Patent ID: 8159392

Claim:
A navigation satellite receiver comprising: a crystal oscillator to generate an input clock signal at an actual frequency which drifts from a nominal frequency over an operable temperature range and within outer bounds; a temperature sensor thermally coupled with the crystal oscillator for taking temperature measurements of the crystal oscillator; a navigation platform configured to: define a frequency search window, based on first and/or second sets of frequency information, for acquiring a satellite signal having a known transmit frequency, acquire the satellite signal, receive the acquired satellite signal, and determine discrepancies between the actual frequency and nominal frequency of the input clock signal using the received satellite signal; and a processor configured to: receive said temperature measurements and said determined discrepancies, produce said first and second sets of frequency information representing outer bounds of the frequency information and indicative of discrepancies between the actual and nominal frequency of the input clock signal associated with the temperature measurements of the crystal oscillator.