9.2. Airborne Laser Scanning (ALS)

Try these first

1. 1.

   What does ALS stand for?

   Hint

   Think about the technology and data collection method.

2. 2.

   Name one component of ALS.

   Hint

   Consider what devices are needed for scanning.

3. 3.

   What technology does ALS use for data collection?

   • Radar
   • LiDAR
   • Ultrasound

   Hint

   Consider the full name of LiDAR.

4. 4.

   True or False: ALS is only effective in clear weather.

   • True
   • False

   Hint

   Think about the impact of rain or fog.

5. 5.

   Evaluate the effectiveness of ALS in urban environments where buildings obstruct the laser signals.

   Hint

   Consider alternatives or solutions that might improve data collection.

6. 6.

   Discuss how variations in pulse frequency and flying altitude could impact an ALS project aimed at mapping a dense forest.

   Hint

   What is the relationship between altitude and data resolution?