Question 1

The strength of a lidar pulse is called:&#10;A) Intensity&#10;B) Lightsquared&#10;C) Power&#10;D) Active

Accepted Answer

The strength of a lidar pulse is referred to as "intensity," which measures the return signal's strength from the target.

Question 2

Which of the following ASPRS Lidar Classification Codes indicates water?&#10;A) 3&#10;B) 5&#10;C) 7&#10;D) 9

Accepted Answer

ASPRS Lidar Classification Code 9 is used to indicate water.

Question 3

In the ASPRS Lidar Classification system, a value of &#34;12&#34; indicates which of the following?&#10;A) Overlap&#10;B) Unassigned&#10;C) Ground&#10;D) Noise

Accepted Answer

In the ASPRS Lidar Classification system, a value of "12" is designated for "Overlap" points, which are points collected in excess of the nominal point density, often occurring where flight lines overlap.

Question 4

A DSM measures:&#10;A) The &#34;bare earth&#34;' surface values of elevation&#10;B) The heights of objects on the earth's surface (such as buildings or trees)&#10;C) The heights of objects above the earth's surface (such as suspended bridges and airplanes)&#10;D) The elevation values associated with the bathymetry of lakes and water bodies

Accepted Answer

A DSM (Digital Surface Model) measures the heights of objects on the earth's surface, including buildings, trees, and other structures.

Question 5

In the ASPRS Lidar Classification system, &#34;Medium vegetation&#34; receives a value of:&#10;A) 2&#10;B) 4&#10;C) 6&#10;D) 8

Accepted Answer

Medium vegetation is assigned the value 4 in the ASPRS Lidar Classification system.

Question 6

A geodatabase feature class that can hold very large amounts of point data is:&#10;A) Point Dataset&#10;B) LAS Unlimited&#10;C) Omniverse&#10;D) Multipoint

Accepted Answer

A Multipoint feature class in a geodatabase is designed to store large amounts of point data efficiently, as it allows multiple points to be stored as a single feature.

Question 7

Lidar uses which of the following for measuring elevation values?&#10;A) Radar waves&#10;B) Laser beams&#10;C) Microwave beams&#10;D) Doppler radar and GPS

Accepted Answer

Lidar technology primarily uses laser beams to measure distances, which can then be used to create precise, three-dimensional information about the shape of the Earth and its surface characteristics.

Question 8

The standard file format for lidar data is:&#10;A) LiDAR&#10;B) LAS&#10;C) LS&#10;D) LDR

Accepted Answer

The standard file format for LiDAR data is LAS, which stands for LiDAR Aerial Survey. This format is widely used for storing the point cloud data generated by LiDAR sensors.

Question 9

Which of the following Esri data formats is often used for storing Lidar data?&#10;A) LiDAR dataset&#10;B) Terrain dataset&#10;C) Digital Elevation Model&#10;D) Light TIN

Accepted Answer

Terrain dataset is often used for storing and managing Lidar data in Esri formats, as it supports large volumes of point data and allows for efficient surface modeling and analysis.

Question 10

The first return of a lidar pulse usually indicates:&#10;A) The height of an object&#10;B) The elevation of the ground&#10;C) The surface elevation above a vertical datum&#10;D) The depth of a surface below the vertical datum

Accepted Answer

The first return of a lidar pulse usually indicates the height of an object, as it reflects off the first surface it encounters, which could be the top of a tree, building, or other feature.

Question 11

The data collected by lidar is referred to as:&#10;A) Terrain points&#10;B) Ground control points&#10;C) Point cloud&#10;D) Pulse points

Accepted Answer

The answer of The data collected by lidar is referred...

Question 12

An ArcGIS file structure used for storing, analyzing, and viewing one or more LAS files is:&#10;A) LAS Dataset&#10;B) Multi-LAS&#10;C) LAS Feature Class&#10;D) Point LAS

Accepted Answer

The answer of An ArcGIS file structure used for storing,...

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