Adaptive holdover timing error estimation and correction

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:
• detect a loss of reception of the external time signal during a holdover period;
• estimate a maximum time-dependent error based on the time-dependent model and a duration of the holdover period;
• estimate a maximum temperature-dependent error based on the temperature-dependent model;
• determine an estimated total maximum error based on the estimated maximum time-dependent error and the estimated maximum temperature-dependent error;
• and
• a communication system configured to transmit the local time signal and the estimated total maximum error to at least one receiving device.