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→HDOP/PDOP value calculation changes
|[[File:Alert.png|left|link=|50px]]||<b>From firmware version 03.27.05.Rev.00 HDOP/PDOP value calculation has been reworked. DOP values are calculated according to constellations that are currently in use. Example: If we have 4 GNSS systems and there will be two in use then average will be calculated from two GNSS systems.</b>
|[[File:Alert.png|left|link=|50px]]||<b>From firmware version 03.27.05.Rev.00 HDOP/PDOP value calculation has been reworked. DOP values are calculated according to constellations that are currently in use. Example: If we have 4 GNSS systems and there will be two in use then average will be calculated from two GNSS systems.</b>
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Main calculations of separate HDOP/PDOP values of GPS, GLONASS, Galileo and BeiDou are made by GNSS modem. Modem calculates these values, FMB device calculates average HDOP/PDOP from these 4 GNSS systems with a formula below.
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Calculation formula - ("GPS" + "GLONASS" + "Galileo (0-sat)" + "BeiDou (0-sat)") / 2 (four GNSS systems)**<BR>
Calculation formula - ("GPS" + "GLONASS" + "Galileo (0-sat)" + "BeiDou (0-sat)") / 2 (four GNSS systems)**<BR>
Calculation formula - ("GPS" + "GLONASS") / 2 (two GNSS systems)<BR>
Calculation formula - ("GPS" + "GLONASS") / 2 (two GNSS systems)<BR>
HDOP/PDOP will be different if it will have 19 and i.e. other packet with 6 satellites. DOP values are calculated and provided by GNSS modem. In parsed example below all of 19 satellites are shown as in use.
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Parsed NMEA Record Example:<BR>
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Record GPS longitude : -14116383<BR>
Record GPS latitude : 530738950<BR>
Record GPS altitude : 356<BR>
Record GPS angle : 357<BR>
Record GPS satellites: 19<BR>
Record GPS Kmh : 102<BR>
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