User's Manual

www.looket.com
User Guide Manual - 5
- Fix initial GPS with a full charged battery. I t will take longer
than before with a low battery.
- The Looket device is supporting a SiRFInstantFixI I
technology, so it is able to receive signal more quickly from
GPS satellites and indicate a current location on the map
without waiting for long time.
- I f there is no saved GPS satellites information or the saved
information is not enough, the SiRFI nstantFixI I function
would not be working normally. Also when receiving GPS
signal at f irst, the location error can be happened depending
on operating circumstances. Moreover, in case of not using
the device for over 3 days, the SiRFI nstantFixI I function
would not be operated.
※ SiRFI nstantFixI I technology
I t can reduce warm starts, the typical PND start-up mode,
from over half a minute to as little as five seconds, and in
urban canyons the difference can be even more signif icant.
It does this while demonstrating excellent positional
accuracy, an important attribute for navigation devices. I t
accomplishes this using sophisticated, patent-pending
algorithms that enable the PND to model the behavior of
visible GPS satellites during the day and predict their
position in the sky for up to three days in the future. I t
continuously ref ines its calculations based on the latest data
it receives from the satellites being tracked every time the
PND is used. I t performs these calculations completely
autonomously, without ever needing updates of any kind
from a network.