| 摘要 |
<p>A method for self-calibration of frequency offsets in a measurement equipment of an interference monitoring system, comprises the steps of:
a) sampling I/Q data by using the interference monitoring system measurement equipment;
b) acquiring navigation signals from said I/Q data;
c) estimating the satellite signal's carrier frequency;
d) calculating an expected satellite signal's carrier frequency;
e) comparing the expected satellite signal's carrier frequency with the estimated satellite signal's carrier frequency and calculating a frequency offset value as the difference between said two frequencies;
f) storing said frequency offset value in a memory; and
g) using said stored frequency offset value to compensate the frequency offset of at least one measurement in the future.</p> |
