GPS Accuracy and Functionality

The lecture by Gaurav Gauri covers the Global Positioning System (GPS), detailing its history, components, and functionality. It explains the development of GPS by the US Department of Defense, its operational structure with satellites, and the three main segments: space, control, and user. The lecture also describes how GPS calculates location using geometric principles and trilateration, and discusses the accuracy and applications of GPS technology.

Who were the key figures credited with the invention of GPS?

• Albert Einstein and Isaac Newton

• Bradford Parkinson, Roger L. Eston, and Ivan A. Getting

• Thomas Edison and Nikola Tesla

• Galileo Galilei and Johannes Kepler

What does GPS stand for?

• Global Positioning System

• Geographical Positioning Satellite

• Global Placement System

• Geographical Placement Satellite

How many satellites make up the GPS constellation?

• 12

• 50

• 24

• 30+

Which segment of GPS is responsible for the management of remote monitoring and transmission?

• Satellite Segment

• Control Segment

• User Segment

• Space Segment

What is the primary function of the GPS space segment?

• To display user location

• To control satellite orbits

• To provide location and time information

• To monitor satellite health

What principle is used to determine a location using GPS?

• Bisection

• Triangulation

• Geometric Principle

• Trilateration

How many satellites are required to determine an exact location using GPS?

• Two

• Three

• Five

• Four

What is the worst-case accuracy of GPS signals in space?

• 5 meters

• 7.8 meters

• 10 meters

• 12 meters

What is the accuracy of GPS time?

• 10 nanoseconds

• 20 nanoseconds

• 30 nanoseconds

• 40 nanoseconds

Which factor is NOT crucial for the accuracy of GPS positioning?

• Color of the satellite

• Time delay for the signal

• Current time

• Position of the satellites