Patent ID: 9425652
Filing Date: 2016-08-23
CPC Classification: H02J,H03L,H04J,Y02E,Y04S

Claim Text:
1. A system for adaptive holdover time error estimation, comprising: a local time source configured to generate a local time signal; an external time source interface configured to receive an external time signal; a temperature determination subsystem configured to determine a plurality of temperature measurements in proximity to the local time source at a corresponding plurality of times; a temperature-dependent model subsystem configured to develop a temperature-dependent model based on the plurality of temperature measurements and comparison of the local time signal to the external time signal at a corresponding plurality of times; a time-dependent model subsystem configured to develop a time-dependent model based on a plurality of comparisons of the local time signal to the external time signal at a corresponding plurality of times; a holdover subsystem configured to: a communication system configured to transmit the local time signal and the estimated total maximum error to at least one receiving device.