Hello,
I have a product based on nRF9160 that uses GNSS. The device is a meter, not an asset tracker, so GNSS is not the TOP 1 feature we need.
When the device is installed, its location is not meant to change for a long time. The application will trigger the GNSS only once a week to ensure the device has not moved.
I recently discovered the "minimal assistance" feature in the GNSS sample, which consists in loading the almanac in the modem.
After some research, I found some 1~2 years old posts on devZone indicating that there was plan to provide an updated almanac periodically. Has this been made already ? I couldn't find any recent info on this.
So far, the only way to get a recent almanac seems to be looking in the latest SDK releases.
Is there a document indicating how this almanac is generated ?
Depending on results I get with this assistance, I am also considering testing the A-GPS.
To ensure that I understood the principle, could you please confirm whether the following explanation is correct or not :
the A-GPS feature consist in loading an almanac (an other data ?) in the modem. This almanac is retreived from nRFCloud, and provides more accurate data that the "factory almanac method", because it is generated specifically for the device, based on it's raw location (determined by the cell ID and/or MNO). The drawback is that this accurate assistance is only valid for a short period of time.
Thanks for you help !
Vincent