Automatic Vehicle Locator
Pay only for what you use Low cost full line of solutions
TLRSystems.com

Inertial Measurement Unit
3D orientation and inertial data miniature, low-cost, high accuracy
www.xsens.com

InterSense, Inc.
Miniature Inertial Sensors Inertial-based Tracking Systems
www.intersense.com

28 Gram UAV Autopilot
Integrated GPS, gyros, pressure sensors, includes GCS software
www.micropilot.com