GLOBAL POSITIONING

GPS

• 18 NGSO SATELLITES AT 20,000 km

• 20 MHz SPREAD SPECTRUM SIGNAL (BPSK MODULATION)

• POSITION TO +/- 10 m IN 3 DIMENSIONS

• TIME/FREQUENCY STANDARD

  • TIME TO ~340 NANOSECONDS
  • FREQUENCY TO 10-14 WITH ATOMIC CLOCK

• AVAILABLE ON A WRISTWATCH ($500)

• 2000 GLOBAL MARKET OF $8 BILLION

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