The Gateway of Amateur Satellites for Internet Users

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The Gateway of Amateur Satellites for Internet
Users

• By Junsang, Bo, Suresh, Vinh

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Big Picture
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Software
Run tracking program and server program.
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Modem
Run tracking program and server program.
Packet translator (AD and DA converter)
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UHF/VHF Radio
Run tracking program and server program.
Packet translator (AD and DA converter)
Transceiver for sending/receiving data
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Antenna
Run tracking program and server program.
Packet translator (AD and DA converter)
Transceiver for sending/receiving data
2 meter YAGI antenna
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Rotator
Run tracking program and server program.
Packet translator (AD and DA converter)
Transceiver for sending/receiving data
2 meter YAGI antenna
Motor for tracking system.
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RS232
Run tracking program and server program.
Packet translator (AD and DA converter)
Transceiver for sending/receiving data
2 meter YAGI antenna
Motor for tracking system
RS232 Line for motor control
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User point-of-view

• All equipments will use lower power (car
  battery).
• User connect GASIU to laptop and to antenna.
• Launch tracking software. Initialize position
  and begin tracking user selected satellite (data
  given by NASA).
• Software go through self diagnostic (send/receive
  test data frame to satellite).
• Pop green GUI bubble on client laptop.

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Hardware

• Computer (preferably a laptop or something
  portable)
• 9600 bps modem (custom firmware on existing
  circuits, customized modem on FPGA)
• UHF/VHF Radio (off the shelf components)
• YAGI antenna
• Motor and controlling circuit for antenna base
  (X,Y,Z axis)
• Power supply to power all components except for
  the computer. Car battery? UPS unit?

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Software

• User interface for sending/receiving data.
• Satellite tracking software (use NASA J-track
  database).
• Motor control and self diagnostic utilities.
• Server software (http, ftp, etc.)

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Current Obstacles
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Current Obstacles

• Inexperience with satellite communication.
• Example Whether we can send data and receive our
  sent data before satellite go below the horizon.
• Response time of tracking system for acceptable
  tracking error margins.
• Noises (circuit, atmospherics, etc).

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Conclusion

• Our project can be independently implemented and
  tested.

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Conclusion

• Our project can be independently implemented and
  tested.

Tracking System
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Conclusion

• Our project can be independently implemented and
  tested.

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Finish