Patent ID: 6870608

Claim:
A spatial positioning system, comprising: a transmitter having: a rotating laser head adapted to emit light in the shape of a divergent rotating fan onto a field of measurement, a synchronization strobe adapted to provide a synchronization strobe beam in said field of measurement, said synchronization strobe including first strobes having first divergence characteristics, wherein said strobe beam has overall divergence characteristics different from said first divergence characteristics of said first strobes; and a sensor adapted to sense when said transmitter is oriented to sweep said divergent rotating light fan about a desired axis and communicate such orientation for a spatial coordinate determination; a receiver positionable in said field of measurement having a detector to detect said divergent rotating light fan and said synchronization strobe beam; and a processor adapted to determine at least one spatial coordinate of said receiver based on the detection of said divergent rotating light fan and said synchronization strobe beam.