Final answer:
A LiDAR remote sensing system consists of a laser, scanner and optics, and receiver and electronics. Together, these components measure distances and create high-resolution maps of Earth's surface.
Step-by-step explanation:
The three key components used in a LiDAR remote sensing system are:
- Laser - This is the source of the light sent out to the target. By measuring the time it takes for the light to return, the distance to the target can be calculated.
- Scanner and Optics - After the laser sends out a light pulse, these components direct the light to the target and collect the reflected light.
- Receiver and Electronics - Once the light is reflected back, this component detects the return signal. The electronics process these signals to create the final data output.
Each component plays a crucial role in how LiDAR technology creates high-resolution maps of the Earth's topography, including vegetation and sediment changes.