Please help me point out whether the antenna design is reasonable,I can't get a GPS signal this way
We connect the enable pin to the power supply to ensure that the enable end remains in a high level state.
The appendix file is the 9160 output log
taoci.logbanzai.log
It looks like you have a FW issue. Have you updated the modem FW? If not, please flash the latest FW and see if you get better results.
The version we use is mfw_nrf9160_1.3.6.zip
Hi,
Thank you for sharing this info.
If we look at the GPGSV when tracking 8, banzai.log line 428-429:
00> [00:04:36.697,326] <inf> gnss_sample: [775] $GPGSV,2,1,8,1,,,24,4,,,24,6,,,23,9,,,24,1*52 00> [00:04:36.706,420] <inf> gnss_sample: [775] $GPGSV,2,2,8,14,,,06,17,,,04,18,,,29,30,,,24,1*5A
This shows a dB/Hz of the following:
PRN#1 = 24
PRN#4 = 24
PRN#6 = 24
PRN#9 = 24
PRN#14 = 6
PRN#17 = 4
PRN#18 = 29
PRN#30 = 24
You usually want >30 dBm/Hz to be able to successfully track a satellite, and you need 4 satellites to get a fix.
Do you have a nRF9160-DK to test with?
If you place the DK in the same test bench, do you see similar behavior?
Kind regards,
Håkon
We use DK test, in the same position, you can get the positioning coordinates, it took one to two minutes.
We also tried to connect DK 9160 GPS PIN with our designed antenna to get the positioning coordinates.but it took three to four minutes.
