The XINS project is a part of the aircraft autopilot design. It is a navigation system that provides flight data such as attitude, altitude, airspeed, and geographic location to be used in intelligently controlling an aircraft's flight surfaces.
The XINS started as an undergraduate EE senior project by Kyle Howen. The goal is to eventually see the XINS integrated into a full functional UAV autopilot.
The following video demonstrates the project: