- Android Phone for location
- Dimension 4 for exact time
But how to get this when we are in the field without an internet connection. I'm always surprised how many Android apps need an internet connection - even if their functionality doesn't really need them. And Dimension 4 will not work at all as it connects to Internet Timer Servers.
The best solution I found was describe in Using GPS Receivers to Set Computer Time for In-the-Field Logging by Gene Hinkle. It requires:
- GPS device that connects via USA (I used GlobalSat BU-353-S4 USB GPS Receiver), and
- NMEATime2 from VisualGPS
Setup of GPS device is simpl: install driver, plug in device, install and start GPSInfo program. It might take a couple of minutes until the program found enough GPS satellites to determine its location:
(It should automatically detect the right COM number)
Now, close GPSInfo and start NMEATimePanel. It will first synchronize:
... and then after a while, it will lock to the satellites:
And now it will correct the computer time. Usually it gets it down to a few milliseconds.
(It should automatically detect the right COM number)
Now, close GPSInfo and start NMEATimePanel. It will first synchronize:
... and then after a while, it will lock to the satellites:
And now it will correct the computer time. Usually it gets it down to a few milliseconds.
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