Patent ID: 7511824

Claim:
A laser radar system comprising: a first coherent laser radar section including: a laser source that generates a first laser beam at a first chirp rate, an interferometer that splits the first laser beam into a first target beam and a first local oscillator beam, and generates a first combined target beam from a first reflected portion of the first target beam and the first local oscillator beam; a second coherent laser radar section including: a laser source that generates a second laser beam at a second chirp rate, the second chirp rate different from the first chirp rate, an interferometer that splits the second laser beam into a second target beam, incident on the target at the same location as the first target beam, and a second local oscillator beam, and generates a second combined target beam from a second reflected portion of the second target beam and the second local oscillator beam; and a processor that determines a range and a range rate of the target unambiguously from the first combined target beam and the second combined target beam.