RADAR and LIDAR Practice Exam 2025 - Free Practice Questions and Study Guide

LIDAR operates in the near-infrared to ultraviolet light frequency range, which enables it to effectively measure distances and gather data about the Earth's surface and other targets. This range is optimal for many applications due to the way light interacts with different materials. Near-infrared wavelengths, for example, are particularly useful for vegetation studies because they can penetrate leaves and provide information about plant health and density.

Additionally, ultraviolet light can be used for detecting specific materials, such as in atmospheric studies or for evaluating certain surfaces. The choice of the near-infrared to ultraviolet spectrum allows LIDAR systems to achieve high resolution and accuracy in their measurements, making it a preferred method in topographic mapping, forestry, and other remote sensing applications.

This frequency range differs significantly from radio to microwave, which is more suitable for traditional RADAR systems that operate on different principles. The visible to infrared range, while relevant, does not encompass the full capabilities and applications of LIDAR, particularly in the ultraviolet spectrum. High-frequency radio waves are not suitable for LIDAR applications as they do not provide the necessary resolution for distance measurement and surface analysis.