On Saturday 14 Feb 2004 6:27 pm, Norman Vine wrote: <snip> > AFAIK > In most systems if an object is represented by a point location it is > expected that said location will be 'near' the center of the object in > question. > > In the case of radar the center point of the 'target's on-screen echo' when > extrapolated to account for the 'display properties' is most often close to > the center point of the object 'sensed'. > < I know it is really much more complicated then this but ... it is > certainly closer to the center point then one of the extremities unless > that extremity and the center point line up on a vector emanating from the > radar > > > Note this has nothing to do with how FGFS has or will do things but > reflects common practice and deviation from this will 'often' have to be > accounted for.
Oo! Oo! but this is a simulator, isn't it? So won't it simulate the electromagnetic pulse from our aircraft's antenna, modify it for the medium between us and the target, query the position (of the nose :¬) and orientation of the target, calculate the effective radar cross-section, and return the reflection to the receiver? We wouldn't just draw a blip on a radar instrument screen, being a projection of X.target, Y.target, Z.target, would we? (OK, maybe if the target squawked). :-P Jonathan I've got a more serious observations on the Reference Point Skirmish, though. At least in the early part of the debate it would have helped if we had a diagram to refer to, just to get the nomenclature clear. A picture paints 1K words, etc. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
