Forward and Reverse Solutions

GNSS / PPP Message Log

These files display all messages generated by the processing engine. Inertial Explorer outputs a forward message log (.fml/.fsl) and a reverse message log (.rml/.rsl), depending on the processing mode (differential or PPP). Possible messages reported here are listed below.

Types of messages written to the message log files

  • Times at which ARTK was engaged and the reasons for its engagement. These messages are preceded by +++.

  • The satellite constellations (GPS/GLONASS/BeiDou/Galileo/QZSS) that will be used in processing and within ARTK

  • Any satellites with no ephemeris information.

  • The antenna types detected for the base stations and remote files

  • The GLONASS fixing receiver type mode

  • Base satellite drop outs

  • Epochs of less than 4 common satellites between the master and remote.

  • Periods of poor satellite geometry.

  • The occurrence of cycle slips. This log gives a time and record of these slips that mean problems in kinematic data.

  • Data errors that cause filter resets or the rejection of satellites. These messages are preceded by $$$.

  • Entering static and kinematic modes.

  • Events resulting from significant changes in the satellites’ geometry. These include changes in the base satellite and the rising or falling of satellites above or below the elevation mask.

  • The omission of satellites, baselines or time periods from processing.

GNSS Summary

These summary files (.fss and .rss) display some basic processing settings and the statistics for ARTK fixes and static sessions. Other items reported in this summary are listed below.

Static/ARTK summary report items

  • Final solutions for all static sessions, as well as the type of solution obtained.

  • Time and place at which ARTK engaged successfully, as well as the corresponding statistics. Such information is useful for evaluating whether or not ARTK resolved ambiguities correctly.

  • Master station coordinates, antenna summary for base and rover, and the processing mode.

  • Satellite usage information pertaining to static sessions.

  • Slope, horizontal and corrected ellipsoidal distances for all static sessions.

  • Program completion information.

IMU LC / TC Message Log (IE/IEX only)

These files display IMU messages generated by the processing engine. Inertial Explorer outputs a forward message log (.fIl/.ftl) and a reverse message log (.ril/.rtl), depending on the processing mode (Loosely Coupled or Tightly Coupled). For information on file formats see IMR File, DMR File and HMR File.