|Your Clothes Will Track You|
Techniques to keep people and equipment on target. That is why the Military relies on GPS or, when GPS is unavailable, precise sensors for navigation. These sensors, such as gyroscopes that measure orientation, are bulky and expensive to fabricate. For example, a single gyroscope designed as an inertial sensor accurate enough for a precision missile can take up to 1 month to be hand assembled and cost up to $1 million. DARPA has made progress in developing less expensive fabrication methods for inertial sensors and is making them orders of magnitude smaller and less expensive.