Week 11 - Geodesy and Cartography - From the History of GPS

What was the original purpose of GPS in the 1960s?

• To help farmers in Kazakhstan improve agricultural planning

• To make maps for schools and improve geography education

• To track locations for the military

• To guide tourists in cities and help them find attractions easily

When did GPS become fully operational with 24 satellites?

• • 1978

• • 1983

• • 1995

• • 2000

Why did GPS become more accurate for civilians in 2000?

• More satellites were launched to improve global coverage

• Selective Availability was turned off, allowing precise positioning

• New receivers were invented with better signal processing capabilities

• The Cold War ended, leading to advancements in navigation technology

How does GPS help in Kyzylorda, Kazakhstan?

• It maps tall buildings to create detailed urban development plans

• It plans new highways to improve transportation networks

• It finds routes after floods to assist in emergency response efforts

• It plans new highways to improve transportation networks

What is a challenge of using GPS in Almaty?

• It doesn’t work in rural areas, making navigation difficult

• It is too slow for big projects that require real-time data

• It doesn’t use satellites, limiting its functionality in the city

• It needs a clear view of the sky to receive accurate signals

Match the term to its definition

• • Selective Availability

• • A system using satellites to find locations

• • Trilateration

• • A method to find a position using satellites

• • Navstar

• • The first GPS satellite launched in 1978

• • GPS

• • A system adding errors to GPS signals

Match the year to the GPS event

• • 1978

• • First GPS satellite launched

• • 2000

• • Selective Availability turned off

• • 1983

• • GPS fully operational

• • 1995

• • Civilians allowed to use GPS

Match the location in Kazakhstan to how GPS is used there

• • Marks land boundaries for farmers

• • Astana

• • Maps roads for city planning

• • Kyzylorda

• • Finds safe routes after floods

• • Shymkent

• • Plans new highways

• • Atyrau

Match the GPS part to its role

• • A radio wave from a satellite

• • Orbit

• • The path a satellite follows

• • Receiver

• • Gets signals to find a location

• • Signal

• • Sends signals from space

• • Satellite

10. Put these steps in order to find a location using GPS

• 1. User reads the location on the device

• 1. Receiver calculates the position

• 1. Satellites send signals to the receiver

• 1. Receiver measures signal time from four satellites