L80 speed/distance threshold

IoT Modules GNSS Module
1

Hi,
Using a L80 device
Software release: $PMTK705,AXN_2.5_3339_15092100,0004,QUECTEL-L80,1.0*08

I try to detect small distance change and I discovered that position output is not updated if the speed is too slow.
Digging in the documentation, I found PMTK 386 that describe a bit this behavior but there is not many information about that.

Please could you develop a bit.

Are there some default values for speed and distance threshold
Thank you

2

Hi fanfanlatulipe26,

Currently L80 supports “speed threshold” only, there’s no “distance threshold” setting.

Please refer to section “2.3.28. PMTK386 PMTK_API_SET_STATIC_NAV_THD” from the Protocol Specificitaion attached.
(Default speed threshold: 0.4 m/s, by setting the threshold value to 0 this function can be disabled.)

Best regards,
Meiji
Quectel_Lx0&Lx6&LC86L&LG77L_GNSS_Protocol_Specification_V2.0.pdf (544.3 KB)

3

Thank you :wink:
(I used an older documentation “L80 GPS Protocol Specification V1.4” with less information for PMTK386)
Best regards