GPS知识讲座(17)

三种启动方式对比Hot Start (TTFF 2.5 sec)

Cold Start

Warm Start

(TTFF 41 sec) (TTFF 33 sec) Ephemeris < 2hrs old.Almanac < 6 mths old. Position within 0.5 degrees.

Not Available

Not Available

Required

Not Available

Required

Required

Not Available

Required

Required

Time within a few seconds of UTC

Not Available

Required

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