The GPS satellites are about 20,000 kilometres above the Earth.
The atomic clocks tell the time to an accuracy of one second in 300,000 years.
The satnav is usually accurate to 20 metres anywhere in the world.
Walk across Trafalgar Square.
A satellite is an artificial object in space.
Atomic clocks are very accurate.
He carried on driving until his taxi got stuck in the mud.
den Bus/Zug erwischen
Did you have to catch a bus to school?
A man who followed satnav directions drove off a cliff.
I gave the tourist directions to the hotel.
A man using a satnav found himself on the edge of a cliff.
Drivers sometimes get lost and end up in the wrong street.
The GPS satellites have clocks which tell the exact time.
Explain why you think your item is essential.
His taxi got stuck in the mud.
There are more than 20 satellites in the Global Positioning System (GPS).
Turn left into Southampton Street.
The satnav told me to keep going.
Walk past the museum and it's on your right.
A satnav can calculate its position from one satellite's signals.
Early explorers sailed round the world.
How many stops are there on bus route 7?
Satellites control many aspects of modern life.
Drivers can use satnavs to tell them their route.
The satnav works out where it is several times a second.
Walk through the market and turn left into Southampton Street.
nach links/rechts abbiegen
Turn left outside the school and walk to the bus stop. / When you come out the underground, turn right.
Walk up the hill from the city centre.
The satnav user needs to give it accurate information.
How do satnavs work out their position?
Du kannst es nicht verpassen!
It's a big building on the left. You can't miss it!