Channel fusion using multiple measurements

A method, comprising:

• emitting light from a light source;
• scanning the emitted light across a field of view;
• using a first detector to detect a return light pulse corresponding to the emitted light scattered by a target located downrange and providing a first measurement signal;
• using a second detector to detect the return light pulse and provide a second measurement signal;
• using a receiver that includes a detector site location and a plurality of gain channels coupled to the detector site location, the plurality of pain channels including a superlow gain channel, a low pain channel, a medium gain channel, and a high gain channel, to generate a plurality of different measurement signals for the return light pulse;
• identifying the first measurement signal and the second measurement signal as corresponding to the same target;
• and
• combining the first measurement signal and the second measurement signal to determine a fused measurement for the target, including determining that a measurement signal provided by the high gain channel is saturated, determining a saturation-corrected measurement signal using a measurement signal provided by the superlow gain channel, and combining including the saturation-corrected measurement signal.

A system, comprising:

• a light source configured to emit light;
• a scanner configured to scan the emitted light across a field of view;
• a first detector of a receiver configured to detect a return light pulse corresponding to the emitted light scattered by an external target located downrange to provide a first measurement signal;
• a second detector of the receiver configured to detect the return light pulse to provide a second measurement signal and a third measurement signal, wherein the second measurement signal and the third measurement signal are different;
• and
• a processor configured to identify the first measurement signal, the second measurement signal, and the third measurement signal as corresponding to the same external target, determine that the third measurement signal provided by a high gain channel of a plurality of gain channels coupled to a detector site location is saturated, determine a saturation-corrected measurement signal using the first measurement signal provided by a superlow gain channel of the plurality of gain channels, and combine the first measurement signal, the second measurement signal, and the third measurement signal including the saturation-corrected measurement signal to determine a fused measurement for the external target.