Monitoring based on IAC PNT tracking station data55.9°N 37.8°E Epoch
GPS constellation in view
DOP values by ≥ 5° elevation angle
GPS SVs current URE
Monitoring is implemented in real time (update every 30 sec) based on IAC PNT tracking station located in Korolev, Moscow region (55.9° N 37.8° E) The method used to identify failures in the GLONASS SVs operation is based on the URE (User Range Error) estimation –user positioning errors by space segment including environmental errors. Corrections for the ionosphere impact are calculated by the Klobuchar model, and for the troposphere impact – by the standard Saastamoinen model. HDOP - Horizontal dilution of precision PDOP - Position delusion of precision GDOP - Geometrical delusion of precision |
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