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gnss protocol - Tech-dat/Network-dat/location-dat/GNSS-dat/quectel_l76-lbl26-lblc86l_gnss_protocol_specification_v2-2.pdf
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GSV - GNSS Satellites in View.
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GSA - GNSS DOP and Active Satellites. GNSS receiver operating mode, satellites used in the navigation solution reported by the GGA sentence, and DOP values.
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GLL - Geographic Position – Latitude/Longitude.
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GGA - Global Positioning System Fix Data. Time, position, and fix-related data for a GNSS receiver.
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VTG - Course Over Ground & Ground Speed.
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RMC - Recommended Minimum Specific GNSS Data. Time, date, position, course, and speed data provided by a GNSS receiver.
commands examples
Search GPS + GLONASS:
$PMTK353,1,1,0,0,0*2B
Enable GPS, Glonass, Galileo:
$PMTK353,1,1,1,0,0*2A
Sets the speed threshold for static navigation.
$PMTK386,0.4*39
$PMTK001,386,3*3D
Gets whether the GPS/GLONASS/BDS/Galileo satellite seraching is enabled or not.
$PMTK355*31
$PMTK001,355,3,1,1,0,0*33
PMTK838 PMTK_TEST_ANTI_SPOOFING - Enables or disables jamming detection function.
$PMTK838,1*2C
$PMTK001,838,3,1*2E
PMTK605 PMTK_Q_RELEASE - Queries the firmware release information. See PMTK_DT_RELEASE for the query result.
$PMTK605*31
$PMTK705,MT3333_AXN5.1.9_MODULE_STD_F1_P1,0007,Quectel-L76L,1.0*08
$PMTK705,AXN_5.1.6_3333_19010218,0007,Quectel-L76L,1.0*53