Satellite communications and the environment of space Images: NASA.

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Presentation transcript:

Satellite communications and the environment of space Images: NASA

Can you name these satellites ?

Sputnik The Hubble Space Telescope The International Space Station The first man made satellite Launched in 1957 by The USSR Mass 84kg, diameter 53cm

Now there are hundreds of satellites in orbit around the Earth while others are exploring the solar system.

Now there are hundreds of satellites in orbit around the Earth while others are exploring the solar system. Satellites are used for some familiar services. Satellite Navigation Weather forecasting TV broadcasting

Satellites operate above the Earth’s atmosphere. (Vacuum) and need to travel at high velocity to stay in orbit All of the data they collect or relay is sent back to Earth by radio communication. But…..Not all satellites are large

Satellites operate above the Earth’s atmosphere. (Vacuum) and need to travel at high velocity to stay in orbit All of the data they collect or relay is sent back to Earth by radio communication. But…..Not all satellites are large Name: FUNcube Mass : 937g Power: Solar panels and batteries Size: 10 x 10 x 10cm Orbit: Polar Altitude - 630km

The FUNcube Satellite With solar panels and communication antennas Inside the satellite, you can see some of the electronics and the battery that provides power in eclipse The sound of FUNcube’s signal from space. Sending data at 1200 bits per second The sound of Morse code. Around 10 ‘bits’ of data per second

Your task today is to investigate FUNcube and the environment of space by using graphs produced from the satellite’s telemetry. Ex1. Use the graphs provided to find the time taken for FUNcube to complete one orbit of the Earth. Then use this to calculate the velocity of the satellite Ex2. Find the maximum and minimum temperatures the satellite experiences in one orbit. Compare your results with the range of temperatures during a day here on Earth Ex3. FUNcube uses its solar panels to produce electrical energy from sunlight. Use the graphs to investigate how much power the satellite produces in sunlight and how the battery is used in eclipse.