What is the PPS only option on the Settings panel > GPS tab?

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Balazs Hober
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What is the PPS only option on the Settings panel > GPS tab?

Postby Balazs Hober » Mon Jul 26, 2010 1:59 pm

Question:
What is the "PPS only" option on the Settings panel > GPS tab > Fix quality filter?

Answer

A sample NMEA 0183 sentence for the GPS fix data might be as follows:

Code: Select all

$GPGGA,121505,4807.038,N,01131.324,E,1,08,0.9,133.4,M,46.9,M, , *42

Where
„ $GPGGA is the NMEA 0183 sentence ID for the GPS fix data.
„ 121505 is the fix taken at 12:15:05 UTC.
„ 4807.038,N is latitude 48° 07.038' N.
„ 01131.324,E is longitude 11° 31.324' E. 1 is the fix quality
„
The fix quality can have a value between 0 and 3, defined as follows:
• 0 = no fix
• 1 = GPS or standard positioning service (SPS) fix
• 2 = DGPS fix
• 3 = Precise positioning service (PPS) fix // this is the answer

„ 08 is the number of satellites being tracked.
„ 0.9 is the horizontal dilution of position (HDOP).
„ 133.4,M is the altitude, in meters, above mean sea level.
„ 46.9,M is the height of the geoid (mean sea level) above the WGS84 ellipsoid.
„ (empty field) is the time in seconds since the last DGPS update.
„ (empty field) is the DGPS station ID number.
„ *42 is the checksum field.
„
The NMEA 0183 version 3.0 standard adds the following additional values for the $GPGGA fix quality, which DigiTerra Explorer recognizes:
• 4 = Real-Time Kinematic (RTK) fixed solution
• 5 = Real-Time Kinematic (RTK) float solution

I hope, it will help you for understanding the Fix quality settings filter's options.

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