Implementation of Assisted GPS

Hi guys,

Is there a way to implement assisted GPS using cell technology and GPS to get faster GPS fix using Sixfab Base HAT and Quectel RC25-E. It seems that traditionally, it is taking unacceptably long time for a GPS fix. Are there other ways to shorten the GPS fix time?

Regards,
Saman

Hi @samanratna2018,

How are your antennas installed, oriented? Good sky view or anything in the way? Do you keep the Pi clock close to the correct time (network set is close enough)? Does the time to fix go down if the GPS is not completely powered off?

It sounds like you may be downloading a new GPS almanac every time you boot, or the clock is not close enough to calculate an unambiguous fix.

Exactly how long is ‘unacceptably long’?

S