Patent ID: 7193556
Filing Date: 2007-03-20
Classification: F41G,F42B,G01S

Abstract:
1. A system for measuring a position of an object in flight relative to a reference location, the system comprising: three or more illuminating sources, each disposed in a predefined position, the three or more illuminating sources together emitting a plurality of distinct polarized radio frequency signals to provide temporally synchronized, pulsed radio frequency signals that illuminate the object; one or more sensors disposed on the object for receiving the plurality of distinct polarized radio frequency signals from each of the three or more illuminating sources in flight; and a processor for measuring a time for the plurality of distinct polarized radio frequency signals to propagate from each of the three or more illuminating sources to the one or more sensors and to determine a position of the object relative to the three or more illuminating sources based on the measured times.