THINGY:91 GPS position more precisely?

[Hoang]

Dear, 

I am working with thingy:91, v1.0.0, and running asset_tracker, I got fix location from GPS, but I am not so happy with these positions from thingy:91, sometimes the accuracy: +/- 100m. I tried to put it far away from the buildings, but it improved not much. 

Can we change in the setting: 

# GPS
CONFIG_NRF9160_GPS_LOG_LEVEL_DBG=y
CONFIG_NRF9160_GPS=y
CONFIG_NRF9160_GPS_LOG_LEVEL_DBG=y
CONFIG_GPS_USE_EXTERNAL=y
CONFIG_GPS_DEV_NAME="NRF9160_GPS"

CONFIG_GPS_CONTROL_FIRST_FIX_CHECK_DELAY=10
CONFIG_GPS_CONTROL_FIX_CHECK_INTERVAL=30
CONFIG_GPS_CONTROL_FIX_TRY_TIME=360
CONFIG_GPS_CONTROL_PSM_DISABLE_ON_STOP=n

to get better accuracy? 

Thanks , 

BR, 

Hoang Nguyen

[MJD093]

From the settings you listed, they don't appear to have any affect of the quality of the fix.

The settings above are to check for a fix. If the Thingy:91 believes it has a fix (NMEA flag as valid), it will output the fix co-ordinates and presumably set a check flag to true.

The settings therefore do only this. Set up a 360 second attempt window for getting a GPS fix. Check for a fix every 30 seconds during the attempt window with a 10 second delay from the start of the attempt window.

[Hoang]

Thanks so much MJD093

Ja, I understood them, but do we have more options to set it more precisely?

BR, 

Hoang Nguyen

[Didrik Rokhaug]

Hi.

Sadly, to the best of my knowledge, it is not possible to increase the accuracy of the GPS in software.

Best regards,

Didrik

[Hoang]

Thanks so much, Didrik Rokhaug

External antenna, it maybe is the solution for me

BR, 

Hoang Nguyen