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

Claim 0:
1. A method of synchronizing a laser emitter, the method comprising:
generating simultaneously a first code of a first wavelength and a second code of a second wavelength;
transmitting, with a first wavelength filter switch, the first code of the first wavelength from the laser emitter toward a target;
transmitting, with the first wavelength filter switch, the second code of the second wavelength from the laser emitter toward the target;
receiving, at a variable waveplate or other filter, light, wherein the received light comprises one of the first code and the second code;
determining, based at least in part on a distance to the target, an expected wavelength;
receiving a backscattered code of a third wavelength, wherein the third wavelength differs from the first wavelength;
determining the first wavelength is the expected wavelength;
using a second wavelength filter switch to filter out the backscattered code; and
based on the filtered received light, synchronizing the laser emitter.