CDMA vs GPS

GPS

• Satellites

• Worldwide

• Requires view of the sky

• 100 ns resolution

• 10µs resolution at the kernel level

• Time source are the US DoD atomic clocks

• Units are cheap

CDMA

• Mobile phone base stations

• USA, KR, CN, AU only

• Works everywhere where your mobile phone works

• Less resolution

• About the same

• Same

• Same

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