Can you confirm, is the UAV detection range a sphere or a Cylinder? A sphere: UAV detects when you are within detection range distance in direct line to the UAV, creating a sphere around the UAV. Target altitude difference between target and UAV matters in detection range. A Cylinder: UAV creates horizontally a circle around itself with the detection range radius and then everyone who is inside the tube below or above that circle gets detected. Target altitude difference between target and UAV is ignored in detection range.
Excellent question. To complicate matters a bit, how is the target checked? Does any part of the skin of the model inside the area of detection allow for detection? Or does the center (center mass, center model, arbitrary center model point?) need to be in the area? Or whole mech inside the area? Considering how things like missile lock-on works, there seems to be some pretty thick, fuzzy gray lines for boundary conditions. I am not online a lot, but I would be willing to volunteer an hour or so in private matches to help test the boundaries if you would like to pursue this more.
I have asked this question in a match and it seems that the consensus is that it is a cylinder, not a sphere. I tested it in testing grounds and it seems to be a cylinder.