Methods and apparatus for compensating a clock bias in a GNSS receiver
AssigneeMediatek Inc.
InventorsKung-Shuan Huang, Yu-Chi Yeh
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Abstract
A method for compensating a clock bias in a Global Navigation Satellite System (GNSS) receiver includes deriving at least one clock drift value comprising a first clock drift value corresponding to a first time point, and calculating the clock bias according to the at least one clock drift value and at least one interval within the time period between the first time point and a specific time point after the first time point. An apparatus for compensating a clock bias in a GNSS receiver is also provided.
Claims16
A method for compensating a clock bias in a Global Navigation Satellite System (GNSS) receiver, the method comprising:
- deriving a first clock drift value corresponding to a first time point before a power-off period of the GNSS receiver;
- deriving at least one power off clock drift value during the power-off period of the GNSS receiver;
- and
- calculating the clock bias between the first time point and a second time point after on the power-off period of the GNSS receiver according to the first clock drift and the at least one power off clock drift value.
An apparatus for compensating a clock bias in a Global Navigation Satellite System (GNSS) receiver, the apparatus comprising:
- a clock source providing a time reference that has the clock bias to be compensated;
- and
- a processing module, coupled to the clock source, for deriving a first clock drift value corresponding to a first time point before a power-off period of the GNSS receiver;
- deriving at least one power off clock drift value during the power-off period of the GNSS receiver;
- and calculating the clock bias between the first time point and a second time point after the power-off period of the GNSS receiver according to the first clock drift and the at least one power off clock drift value.
Dependencies are inferred from the claim text.