| 摘要 |
<p>The invention uses information gathered from a barometric pressure sensor, connected to a GNSS receiver, to choose an optimal acquisition strategy. In an example, the device of the invention includes a pressure sensor, which is sampled at low rate during power off phases, to store a pressure profile, and a processor programmed to detectthe signature of a pressurized-cabin airliner. In this way the GPS receiver can determine if the unit has been flown during an inactivity period, and estimate the durationof the flight. The advantage lies in improving the user experience by shortening the Time to First Fix after air travel.</p> |
