LIDAR

Question 1

LIDAR

Answer 1

Technology used to create a high-resolution models of ground elevation. Uses rapid pulses of laser light to measure distances and to densely sample the surface of the earth, objects, and physical infrastructure

Question 2

FTP

Answer 2

Standard communication protocol used for the transfer of computer files from a server to a client on a computer network

Question 3

WinSCP

Answer 3

Used for file transfer between a local and a remote computer. Also offers scripting and basic file manager functionality

Question 4

Create LAS Dataset Tool

Answer 4

A geoprocessing tool that creates a LAS dataset referencing one or more .las files and optional surface constraint features

Question 5

LAS filters

Answer 5

Allows you to change the display of the data contributing to the LAS dataset. Filters change which lidar points and surface constraints are drawn

Question 6

Number of returns

Answer 6

Total number of returns for a given pulse. There are as many returns as there are reflective surfaces

Question 7

First Return

Answer 7

The most significant return and will be associated with the highest feature in the landscape like a treetop or the top of a building

Question 8

Intensity of Return

Answer 8

The return strength of the laser pulse that generated the lidar point

Question 9

DEM

Answer 9

A raster representation of a continuous surface, usually referencing the surface of the earth. Accuracy is determined by the distance between sample points

Question 10

TIN

Answer 10

A form of vector-based digital geographic and is constructed by triangulating a set of points

Question 11

LAS Point Statistics by Area Tool

Answer 11

Evaluates the statistics of LAS points that overlay the area defined by polygon features

Question 12

Extrusion

Answer 12

The process of stretching a flat, 2D shape vertically to create a 3D object in a scene