Week 12 - Geodesy and Cartography - Surveying with GPS

What does GPS use to find exact locations during surveying?

• • Theodolites and tapes

• • Computers and maps

• • Satellites and receivers

• • Cameras and drones

What is the purpose of a control point in GPS surveying?

• • To store digital data

• • To ensure accuracy at the start

• • To connect to satellites

• • To measure angles manually

How does GPS help surveyors in rural Africa?

• • It plans new highways

• • It maps tall buildings

• • It finds routes after floods

• • It marks land boundaries for farming

What makes GPS surveying faster than using a theodolite?

• • It doesn’t need a tripod

• • It measures angles by hand

• • It works without satellites

• • It collects data automatically

Why might GPS not work well in a South American mountainous area?

• • It needs a clear view of the sky

• • It is too expensive

• It doesn’t use software

• • It takes too long to set up

Match the GPS surveying tool to its role

• • Tripod

• • Stores information during surveying

• • GPS Receiver

• • Analyzes data to create maps

• • Data Collector

• • Keeps the receiver steady

• • Software

• • Calculates position from satellite signals

Match the location to how GPS is used there

• • Asia

• • Maps fields for agriculture

• • South America

• • Marks land boundaries for farming

• • Europe

• • Faces signal issues in cities

• • Rural Africa

• • Plans roads in urban areas

Match the term to its definition

• • RTK

• • Collecting data from one point

• • Static Surveying

• • Numbers showing a location

• • Trilateration

• • Technique for instant error correction

• • Coordinates

• • Method to find a position using satellites

6. Match the challenge to its cause in GPS surveying

• • Expensive receivers and software

• • Weak Signals

• • Tall buildings or dense forests

• • Errors

• • Heavy rain or snow

• • Signal Blockage

• • Lack of training

• • High Cost

10. Put these steps in order to survey with GPS

• 1. Connect to at least four satellites

• 1. Set up the receiver on a tripod

• 1. Transfer data to a computer

• 1. Record the position of the point