Methods and apparatus for increased precision and improved range in a multiple detector lidar array

摘要: Methods, systems, and computer program products for acquiring three-dimensional LiDAR information of a scene are disclosed. According to one aspect, three- dimensional includes emitting N pulses in sequence with each successive pulse having relative time shift the sampling reference, thus producing reconstructed sampled signal an effective rate times reference. another two or more frequencies, differences pair differing frequencies being designated as Δf, return use Frequency analysis is performed on determine reference at which Δf signals occur intensity time. Systems described herein can be utilized autonomous vehicle navigation, collision avoidance navigation systems UAVs, roadway surface texture analysis, non-contact friction in- motion deflectometer measurement.