Deck 17: How to Work With Lidar Data in Arcgis Pro

Question 1

The strength of a lidar pulse is called:

A) Intensity
B) Lightsquared
C) Power
D) Active

Answer 1

A

Question 2

Which of the following ASPRS Lidar Classification Codes indicates water?

A) 3
B) 5
C) 7
D) 9

Answer 2

D

Question 3

In the ASPRS Lidar Classification system, a value of "12" indicates which of the following?

A) Overlap
B) Unassigned
C) Ground
D) Noise

Answer 3

A

Question 4

A DSM measures:

A) The "bare earth"' surface values of elevation
B) The heights of objects on the earth's surface (such as buildings or trees)
C) The heights of objects above the earth's surface (such as suspended bridges and airplanes)
D) The elevation values associated with the bathymetry of lakes and water bodies

Question 5

In the ASPRS Lidar Classification system, "Medium vegetation" receives a value of:

A) 2
B) 4
C) 6
D) 8

Question 6

A geodatabase feature class that can hold very large amounts of point data is:

A) Point Dataset
B) LAS Unlimited
C) Omniverse
D) Multipoint

Question 7

Lidar uses which of the following for measuring elevation values?

A) Radar waves
B) Laser beams
C) Microwave beams
D) Doppler radar and GPS

Question 8

The standard file format for lidar data is:

A) LiDAR
B) LAS
C) LS
D) LDR

Question 9

Which of the following Esri data formats is often used for storing Lidar data?

A) LiDAR dataset
B) Terrain dataset
C) Digital Elevation Model
D) Light TIN

Question 10

The first return of a lidar pulse usually indicates:

A) The height of an object
B) The elevation of the ground
C) The surface elevation above a vertical datum
D) The depth of a surface below the vertical datum

Question 11

The data collected by lidar is referred to as:

A) Terrain points
B) Ground control points
C) Point cloud
D) Pulse points

Question 12

An ArcGIS file structure used for storing, analyzing, and viewing one or more LAS files is:

A) LAS Dataset
B) Multi-LAS
C) LAS Feature Class
D) Point LAS