Radar Design

So this is the design I want for my radar, the last most important thing I need to get done before my VIVA presentation, I need to implement this radar design and get it working in UDK.

The faded wedge you see is suppose to sweep in a circular motion around the entire radar while the arrow is going to point towards the spot the player needs to go, and when the player fixes the power at that place the arrow should point at the next area which will be accessible only after the player has discovered all clues in the area he is presently in.