Radio-based position location systems, antenna configurations, and methods for determining antenna configurations

摘要: A radio-based position location system for determining a relative of first object with respect to second may include radio operatively associated the object. directional antenna having at least high gain region is mounted so that directed generally outwardly from and defines detection zone. also oriented connected antennas exchanges signals determine in part by time-of-flight signal. The are primarily exchanged via when zone, whereas