GNSS Capability

8 thoughts on “GNSS Capability

  1. I need to know how to differentiate between the position reading when I’m using GPS only and with GNSS capability enabled?
    There’s nothing tells me that, and when I checked the part of satellites number, it’s almost the same, also when I enable the GLONASS how much time it needs to say that the GNSS engine is already synchronized?

    Work Procedures:
    1. AT$GPSP=1
    2. AT$GPSACP
    3. Then try with GNSS –> AT$GPSGLO=1
    4. I wait around 1 minute to make sure it works
    5. AT$GPSACP
    6. And check if there’s something changed in the Lat & Long reading

    Please advise regarding GNSS capability

    1. Hello Ahmed ,

       

      what HE910 module are you using?

      Are you using an external GNSS module? If yes, which one?

       

      The AT$GPSGLO command does not exist.

      Also, the HE910-G, which is the only one with a GPS integrated, supports GPS only, not GNSS. 

       

      From now on, your support requests will be handled directly by the technical support system. So please, add ts-emea@telit.com in copy in your next email. Thank you.

       

       

      Kind regards,

      Federica Cara          

      Technical Support – EMEA Application Engineering
      Telit Communications S.p.A.

    1. Hello Ahmed,

      The AT$GPSACP command gives information about the GPS position only.

      Also, GNSS capability is always enabled and GLONASS cannot be disabled via AT command.

       

      Can you add your email address in your next email, please?

       

      Kind regards,

      Federica Cara

      Technical Support – EMEA Application Engineering
      Telit Communications S.p.A.

  2. If the AT$GPSACP gives the GPS data only, how can I get the GNSS data? And how can know how many satillites are connected in GPS and GLONASS? As the AT$GPSACP gives me almost the same number while AT$GPSGLO=0 or AT$GPSGLO=1

    1. Hello Ahmed,

       

      The LE910-EUG and LE910-NAG have GNSS module integrated, so they support the AT$GPSGLO command. GLONASS capability is enabled by default in the module (GPSGLO: 1), but you need to activate the streaming of GLONASS data through the command AT$GPSNMUNEX. Once activated, you will see the NMEA sentences with talker ID GL and GN, other than GP.

      Refer to the AT command user guide attached. You will find the explanation for all the GPS commands.

      About the position given by the receiver, it is actually calculated using both the constellations. The GSA sentences give information about the satellites used in solution. When GLONASS is enabled, you will see two GNGSA sentences. The first one is referred to the GPS satellites and the second one to the GLONASS satellites. You can also identify them based on the satellite ID number: 01-32 for GPS and 65-96 for GLONASS. Also, the GSV sentences give information about satellites in view. In this case, you can identify which constellation the data is referred to by the talker ID (GPGSV and GLGSV).

       

      Can you tell me the FW version in the LE910-EUG? It is the response to command AT+CGRM.

      From now on, we will handle your support request directly from the support system. Please, add always ts-emea@telit.com in cc in the emails. Thank you.

       

      Kind regards,

      Federica Cara

    2. Hello Ahmed,

       

      The LE910-EUG and LE910-NAG have GNSS module integrated, so they support the AT$GPSGLO command. GLONASS capability is enabled by default in the module (GPSGLO: 1), but you need to activate the streaming of GLONASS data through the command AT$GPSNMUNEX. Once activated, you will see the NMEA sentences with talker ID GL and GN, other than GP.

      Refer to the AT command user guide attached. You will find the explanation for all the GPS commands.

      About the position given by the receiver, it is actually calculated using both the constellations. The GSA sentences give information about the satellites used in solution. When GLONASS is enabled, you will see two GNGSA sentences. The first one is referred to the GPS satellites and the second one to the GLONASS satellites. You can also identify them based on the satellite ID number: 01-32 for GPS and 65-96 for GLONASS. Also, the GSV sentences give information about satellites in view. In this case, you can identify which constellation the data is referred to by the talker ID (GPGSV and GLGSV).

       

      Can you tell me the FW version in the LE910-EUG? It is the response to command AT+CGRM.

       

      From now on, we will handle your support request directly from the support system. Please, add always ts-emea@telit.com in cc in the emails. Thank you.

       

      Kind regards,

      Federica Cara

      Technical Support – EMEA Application Engineering

      Telit Communications S.p.A.