Patent ID: 11949456
Assignee: BALL AEROSPACE & TECHNOLOGIES CORP.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 6:
7. A communication system, the communication system comprising:
a laser emitter transmitting a first code of a first wavelength toward a target through a first wavelength filter switch;
the laser emitter transmitting a second code of a second wavelength through the first wavelength filter switch, wherein the first and second codes are generated simultaneously;
a variable waveplate or other filter receiving light, wherein the received light comprises one of the first code and the second code;
a processor determining, based at least in part on a distance to the target, an expected wavelength;
the communication system receiving a backscattered code of a third wavelength, wherein the third wavelength differs from the first wavelength;
the processor determining the first wavelength is the expected wavelength;
a second wavelength filter switch filtering the backscattered code from the received light and
the processor synchronizing the laser emitter based on the filtered received light.