist.

Superpig
- saving pigs from untimely fates
- sleeps in a ham-mock at www.thebinaryrefinery.cjb.net

I disagree that you need three units for triangulation. That is neccessary for distance based triangulation, in systems like GPS for example, where a time signal is transmitted and the receivers can therefore deduce how far away the transmitter is. In such a system you do need three recievers for reliable 2D location, and four for 3D location. But if the transmission is not a time signal (or if the message is encrypted and the time signature unreadable) then it becomes quite a technical challenge, as it becomes very difficult to accurately judge the distance from the transmitter.
But old fashioned direction finding is more appropriate for locating enemy transmissions, partly because you only need two simple receivers, and partly because it doesn''t depend on the content of the transmission. This method was used to great effect during WWII to locate u-boats by their brief morse code transmissions, and all they needed was two coastal radio stations with highly directional antennae (yes they had more than two, but only two were needed to get a location).