LiDAR Technology and Its Applications

LiDAR technology operates similarly to radar by sending out millions of laser points to scan the ground. It measures the time taken for these points to penetrate through obstacles, hit the ground, and return. This data is then mapped to create a digital outline of the land's surface. LiDAR can reveal hidden structures and subtle ground indentations, allowing for the reconstruction of ancient cities like Angkor Wat, showing its vast surrounding metropolis as it appeared over 900 years ago.

What is the primary function of LiDAR technology?

• To capture sound waves

• To send out radio waves

• To emit laser points and analyze reflections

• To measure temperature changes

How does LiDAR data help in understanding the surface of the land?

• By measuring air pressure

• By capturing sound waves

• By providing temperature maps

• By creating a digital outline of the surface

What additional information does LiDAR reveal about the ground?

• The color of the soil

• The sound of the environment

• Subtle indentations and shapes

• The temperature of the surface

What historical site is mentioned as being reconstructed using LiDAR data?

• The Great Wall of China

• Machu Picchu

• The Pyramids of Giza

• The city surrounding Angkor Wat

How old is the city surrounding Angkor Wat as revealed by LiDAR data?

• 100 years

• 2000 years

• 900 years

• 500 years