Redar Implementation on Map

Hi all,

I have struct with, how can i implement radar system on the map which i displayed.

Let me explain the scenario.

  1. I have rendered a map. Now i want to put a radar detecting system, which will rotate around 360 deg, contineously.

My 2 nd part is ready, which is a unknown air body(may be plane).

Now i want my radar to detect( here now no plans to do collision detection) but simple radar system implementation.

Please help me to know, if any built-in function or some login which will help me to show a radar syetem in the application.