9.2.4. Data Acquisition Parameters

Try these first

1. 1.

   What does flying altitude affect in ALS?

   Hint

   Think about how high the scanner is operating.

2. 2.

   What is pulse frequency?

   Hint

   It relates to how often the scanner sends out pulses.

3. 3.

   What is the effect of flying altitude in ALS?

   • It increases scan angle
   • It affects point density
   • It decreases swath width

   Hint

   Think about how height might change the detail of the scan.

4. 4.

   True or False: A higher pulse frequency results in a denser point cloud.

   • True
   • False

   Hint

   Remember the number of pulses sent reflects density.

5. 5.

   Devise a strategy for flying altitude and swath width to map a city with varied terrains (flat areas vs. hills). Consider the impact on data quality.

   Hint

   Plan according to the landscape features.

6. 6.

   Analyze potential issues that could arise from incorrectly setting the pulse frequency in an urban environment with buildings of varied heights.

   Hint

   Balance quality and efficiency for the project.