Using PPK for SLAM processing

PPK for SLAM

After confirming the input base station data and the output coordinate system (or modifying it in the settings), click 'Start' to run.

Once all progress is completed, the data processing will be finished.

View PPK report

The PPK report can reflect the quality of post-processed GNSS differentials. Click 'SLAM Processing' -> 'Report' -> 'GNSS Report' to pop up the GNSS report.

Number of satellites

Number of satellites participating in PPK processing

Float or Fixed Ambiguity Plot

Reflecting the changes in fixed and float solutions over time

DOP Plot

The DOP value, or Dilution of Precision, is an important indicator of positioning accuracy in satellite navigation systems. The DOP value reflects the impact of the geometric distribution of observed satellites relative to the receiver, and is directly proportional to positioning error. A smaller DOP value indicates a better geometric distribution of satellites and higher positioning accuracy; conversely, a larger DOP value indicates lower positioning accuracy.

There are several different types of DOP values, mainly including:

  • PDOP (Position Dilution of Precision)It reflects the indicator of positioning accuracy in three-dimensional space, which is the square root of the sum of the squares of the errors in latitude, longitude, and elevation.
  • HDOP (Horizontal Dilution of Precision): Only considers the horizontal positioning accuracy of latitude and longitude.
  • VDOP (Vertical Dilution of Precision): Only considers the vertical positioning accuracy of elevation.

The DOP value does not directly determine positioning accuracy; it is merely a contributing factor. Actual positioning accuracy is also influenced by various other factors, such as satellite signal quality, atmospheric conditions, multipath effects, etc. Therefore, when evaluating the performance of a positioning system, it is necessary to consider both the DOP value and other related factors comprehensively.

Height Profile Plot

Reflects the changes in altitude along the trajectory.

Velocity Profile Plot

During the measurement process, the velocities in the northeast and upward directions

Accuracy Statistics

Includes DOP statistics, position accuracy statistics, attitude accuracy statistics, and attitude separation statistics

If only the position (XYZ) is calculated, then only DOP statistics will be available

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