optech_galaxy_issue_set1_1_scanline Published December 9, 2019 at 1040 × 807 in Completeness and Correctness of Discrete LiDAR Returns per Laser Pulse fired ← Previous Next → One scanline. Violet returns have violating GPS time stamps. Immediately it becomes obvious that the same GPS time stamp must have been accidentally assigned to two subsequent shots (a triple and a quadruple return).