| 摘要 |
A method ( 200 ) of frequency drift prediction for use by a positioning receiver ( 106 ) can include the steps of determining ( 202 ) a moving average of a frequency error, determining ( 206 ) a moving average of a frequency drift rate in a communication device, determining ( 212 ) a frequency drift rate uncertainty, and providing ( 214 ) the moving average of frequency error and frequency drift rate, and the frequency drift rate uncertainty to the positioning receiver. A point-to-point slope from the running average of the instantaneous frequency error and a running average of the point-to-point slope for a predetermined time period can be determined ( 208 & 210 ). The frequency drift uncertainty or window is determined using information determined from the moving average of the frequency drift rate. The positioning receiver can be a global positioning receiver.
|
