Exploring the World of GPS Technology
1. What is GPS and how does it work?
Choose the correct answer:
A. a system of computers that orbit the earth and transmit weather information
B. a system of satellites that orbit the planets and transmit heights from the locations of the satellites
C. a system of satellites that orbit the earth and transmit distances from the locations of the satellites to a GPS receiver
Answer
The GPS is a system of satellites that orbit the earth and transmit distances from their locations to a GPS receiver. It allows GPS receivers to calculate precise locations and provide navigation information.
GPS, which stands for Global Positioning System, is a technology that utilizes a network of satellites to provide location and time information to GPS receivers anywhere on Earth. The system works by transmitting signals from at least four satellites to a GPS receiver.
Each satellite transmits a unique signal including its location and the precise time the signal was sent. The GPS receiver collects these signals and uses the data to calculate its exact position on Earth by measuring the time it took for the signals to reach the receiver. By acquiring signals from multiple satellites, the GPS receiver can determine its three-dimensional position (latitude, longitude, and altitude), as well as calculate speed, direction, and time.
This accurate positioning capability of GPS technology has revolutionized various industries and daily activities, including navigation, mapping, surveying, agriculture, and transportation. With GPS, people can easily navigate unfamiliar places, track assets and vehicles, conduct precise surveys, and efficiently plan travel routes.