| 摘要 |
PURPOSE: A high accuracy frequency oscillator correcting method and a system thereof are provided to improve the stability and reliability of a high accuracy frequency oscillator with low costs by using the calculation algorithm of a frequency inaccuracy measuring module. CONSTITUTION: A first frequency, which is outputted from a frequency oscillator, is measured(S510). A GPS signal is received from a GPS receiver. A reference frequency, which is a second frequency, is generated through a digital phase-locked loop filter(S520). A time interval counter extracts a frequency deviation by comparing the first frequency with the second frequency(S530). A digital platform determines the error range of the extracted frequency deviation by using the first frequency and the second frequency(S540). Correction data is generated(S550). A first frequency reflecting correction data is generated(S560). Frequency data is saved in a flash memory(S570). |
