GPS/GIS Midterm Study

NOIR

Nominal, ordinal, interval, ratio

Quantitative Data

Numbers

Qualitative Data

Words or descriptions

What Does GPS Stand For?

Global Positioning System

What does GNSS Stand For?

Global Navigation Satellite System

What is the Official Name for the US’ GPS System

NAVSTAR

Name the Three Major Segments of GPS

Space, Control, User

Identify the Two Core Concepts That GPS Relies On to Calculate Position

Time differences and satellite position

How many satellites are in the GPS constellation, and how many are operational at a give time?

32 total, 24 operational, 8 spares

Explain what trilateration is

Trilateration is triangulation in 3-Dimensions. 4 or more satellites using circles to find a common point

Name two broad categories of GPS use

Navigation and data collection

Why is GPS important for people and industries today?

It provides accurate mapping and navigation for both people and industries, uses in surveying and overall data collection

What are the 5 other GNSS systems used around the world?

Galileo, GLONASS, BDS, GZSS, IRNSS or NAVIC

What kind of data specifically does GIS process?

Spatial Data

Geographic Information System

A mapping system that visualizes geographic information about features by explicitly referencing them to locations on Earth's surface

Geographic Information Science

The science underlying the practice of GIS software design and use

Typical functions of GIS software include:

Data entry, editing, data management, analysis, output

Geographic Information Systems are used to answer questions about the following:

Locations, conditions, spatial patterns, spatiotemporal trends and changes, inference

List the five uses of Geographic Information Systems:

Mapping, measurement, monitoring, modeling, management

GIS can stand for Geographic Information what and what?

System and science

Define a system

A group of activities or entities that interact with a common purpose

Name the 3 primary functions of GIS

Geovisualization, geoprocessing, geodata

Describe the basic steps for recording a waypoint on a handheld GPS unit:

Find satellites, go to the point, open mark waypoint, give it a name, icon, and description, save it

What are the two Google Earth Software?

Google earth pro and web

Explain what a placemark, path, and polygon are used for in Google Earth

Placemarks for marking specific locations. Paths for marking roads or trails. Polygons for marking areas or parcels

What is ArcGIS Field Maps and what company owns it?

ArcGIS Field Maps is a software combining five key capabilities; map viewing, map marking, data collection, asset inspection, and location tracking. Used for in the field data collection to make maps out of. It’s owned by ESRI.

What platform must you access first when using field maps?

ArcGIS Online

What is the filing convention for a Google Earth file?

A KML/KMZ file