Science and Technology · Emerging Technologies

With reference to LiDAR (Light Detection and Ranging) technology, consider the following statements: I. It estimates distance by analysing the return of emitted laser pulses and can generate highly detailed three-dimensional surface representations. II. Its operating principle is fundamentally the same as that of Radar because both systems rely primarily on radio waves. III. In heavily vegetated areas, multiple-return data from it may be used to derive terrain information lying below the canopy. Which of the statements given above is/are correct?